Medicare Enrolled

Dr. Alan Keister, M.D.

Internal Medicine · Amarillo, TX
Practice pattern: Clinical Cardiology — Primarily office-based clinical cardiology
9092 WESTGATE PKWY W, Amarillo, TX 79124
8063559741
Registered in NPPES since 2006
NPI: 1255373635 verify on NPPES ↗
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating. This page presents federal public records about Dr. Keister from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
Are you Dr. Keister? Request a correction or review of any data shown here. Provider portal →

What this data tells you about Dr. Keister

Dr. Alan Keister is an internal medicine specialist in Amarillo, TX, with 20 years of NPI registration. Based on federal Medicare data, Dr. Keister performed 31,969 Medicare services in 2023. These records do not provide a deduplicated patient total.

Between the years covered by Open Payments, Dr. Keister received a total of $6,138 from 37 pharmaceutical and/or device companies across 436 payment records. A record can group multiple payments. These transfers are publicly reported through CMS Open Payments. Disclosure alone does not establish their effect on care. A reliable breakdown by payment category is not available in this snapshot. Patients may wish to discuss these relationships with their provider.

The Data Coverage level for Dr. Keister is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.

✓ 20 years of NPI registration ▲ Top 1% volume in TX $6,138 industry payments

Medicare Practice Summary — 2023

Medicare Utilization ↗
31,969
Medicare services
Top 1% in TX for internal medicine
Not available
Unique patients (not deduplicated)
$21
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →

Top procedures by volume

Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.

