Medicare Enrolled
Dr. Duc Phan, M.D
Internal Medicine · Houston, TX
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
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. Phan 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. Phan
Dr. Duc Phan is an internal medicine specialist in Houston, TX, with 16 years of NPI registration. Based on federal Medicare data, Dr. Phan performed 3,067 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Phan received a total of $25,005 from 70 pharmaceutical and/or device companies across 1805 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. Phan 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.
✓ 16 years of NPI registration
▲ Top 12% volume in TX
$25,005 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗3,067
Medicare services
Top 12% in TX for internal medicine
Not available
Unique patients (not deduplicated)
$66
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 |
|---|---|---|---|
| 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. |
938 | $86 | $178 |
| 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. |
344 | $65 | $135 |
| Home health agency supervision, complex multidisciplinary care Supervision by a physician or allowed practitioner for a patient receiving Medicare-covered services from a participating home health agency. This involves complex and multidisciplinary care modalities, with the patient not present during the supervision. |
167 | $77 | $158 |
| Annual wellness visit, follow-up A follow-up annual wellness visit that includes a personalized prevention plan of service. |
131 | $131 | $168 |
| Multiplex respiratory virus test (COVID-19, flu, RSV) A laboratory test that uses a multiplex amplified probe technique to detect severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), influenza virus types A and B, and respiratory syncytial virus (RSV). |
100 | $140 | $156 |
| Flu vaccine administration This procedure involves the administration of the influenza virus vaccine. It covers the process of delivering the vaccine to the patient. |
95 | $31 | $45 |
| 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. |
94 | $72 | $86 |
| Additional hour of intravenous hydration This code represents each additional hour of intravenous fluid administration beyond the initial hour. It is used to bill for extended hydration therapy. |
87 | $9 | $23 |
| Intravenous injection of additional new drug or substance Administration of an additional new medication or substance directly into a vein. |
87 | $12 | $34 |
| Advance care planning consultation, first 30 min A session focused on discussing and documenting future healthcare preferences and goals. This service covers the initial 30 minutes of the planning discussion. |
87 | $59 | $156 |
| Advance care planning, each additional 30 minutes This code covers each additional 30 minutes spent on advance care planning discussions beyond the initial session. It involves counseling patients and families about future healthcare preferences and end-of-life care options. |
87 | $57 | $150 |
| Annual depression screening | 73 | $19 | $26 |
| Face-to-face visit for durable medical equipment determination A required in-person visit with a healthcare provider to document the medical necessity for durable medical equipment. This visit must be performed by a nurse practitioner, physician assistant, or clinical nurse specialist. |
68 | $7 | $25 |
| 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. |
65 | $9 | $36 |
| 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. |
61 | $33 | $61 |
| Stool test for hidden blood (FIT) A laboratory test that analyzes a stool sample to detect hidden blood using an immunoassay method. |
59 | $16 | $18 |
| Multiple eye pressure measurements over time This procedure involves taking several measurements of the fluid pressure inside the eye across an extended period. It is used to monitor intraocular pressure levels. |
58 | $61 | $142 |
| Annual intensive behavioral therapy for cardiovascular disease, 15 minutes A yearly, in-person session focused on intensive behavioral therapy to help manage cardiovascular disease. The session lasts for 15 minutes and is conducted with the patient individually. |
54 | $26 | $38 |
| 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. |
53 | $80 | $210 |
| Strep A rapid test A rapid test to detect Group A Streptococcus bacteria using an immunoassay method with direct visual observation. |
47 | $16 | $20 |
| Influenza virus detection test A laboratory test that uses an immunoassay technique to detect the presence of the influenza virus through direct visual observation. |
41 | $16 | $20 |
| Prolonged preventive service, first 30 minutes This code covers the first 30 minutes of direct patient contact time spent on preventive services that exceeds the typical duration of the primary procedure. It is billed in addition to the code for the primary preventive service. |
37 | $64 | $126 |
| Annual alcohol misuse screening, 5 to 15 minutes | 33 | $19 | $26 |
| Intravenous hydration infusion, 31-60 minutes Administration of fluids into a vein to maintain hydration. This procedure involves an infusion lasting between 31 and 60 minutes. |
29 | $24 | $86 |
| Intravenous drug injection A procedure involving the administration of a medication or substance directly into a vein. |
29 | $27 | $84 |
| 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. |
27 | $39 | $79 |
| 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. |
26 | $94 | $241 |
| 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. |
26 | $166 | $207 |
| Complete ultrasound of abdomen A diagnostic imaging test that uses sound waves to create detailed pictures of the organs and structures within the abdomen. |
23 | $91 | $216 |
| Pneumonia vaccine administration This procedure involves the injection of a vaccine to protect against pneumococcal disease. It is administered by a healthcare provider. |
18 | $31 | $45 |
| New patient office visit (30-44 min) An initial office visit for a new patient lasting between 30 and 44 minutes. This code is used when the total time spent on the date of the encounter falls within this range. |
12 | $22 | $158 |
| Pneumococcal vaccine, 23-valent A vaccine that protects against 23 types of pneumococcal bacteria. It is used to prevent infections caused by these bacteria. |
11 | $131 | $185 |
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.
