John Phan, MD
NPI 1972608214 · Internal Medicine Physician · San Jose, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Phan, MD is a Internal Medicine Physician provider in San Jose, CA (NPI 1972608214).
Provider details
- NPI number
- 1972608214
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G75733 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
54 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Screening Mammography77067 | 24 | $130 |
| X-Ray of Chest, 1 View71045 | 19 | $24 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Tracing93005 | 11 | $9 |
Typical Medicare-allowed amounts for these services range $9–$130 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 69 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 581 | 162 |
| Atorvastatin Calcium | 358 | 101 |
| Atenolol | 327 | 84 |
| Simvastatin | 310 | 86 |
| Metformin Hcl | 284 | 77 |
| Omeprazole | 223 | 61 |
| Losartan Potassium | 217 | 64 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-13
- Last updated
- 2007-09-12
Frequently asked questions
- What is John Phan's NPI number?
- John Phan's National Provider Identifier (NPI) is 1972608214, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Phan's specialty?
- John Phan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Phan located?
- John Phan's practice location on file with NPPES is 751 S Bascom Ave, San Jose, CA 95128-1627.
- What is John Phan's phone number?
- The practice phone number listed in the NPPES registry for John Phan is (408) 885-5000.
- Does John Phan accept Medicare?
- John Phan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Phan's NPI active?
- Yes — John Phan's NPI (1972608214) is active in the NPPES registry as of the last update on 2007-09-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.