Procedure Volume Avg. paid Avg. submitted
Testosterone injection
An injection of testosterone cypionate, a form of testosterone hormone. The dose is measured in milligrams.
7,700 $0 $0
Blood draw (venipuncture)
Insertion of a needle into a vein to collect a blood sample.
2,093 $5 $6
Comprehensive metabolic blood panel
A blood test that measures a group of chemicals, including glucose, electrolytes, and kidney and liver function markers.
2,008 $10 $14
Complete blood count (CBC) with differential
An automated laboratory test that measures the levels of red blood cells, white blood cells, and platelets in the blood, including a breakdown of the different types of white blood cells.
1,931 $8 $11
Chronic care management, first 20 min/month
This service covers the first 20 minutes of clinical staff time directed by a healthcare professional each calendar month to manage chronic conditions.
1,839 $46 $63
Office visit, established patient (30-39 min)
A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition.
1,574 $85 $138
Office visit, established patient (20-29 min)
An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition.
1,540 $62 $94
Urinalysis with microscopic exam
A urine test performed manually that includes examining the sample under a microscope to check for abnormalities.
1,277 $3 $5
Lipid panel (cholesterol and triglycerides)
A blood test that measures cholesterol and triglyceride levels.
1,251 $13 $19
LDL cholesterol level test
A blood test that measures the amount of low-density lipoprotein (LDL) cholesterol in your blood. LDL is often referred to as "bad" cholesterol.
1,239 $10 $13
Steroid injection (triamcinolone)
A 10 mg injection of triamcinolone acetonide, a corticosteroid medication. This code specifies the drug and dosage administered.
1,142 $1 $25
Thyroid stimulating hormone (TSH) test
A blood test that measures the level of thyroid stimulating hormone to evaluate thyroid function.
1,094 $16 $24
Annual wellness visit, follow-up
A follow-up annual wellness visit that includes a personalized prevention plan of service.
705 $112 $115
Hemoglobin A1c test (diabetes monitoring)
A blood test that measures your average blood sugar levels over the past two to three months.
641 $9 $14
Ceftriaxone antibiotic injection
This code represents the administration of ceftriaxone sodium, an antibiotic medication. The charge is calculated for every 250 mg of the drug administered.
540 $0 $25
Vitamin D level test
A blood test to measure the amount of Vitamin D-3 in your body.
463 $29 $38
Free thyroxine (T4) test
A blood test that measures the level of free thyroxine, a thyroid hormone, in the bloodstream.
416 $9 $13
Cardiac enzyme level (CK-MB) test
A blood test that measures the total level of creatine kinase, specifically the cardiac enzyme fraction, to help evaluate heart muscle damage.
329 $6 $18
Vitamin B-12 level test
A blood test that measures the amount of vitamin B-12 in your body.
318 $15 $22
Flu vaccine administration
This procedure involves the administration of the influenza virus vaccine. It covers the process of delivering the vaccine to the patient.
303 $24 $25
Flu vaccine, high-dose
High-dose seasonal influenza vaccine for adults aged 65 and older. Contains four times the antigen of standard-dose flu vaccines (60 mcg per strain), split-virus formulation, preservative-free, single-dose syringe.
247 $68 $71
PSA test (prostate cancer screening)
A blood test that measures the level of prostate-specific antigen to screen for prostate cancer.
234 $19 $69
Chronic care management, additional 20 min/month
This service covers an extra 20 minutes of clinical staff time directed by a healthcare professional for managing two or more chronic conditions each calendar month.
196 $35 $49
Chest X-ray, 2 views
An X-ray imaging test of the chest that captures two different angles to visualize the lungs, heart, and chest wall.
155 $15 $27
Drug injection, under skin or into muscle
A procedure involving the administration of a medication or substance via injection into the subcutaneous tissue or muscle.
133 $10 $17
Basic metabolic blood panel
A blood test that measures a group of basic chemicals, including total calcium levels.
130 $8 $14
Electrocardiogram (EKG), 12-lead
A standard heart rhythm test using at least 12 leads to record electrical activity. A healthcare provider interprets the results and provides a written report.
130 $9 $17
Uric acid level test
A blood test that measures the level of uric acid in your body. Uric acid is a waste product formed when the body breaks down purines.
122 $4 $6
Pneumonia vaccine administration
This procedure involves the injection of a vaccine to protect against pneumococcal disease. It is administered by a healthcare provider.
104 $29 $30
Pneumococcal conjugate vaccine (PCV20)
An intramuscular injection of the 20-valent pneumococcal conjugate vaccine. It is used to protect against diseases caused by Streptococcus pneumoniae bacteria.
92 $280 $450
Respiratory virus detection test
A laboratory test using immunoassay techniques to detect the presence of severe acute respiratory syndrome coronavirus and influenza viruses.
90 $64 $100
Ketorolac injection, per 15 mg
An injection of ketorolac tromethamine, a nonsteroidal anti-inflammatory drug, administered in doses measured per 15 mg.
90 $0 $17
Strep A nucleic acid amplification test
A laboratory test that uses nucleic acid amplification to detect the presence of Group A Streptococcus bacteria. This method identifies the genetic material of the bacteria to determine if an infection is present.
82 $34 $47
Prothrombin time test (blood clotting)
A laboratory test that measures how long it takes for blood to clot. This procedure evaluates the body's coagulation process.
74 $4 $21
Ferritin level test (iron stores)
A blood test that measures the level of ferritin, a protein that stores iron in the body.
72 $13 $53
Iron level test 72 $6 $28
Respiratory virus nucleic acid test, 3-5 targets
A laboratory test that uses nucleic acid detection to identify multiple types or subtypes of respiratory viruses. The test analyzes 3 to 5 specific viral targets.
67 $140 $151
Total testosterone level test
A blood test that measures the total amount of testosterone in your body. This hormone is important for various bodily functions in both men and women.
62 $25 $39
Bone density scan (DEXA)
A test that uses low-dose X-rays to measure bone mineral density in the hip, pelvis, and spine. It helps assess bone strength and risk of fractures.
61 $35 $52
Iron binding capacity test
A blood test that measures the amount of iron in the blood and the blood's ability to bind and transport iron.
59 $8 $15
High-sensitivity C-reactive protein test
A blood test that measures high-sensitivity C-reactive protein to detect infection or inflammation.
56 $13 $17
X-ray of lower and sacral spine, 2-3 views
An X-ray imaging test that captures 2 to 3 views of the lower back and sacral spine to visualize the bones and joints in this area.
