Duc Phan, M.D
NPI 1083946693 · Internal Medicine Physician · Houston, TX
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Duc Phan, M.D is a Internal Medicine Physician provider in Houston, TX (NPI 1083946693).
Provider details
- NPI number
- 1083946693
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D
- Sex
- Male
- Sole proprietor
- Yes
- License
- A111050 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
16 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,701 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 995 | $129 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 314 | $91 |
| Stool Analysis for Blood, By Fecal Hemoglobin Determination By Immunoassay82274 | 207 | $16 |
| Physician Or Allowed Practitioner Supervision of a Patient Receiving Medicare-Covered Services Provided By a Participating Home Health Agency (patient Not Present) Requiring Complex and Multidisciplinary Care Modalities Involving Regular Physician Or AllowG0181 | 169 | $105 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 134 | $130 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 323 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 1,869 | 724 |
| Losartan Potassium | 1,396 | 517 |
| Rosuvastatin Calcium | 1,383 | 511 |
| Metformin Hcl | 1,269 | 468 |
| Icosapent Ethylbrand: Vascepa | 1,172 | 333 |
| Fluticasone Propionate | 1,017 | 414 |
| Pioglitazone Hcl | 970 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,124 across 205 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-02-06
- Last updated
- 2013-12-06
Frequently asked questions
- What is Duc Phan's NPI number?
- Duc Phan's National Provider Identifier (NPI) is 1083946693, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Duc Phan's specialty?
- Duc Phan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Duc Phan located?
- Duc Phan's practice location on file with NPPES is 10603 Bellaire Blvd, Houston, TX 77072-5222.
- What is Duc Phan's phone number?
- The practice phone number listed in the NPPES registry for Duc Phan is (832) 328-1437.
- Does Duc Phan accept Medicare?
- Duc Phan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Duc Phan's NPI active?
- Yes — Duc Phan's NPI (1083946693) is active in the NPPES registry as of the last update on 2013-12-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.