0.9% high complexity
6.7% medium
92.4% routine
Industry Payment Transparency
Open Payments through 2024 ↗$25,005
Total received (2018-2024)
Avg $3,572/year across 7 years
Top 4% in TX for internal medicine
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
70
Companies
1,805
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
$3,124
2023
$3,931
2022
$4,211
2021
$4,249
2020
$3,136
2019
$3,197
2018
$3,159
Payments by company (2024)
AstraZeneca Pharmaceuticals LP
$618
Amgen Inc.
$304
ABBVIE INC.
$272
GlaxoSmithKline, LLC.
$270
Bayer Healthcare Pharmaceuticals Inc.
$260
Lilly USA, LLC
$210
Novo Nordisk Inc
$184
SCILEX PHARMACEUTICALS INC.
$171
Sumitomo Pharma America, Inc.
$158
Boehringer Ingelheim Pharmaceuticals, Inc.
$149
AIMMUNE THERAPEUTICS, INC.
$138
PFIZER INC.
$83
Gilead Sciences, Inc.
$77
Exact Sciences Corporation
$56
Dexcom, Inc.
$30
Abbott Laboratories
$24
Ardelyx, Inc.
$24
Insmed, Inc.
$22
Hologic Sales and Service, LLC
$16
Astellas Pharma US Inc
$15
Otsuka America Pharmaceutical, Inc.
$14
EVOKE PHARMA, INC.
$14
E.R. Squibb & Sons, L.L.C.
$14
Top 3 companies account for 38.2% of 2024 payments
All-time payments by company (2018-2024) ›
AstraZeneca Pharmaceuticals LP
$3,406
Novo Nordisk Inc
$1,695
Lilly USA, LLC
$1,612
Amgen Inc.
$1,445
ABBVIE INC.
$1,441
GlaxoSmithKline, LLC.
$1,413
Boehringer Ingelheim Pharmaceuticals, Inc.
$1,074
Gilead Sciences, Inc.
$790
PFIZER INC.
$777
Amarin Pharma Inc.
$753
AbbVie Inc.
$710
Astellas Pharma US Inc
$701
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$537
SANOFI-AVENTIS U.S. LLC
$484
Bayer Healthcare Pharmaceuticals Inc.
$471
Takeda Pharmaceuticals U.S.A., Inc.
$451
Scilex Pharmaceuticals Inc.
$447
SCILEX PHARMACEUTICALS INC.
$432
Nestle HealthCare Nutrition Inc.
$406
Bayer HealthCare Pharmaceuticals Inc.
$380
Merck Sharp & Dohme Corporation
$377
Sumitomo Pharma America, Inc.
$359
Janssen Pharmaceuticals, Inc
$315
Allergan Inc.
$310
Eisai Inc.
$298
Abbott Laboratories
$283
Allergan, Inc.
$248
Biohaven Pharmaceutical Holding Company Ltd.
$211
Radius Health, Inc.
$193
AbbVie, Inc.
$181
Novartis Pharmaceuticals Corporation
$174
RedHill Biopharma Inc.
$154
Biohaven Pharmaceuticals, Inc.
$147
West-Ward Pharmaceuticals
$141
AIMMUNE THERAPEUTICS, INC.
$138
NESTLE HEALTHCARE NUTRITION INC.
$136
Kowa Pharmaceuticals America, Inc.
$135
Ironwood Pharmaceuticals, Inc
$134
Exact Sciences Corporation
$121
Synergy Pharmaceuticals Inc
$114
Celgene Corporation
$114
Merck Sharp & Dohme LLC
$113
VIVUS LLC
$110
Hikma Pharmaceuticals USA
$110
Otsuka America Pharmaceutical, Inc.