55 $20 $34
Natriuretic peptide level test
A blood test that measures the level of natriuretic peptide, a protein produced by the heart and blood vessels.
55 $37 $89
Ear wax removal by washing
This procedure involves the removal of impacted ear wax using a washing technique.
50 $10 $19
Liver function blood test panel 50 $7 $28
Annual depression screening 49 $17 $18
Shoulder X-ray, 2+ views
An X-ray imaging test of the shoulder joint using at least two different angles to visualize the bones and surrounding structures.
46 $16 $29
Urine microalbumin test
A laboratory test that measures the amount of a specific protein called microalbumin in a urine sample. This analysis helps assess kidney function.
41 $6 $6
Transitional care management, high complexity
Coordination of care for a patient transitioning from a short-term hospital stay or other facility to home or another care setting. This service addresses a high-complexity medical problem.
41 $184 $245
Free T3 thyroid hormone test
A blood test that measures the level of free triiodothyronine (T3) hormone in your body. This helps assess how well your thyroid gland is functioning.
40 $17 $24
Knee X-ray, 1-2 views
An X-ray imaging test of the knee joint using one to two different angles to visualize the bones and surrounding structures.
38 $16 $29
Home health plan of care certification
Certification by a physician or allowed practitioner for Medicare-covered home health services under a home health plan of care. This includes contacting the home health agency and reviewing reports of patient status required by physicians.
36 $38 $52
Sed rate test (inflammation marker)
This automated test measures how quickly red blood cells settle in a tube to detect inflammation in the body.
33 $3 $4
COVID-19 vaccine administration
Administration of a single dose of the coronavirus vaccine.
33 $39 $45
Home health plan of care re-certification
A physician reviews the patient's status and contacts the home health agency to re-certify the plan of care without the patient being present.
33 $30 $40
Initial preventive physical examination, new Medicare beneficiary
A comprehensive preventive health visit for new Medicare beneficiaries during their first 12 months of enrollment. The service is conducted as a face-to-face visit and is limited to preventive care.
33 $158 $170
X-ray of upper spine, 2-3 views
An X-ray imaging test of the upper spine using two to three different angles to visualize the bones and structures.
32 $19 $30
X-ray of foot, 2 views
An X-ray imaging test of the foot using two different angles to create pictures of the bones and joints.
32 $13 $19
COVID-19 vaccine (Moderna bivalent)
An intramuscular injection of the SARS-CoV-2 vaccine containing 50 micrograms in a 0.5 mL dose.
32 $143 $150
PSA test (prostate cancer screening) 31 $17 $26
Annual wellness visit, initial visit
A yearly appointment to review your health and create a personalized prevention plan. This initial visit focuses on preventive care and health assessment.
30 $158 $176
X-ray of hand, 2 views
An X-ray imaging test of the hand using two different angles to visualize the bones and joints.
27 $16 $25
Magnesium level test
A blood test to measure the amount of magnesium in your body. This helps check for magnesium deficiency or excess.
26 $7 $20
Hip X-ray, 2-3 views
An X-ray imaging test of the hip joint using two to three different angles to visualize the bones and surrounding structures.
25 $25 $37
Direct bilirubin level test
A blood test that measures the amount of direct bilirubin in your body. Direct bilirubin is the form of the waste product processed by the liver.
25 $5 $7
Transitional care management services, moderate complexity
Services provided to coordinate care during the transition from an inpatient or other facility setting back to the community. This includes follow-up and management of a health problem of at least moderate complexity.
24 $140 $187
X-ray of middle spine, 2 views
An X-ray imaging test that produces two views of the middle section of the spine to visualize the bones and joints.
21 $14 $24
Autoimmune disorder screening test
A laboratory test used to screen for the presence of autoimmune disorders.
21 $12 $18
Influenza vaccine, quadrivalent, 0.5 ml dosage 21 $20 $33
Rib X-ray, 2 views
An X-ray imaging test of the ribs on one side of the body using two different angles.
19 $16 $28
Pelvis X-ray, 1-2 views
An X-ray imaging test of the pelvic area using one to two different angles to visualize the bones and joints.
19 $13 $23
Quadrivalent influenza vaccine, preservative-free
A flu shot containing four strains of the influenza virus, formulated without preservatives, administered in a 0.5 ml dose.
19 $22 $40
Pneumococcal vaccine, 23-valent
A vaccine that protects against 23 types of pneumococcal bacteria. It is used to prevent infections caused by these bacteria.
19 $131 $175
Limited abdominal ultrasound
A focused ultrasound examination of the abdomen to evaluate specific organs or areas. This procedure uses sound waves to create images of internal structures.
18 $41 $62
Parathyroid hormone level test
A blood test that measures the amount of parathyroid hormone in your body. This hormone helps regulate calcium levels in the blood and bones.
18 $40 $150
Ultrasound of arm or leg veins
An ultrasound exam of the veins in one arm or leg using compression and other maneuvers to assess blood flow and check for blockages.
18 $67 $94
Ultrasound of head and neck soft tissue
This procedure uses sound waves to create images of the soft tissues in the head and neck area. It allows for the visualization of structures beneath the skin without using radiation.
16 $56 $88
Total cortisol level test
A blood test that measures the total amount of cortisol hormone in your body. Cortisol is a hormone produced by the adrenal glands.
16 $16 $65
Recombinant quadrivalent influenza vaccine
A flu shot that protects against four strains of influenza virus. It is produced using recombinant DNA technology rather than growing the virus in eggs.
16 $69 $70
Rheumatoid factor level 15 $6 $45
Echocardiogram, transthoracic
An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function.
15 $96 $127
Limited ultrasound of joint or extremity
A focused ultrasound exam of a specific joint or other structure in the arm or leg, excluding blood vessels.
14 $10 $56
Adm sarscv2 bvl 50mcg/.5ml a 12 $39 $40
Creatinine test (kidney function)
A blood test that measures the amount of creatinine to assess kidney function or detect muscle injury.
12 $5 $7
Continuous external EKG monitoring, 48 hours to 7 days
This procedure involves recording, analyzing, and interpreting a continuous external electrocardiogram (EKG) over a period of more than 48 hours up to 7 days.
12 $197 $300
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. These counts do not measure clinical quality or years of experience.

