Medicare Enrolled
Dr. Christopher Littlejohn, M.D.
Internal Medicine · Longview, TX
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
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. Littlejohn 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 →
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What this data tells you about Dr. Littlejohn
Dr. Christopher Littlejohn is an internal medicine specialist in Longview, TX, with 10 years of NPI registration. Based on federal Medicare data, Dr. Littlejohn performed 30,453 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Littlejohn received a total of $4,338 from 39 pharmaceutical and/or device companies across 166 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. Littlejohn 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.
✓ 10 years of NPI registration
▲ Top 1% volume in TX
$4,338 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗30,453
Medicare services
Top 1% in TX for internal medicine
Not available
Unique patients (not deduplicated)
$8
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 |
|---|---|---|---|
| Iron infusion (Feraheme) An injection of ferumoxytol used to treat iron deficiency anemia in patients not on dialysis. |
9,690 | $0 | $5 |
| Darbepoetin injection (Aranesp) for anemia An injection of darbepoetin alfa used for non-end-stage renal disease purposes. |
8,250 | $2 | $20 |
| Iron sucrose injection (Venofer) An injection of iron sucrose used to replenish iron levels in the body. |
5,800 | $0 | $2 |
| Pembrolizumab injection (Keytruda) | 3,600 | $44 | $138 |
| Contrast dye for imaging (iodine-based) A contrast agent containing 300-399 mg/ml of iodine used to enhance imaging studies. It is administered per milliliter to improve the visibility of internal structures. |
1,103 | $0 | $3 |
| Dexamethasone injection (steroid) An injection of dexamethasone sodium phosphate, a corticosteroid medication, administered in a dose of 1 milligram. |
568 | $0 | $1 |
| Injection, granisetron hydrochloride, 100 mcg | 230 | $0 | $24 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
124 | $8 | $20 |
| 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. |
109 | $8 | $36 |
| Intravenous chemotherapy infusion, 1 hour or less Administration of chemotherapy medication directly into a vein. The procedure takes one hour or less to complete. |
105 | $99 | $707 |
| Comprehensive metabolic blood panel A blood test that measures a group of chemicals, including glucose, electrolytes, and kidney and liver function markers. |
74 | $10 | $64 |
| Additional sequential IV infusion, 1 hour or less This code represents an additional intravenous infusion administered sequentially to a primary infusion. It covers the administration time of one hour or less. |
72 | $22 | $157 |
| Non-hormonal chemotherapy injection This procedure involves administering non-hormonal anti-neoplastic chemotherapy medication via injection into the skin or muscle tissue. |
63 | $55 | $211 |
| Intravenous infusion, 1 hour or less Administration of medication or fluid directly into a vein for therapeutic, preventive, or diagnostic purposes. The procedure lasts one hour or less. |
60 | $50 | $313 |
| 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. |
54 | $11 | $96 |
| Basic metabolic blood panel A blood test that measures a group of basic chemicals, including total calcium levels. |
43 | $8 | $49 |
| Intensity-modulated radiation therapy delivery Delivery of radiation therapy using narrow beams that are spatially and temporally modulated to target specific areas. This process is performed per treatment session. |
36 | $269 | $2,762 |
| Intravenous injection of additional new drug or substance Administration of an additional new medication or substance directly into a vein. |
35 | $12 | $108 |
| 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. |
34 | $98 | $368 |
| Additional hour of intravenous chemotherapy This code represents the administration of chemotherapy medication into a vein for each additional hour beyond the initial period. |
33 | $21 | $161 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
33 | $137 | $496 |
| Intravenous infusion of new drug or substance, 1 hour or less This procedure involves administering a new medication or substance directly into a vein through an existing access site. The infusion is completed within one hour or less. |
31 | $49 | $344 |
| Ferritin level test (iron stores) A blood test that measures the level of ferritin, a protein that stores iron in the body. |
27 | $13 | $60 |
| Iron level test | 27 | $6 | $27 |
| 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. |
27 | $9 | $35 |
| New patient office visit, complex (60-74 min) | 27 | $168 | $709 |
| Folic acid level test A blood test that measures the amount of folic acid in the serum. |
23 | $14 | $73 |
| Vitamin B-12 level test A blood test that measures the amount of vitamin B-12 in your body. |
22 | $15 | $76 |
| Irrigation of implanted venous access device This procedure involves flushing an implanted venous access device to clear blockages or maintain patency. It ensures the device remains functional for delivering medications or fluids. |
22 | $19 | $114 |
| Automated red blood cell count with calculations A blood test that automatically counts red blood cells and performs additional calculations to assess blood health. |
19 | $5 | $26 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
19 | $120 | $565 |
| Diphenhydramine injection, up to 50 mg An injection of diphenhydramine hydrochloride, an antihistamine medication, administered in a dose of up to 50 milligrams. |
19 | $1 | $7 |
| Lactate dehydrogenase (LDH) level test A blood test that measures the amount of lactate dehydrogenase, an enzyme found in many body tissues. It helps assess tissue damage or disease. |
18 | $6 | $31 |
| Normal saline infusion, 1000 cc Administration of 1000 cc of normal saline solution into a vein. This procedure involves the intravenous delivery of a sterile saltwater solution. |
18 | $2 | $19 |
| Injection, fosnetupitant 235 mg and palonosetron 0.25 mg | 14 | $379 | $1,722 |
| 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. |
13 | $69 | $250 |
| CT scan of chest with contrast A computed tomography scan of the chest using a contrast dye to enhance the visibility of internal structures. |
11 | $57 | $821 |
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.