$101
Teva Pharmaceuticals USA, Inc.
$98
Corium, LLC
$87
Eyevance Pharmaceuticals LLC
$72
Evoke Pharma, Inc.
$60
EVOKE PHARMA, INC.
$55
Dexcom, Inc.
$54
Horizon Therapeutics plc
$43
Ardelyx, Inc.
$42
Esperion Therapeutics, Inc.
$42
LEO Pharma Inc.
$37
IRONWOOD PHARMACEUTICALS, INC
$28
E.R. Squibb & Sons, L.L.C.
$27
US WorldMeds, LLC
$25
Insmed, Inc.
$22
Sunovion Pharmaceuticals Inc.
$20
Bioventus LLC
$20
Genentech USA, Inc.
$18
Althera Pharmaceuticals LLC
$18
Bausch & Lomb, a division of Bausch Health US, LLC
$17
IBSA Pharma Inc.
$17
Hologic Sales and Service, LLC
$16
Mylan Specialty L.P.
$14
OptiNose US, Inc.
$14
Horizon Pharma plc
$12
ARBOR PHARMACEUTICALS, INC.
$11
Top 3 companies account for 26.8% of all-time payments
Associated products mentioned in payments ›
ADVAIR · AIRSUPRA · AJOVY · AMITIZA · ANORO · ANORO ELLIPTA · APTIMA · AREXVY · Adlarity · Aimovig · AirDuo Digihaler · Amitiza · Arikayce · BASAGLAR · BELSOMRA · BEPREVE · BREATHTEK · BREO · BREZTRI · BREZTRI AEROSPHERE · BYSTOLIC · CHANTIX · COLOGUARD · COLOGUARD DNA CAPTURE REAGENTS · COMIRNATY · CREON · Cologuard Collection Kit · Creon · DEXILANT · DUEXIS · DUZALLO · Dayvigo · Dexcom G6 Transmitter · Dexilant · ELIQUIS · EMGALITY · ENSTILAR · ENTRESTO · EUCRISA · EVENITY · Edarbi · FARXIGA · FASENRA · FLECTOR · FREESTYLE LIBRE · FREESTYLE LIBRE 2 · FREESTYLE LIBRE 3 · Flector · GELSYN 3 · GEMTESA · GIMOTI · GLYXAMBI · HUMALOG · IBSRELA · INVOKANA · JANUVIA · JARDIANCE · KRYSTEXXA · Kerendia · LEQVIO · LINZESS · LYRICA · Linzess · Livalo · Lucemyra/Lofexidine · MOTEGRITY · MOUNJARO · MYRBETRIQ · Mitigare · Motegrity · Movantik · Myrbetriq · NEXLETOL · NURTEC ODT · Otezla · Ozempic · PAXLOVID · PENNSAID · PREMARIN · PREVNAR 13 · Prolia · QSYMIA · QULIPTA · Qsymia · REXULTI · RYBELSUS · Repatha · Roszet · Rybelsus · SEGLENTIS · SHINGRIX · SOLIQUA · SOLIQUA 100/33 · SPIRIVA RESPIMAT · STEGLATRO · STIOLTO RESPIMAT · SYMBICORT · SYNJARDY · Seglentis · TOUJEO · TRADJENTA · TRELEGY ELLIPTA · TRULANCE · TRULICITY · Talicia · Tobradex ST · Tresiba · Trintellix · Trulance · Tymlos · UBRELVY · Uloric · VIBERZI · VRAYLAR · Vascepa · Vemlidy · Veozah · Victoza · XARELTO · XIFAXAN · XIIDRA · XTANDI · Xhance · Xofluza · Yupelri · ZENPEP · ZTLido · ZTLido 30 POUCH in 1 CARTON 1 PATCH in 1 POUCH
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
2,509
County median income
$73,104
Nearest hospital to ZIP centroid (approximate)
ALTUS HOUSTON HOSPITAL, LP
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. Phan is a clinical cardiology specialist, with above-average Medicare volume (top 12% in TX), with 16 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. Phan experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Phan performed 938 office visit, established patient (30-39 min) 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. Phan receive payments from pharmaceutical companies?
Yes. Dr. Phan received a total of $25,005 from 70 companies across 1,805 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. Phan's costs compare to other internal medicine physicians in Houston?
Dr. Phan's average Medicare payment per service is $66. 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. Phan) 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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