Industry Payment Transparency

Open Payments through 2024 ↗
$6,138
Total received (2018-2024)
Avg $877/year across 7 years
Top 14% in TX for internal medicine
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
37
Companies
436
Payment records
Payments are publicly reported; disclosure does not establish legality · Not evidence of wrongdoing · How to interpret →

Payment categories are unavailable while the source breakdown is being rebuilt. Company and year totals do not identify how much belongs to each category.

Payment trend by year

Annual totals from pharmaceutical and medical device companies.

2024
$1,732
2023
$678
2022
$105
2021
$27
2020
$229
2019
$1,429
2018
$1,938

Payments by company (2024)

PFIZER INC.
$295
Novo Nordisk Inc
$273
E.R. Squibb & Sons, L.L.C.
$188
ABBVIE INC.
$186
AstraZeneca Pharmaceuticals LP
$144
Amgen Inc.
$105
Inspire Medical Systems, Inc.
$100
Phathom Pharmaceuticals, Inc.
$88
Novartis Pharmaceuticals Corporation
$72
Lilly USA, LLC
$66
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$60
Boehringer Ingelheim Pharmaceuticals, Inc.
$53
Astellas Pharma US Inc
$33
GlaxoSmithKline, LLC.
$30
Abbott Laboratories
$20
Medtronic, Inc.
$18
Top 3 companies account for 43.7% of 2024 payments
All-time payments by company (2018-2024) ›
Novo Nordisk Inc
$735
AstraZeneca Pharmaceuticals LP
$672
PFIZER INC.
$601
GlaxoSmithKline, LLC.
$472
E.R. Squibb & Sons, L.L.C.
$396
Lilly USA, LLC
$393
Janssen Pharmaceuticals, Inc
$331
ABBVIE INC.
$295
Boehringer Ingelheim Pharmaceuticals, Inc.
$277
Amgen Inc.
$236
Takeda Pharmaceuticals U.S.A., Inc.
$234
Astellas Pharma US Inc
$218
Amarin Pharma Inc.
$179
Novartis Pharmaceuticals Corporation
$142
Inspire Medical Systems, Inc.
$100
Allergan Inc.
$93
Abbott Laboratories
$89
Phathom Pharmaceuticals, Inc.
$88
SANOFI-AVENTIS U.S. LLC
$80
Orexigen Therapeutics, Inc.
$76
AbbVie, Inc.
$63
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$60
Merck Sharp & Dohme Corporation
$36
Lundbeck LLC
$34
Supernus Pharmaceuticals, Inc.
$33
Genentech USA, Inc.
$32
Kowa Pharmaceuticals America, Inc.
$22
Medtronic, Inc.
$18
Antares Pharma, Inc.
$17
Dexcom, Inc.
$16
AbbVie Inc.
$16
Teva Pharmaceuticals USA, Inc.
$16
Neurocrine Biosciences, Inc.
$15
Merck Sharp & Dohme LLC
$14
IDORSIA PHARMACEUTICALS US INC
$14
Biohaven Pharmaceutical Holding Company Ltd.
$12
Synergy Pharmaceuticals Inc
$12
Top 3 companies account for 32.7% of all-time payments
Associated products mentioned in payments ›
ADVAIR · AIRSUPRA · AJOVY · ANORO · Aimovig · Amitiza · Androgel · BASAGLAR · BEVESPI AEROSPHERE · BEXSERO · BREO · BREZTRI · BYDUREON · BYSTOLIC · CAMZYOS · CHANTIX · CONTRAVE · Creon · Dexcom G6 Transmitter · ELIQUIS · EMGALITY · ENTRESTO · EVENITY · FARXIGA · FREESTYLE LIBRE 3 · INGREZZA · INSPIRE · INTELLIS ADAPTIVESTIM · INVOKANA · JANUVIA · JARDIANCE · LEQVIO · LINZESS · LYRICA · Livalo · MOUNJARO · MYRBETRIQ · Merlin Connectivity and Remote · Myrbetriq · NURTEC ODT · OTREXUP · OXTELLAR XR · Otezla · Ozempic · PAXLOVID · PREVNAR - 13 · PREVNAR 13 · PREVNAR 20 · Prolia · QULIPTA · QUVIVIQ · REXULTI · Rybelsus · SHINGRIX · SOLIQUA · SOLIQUA 100/33 · SPIRIVA RESPIMAT · STEGLATRO · STIOLTO RESPIMAT · SYMBICORT · SYNTHROID · Synthroid · TOUJEO · TRADJENTA · TRELEGY ELLIPTA · TRULICITY · Tresiba · Trintellix · Trulance · UBRELVY · Uloric · VESICARE · VOQUEZNA · VRAYLAR · VYEPTI · Vascepa · Veozah · Victoza · Wegovy · XARELTO · XIFAXAN · Xofluza
Should you be concerned? Industry payments are disclosed through CMS Open Payments. Disclosure alone does not establish their purpose, legality, or effect on care. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
Looking for an internal medicine specialist in Amarillo?
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Geographic Context