32.8% high complexity
65.1% medium
2.2% routine
Industry Payment Transparency
Open Payments through 2024 ↗$4,338
Total received (2018-2024)
Avg $620/year across 7 years
Top 18% in TX for internal medicine
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
39
Companies
166
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
$1,365
2023
$741
2022
$544
2021
$857
2020
$588
2019
$125
2018
$119
Payments by company (2024)
AstraZeneca Pharmaceuticals LP
$145
Janssen Biotech, Inc.
$133
Eisai Inc.
$125
E.R. Squibb & Sons, L.L.C.
$110
Incyte Corporation
$104
Bayer Healthcare Pharmaceuticals Inc.
$99
GlaxoSmithKline, LLC.
$90
Merck Sharp & Dohme LLC
$87
PFIZER INC.
$77
Tempus AI, Inc
$72
Aveo Pharmaceuticals, Inc.
$65
TAIHO ONCOLOGY, INC.
$33
Lilly USA, LLC
$31
Mirati Therapeutics, Inc.
$24
Blueprint Medicines Corporation
$23
SOBI, INC
$23
Regeneron Healthcare Solutions, Inc.
$21
ADC Therapeutics America, Inc.
$20
GENZYME CORPORATION
$18
Celgene Corporation
$18
EMD Serono, Inc.
$17
ABBVIE INC.
$16
Sirtex Medical Inc
$15
Top 3 companies account for 29.5% of 2024 payments
All-time payments by company (2018-2024) ›
Incyte Corporation
$619
AstraZeneca Pharmaceuticals LP
$590
GlaxoSmithKline, LLC.
$335
Janssen Biotech, Inc.
$231
Genentech USA, Inc.
$161
Kite Pharma, Inc.
$147
Amgen Inc.
$145
Bayer Healthcare Pharmaceuticals Inc.
$131
Eisai Inc.
$125
BeiGene USA, Inc.
$117
Rigel Pharmaceuticals, Inc.
$115
ADC Therapeutics America, Inc.
$112
E.R. Squibb & Sons, L.L.C.
$110
Merck Sharp & Dohme LLC
$109
Takeda Pharmaceuticals U.S.A., Inc.
$104
GENZYME CORPORATION
$100
Pharmacyclics LLC, An AbbVie Company
$91
Blueprint Medicines Corporation
$87
Acrotech Biopharma LLC
$79
PFIZER INC.
$77
Regeneron Healthcare Solutions, Inc.
$74
Tempus AI, Inc
$72
Seagen Inc.
$66
Aveo Pharmaceuticals, Inc.
$65
Karyopharm Therapeutics Inc.
$61
Novartis Pharmaceuticals Corporation
$61
Adaptive Biotechnologies Corporation
$52
Epizyme, Inc.,
$44
ABBVIE INC.
$44
TAIHO ONCOLOGY, INC.
$33
Lilly USA, LLC
$31
Mirati Therapeutics, Inc.
$24
SOBI, INC
$23
Taiho Oncology, Inc.
$20
Sun Pharmaceutical Industries Inc.
$19
Celgene Corporation
$18
EMD Serono, Inc.
$17
MorphoSys, US Inc.
$15
Sirtex Medical Inc
$15
Top 3 companies account for 35.6% of all-time payments
Associated products mentioned in payments ›
ADCETRIS · AYVAKIT · BELEODAQ · BLENREP · BRUKINSA · CALQUENCE · CARVYKTI · ELAHERE · FOTIVDA · IBRANCE · ICLUSIG · IMBRUVICA · IMFINZI · IMJUDO · INQOVI · Imbruvica · JAKAFI · JEMPERLI · KEYTRUDA · KRAZATI · Kyprolis · LIBTAYO · LONSURF · LYNPARZA · Lenvima · Lunsumio · MONJUVI · NINLARO · Nubeqa · OJJAARA · OPDIVO · Odomzo · PADCEV · REBLOZYL · SARCLISA · SCEMBLIX · SHINGRIX · SIR-Spheres Microspheres · Stivarga · TAGRISSO · TASIGNA · TAZVERIK · TECENTRIQ · TECVAYLI · Tavalisse · VENCLEXTA · VERZENIO · VONJO · XPOVIO · XT CDX · ZEJULA · clonoSEQ
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 →
Geographic Context
Internal medicine physicians in nearby ZIP areas
122
County median income
$64,809
Nearest hospital to ZIP centroid (approximate)
CHRISTUS GOOD SHEPHERD MEDICAL CENTER
0.0 mi
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. Littlejohn is a mixed practice specialist, with above-average Medicare volume (top 1% in TX).
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Littlejohn experienced with iron infusion (feraheme)?
Based on Medicare claims data, Dr. Littlejohn performed 9,690 iron infusion (feraheme) 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. Littlejohn receive payments from pharmaceutical companies?
Yes. Dr. Littlejohn received a total of $4,338 from 39 companies across 166 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. Littlejohn's costs compare to other internal medicine physicians in Longview?
Dr. Littlejohn's average Medicare payment per service is $8. 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. Littlejohn) 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 →
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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.
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