Internal medicine physicians in nearby ZIP areas
104
County median income
$50,448
Nearest hospital to ZIP centroid (approximate)
QUAIL CREEK SURGICAL HOSPITAL
0.0 mi

Data Sources

Provider Registry ✓ NPPES NPPES snapshot; verify current record
Medicare Enrollment ✓ PECOS PECOS snapshot
Practice Data ✓ Medicare Util. Annual (CY lag)
Industry Payments ✓ Open Payments CY 2024
Disciplinary History — Not included N/A

This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →

Summary

Dr. Keister is a clinical cardiology specialist, with above-average Medicare volume (top 1% in TX), with 20 years of NPI registration.

This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →

Frequently Asked Questions

Is Dr. Keister experienced with testosterone injection?
Based on Medicare claims data, Dr. Keister performed 7,700 testosterone injection services. These records cover Medicare fee-for-service activity, including eligible younger beneficiaries; they do not measure total practice volume or clinical quality.
Does Dr. Keister receive payments from pharmaceutical companies?
Yes. Dr. Keister received a total of $6,138 from 37 companies across 436 payment records. A record can group multiple payments. These transfers are publicly disclosed through CMS Open Payments. Disclosure alone does not establish their legality or effect on care. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Keister's costs compare to other internal medicine physicians in Amarillo?
Dr. Keister's average Medicare payment per service is $21. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Keister) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating the presence of registry, enrollment, activity or payment records, not verified experience or clinical quality. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Source publication dates and the snapshots loaded on this site can differ. Rebuilding a page does not refresh its source records. Check the Medicare reporting year and the payment interval shown above; consult the linked official sources for newer releases and current registry details. See our data freshness policy →
About this page

This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.

This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.

Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology

Data Disclaimer — Data sourced from the Centers for Medicare & Medicaid Services (CMS): National Plan and Provider Enumeration System (NPPES), Open Payments program, Medicare Provider Utilization and Payment Data, and Provider Enrollment & Certification data (PECOS). Published under the Freedom of Information Act (FOIA). This website is not affiliated with, endorsed by, or authorized by CMS, HHS, or the U.S. Government. Data may contain errors as reported to CMS by providers and reporting entities. Industry payment disclosure alone establishes neither wrongdoing nor legality. Medicare data reflects only patients aged 65+ or those with qualifying disabilities. For corrections, contact CMS directly. This information does not constitute medical advice and should not be used as the sole basis for choosing a healthcare provider. Procedure descriptions use plain language and do not reference CPT® codes, which are copyrighted by the American Medical Association. Full methodology → · Report a data error → · Privacy policy →