Nga Pham, MD
NPI 1831118686 · Internal Medicine Physician · San Jose, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nga Pham, MD is a Internal Medicine Physician provider in San Jose, CA (NPI 1831118686).
Provider details
- NPI number
- 1831118686
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- A069545 (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
747 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 461 | $109 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 258 | $155 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 28 | $158 |
Typical Medicare-allowed amounts for these services range $109–$158 (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 · 76 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 369 | 144 |
| Losartan Potassium | 291 | 112 |
| Fluticasone Propionate | 222 | 80 |
| Amlodipine Besylate | 186 | 74 |
| Triamcinolone Acetonide | 185 | 76 |
| Omeprazole | 153 | 59 |
| Rosuvastatin Calcium | 152 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-19
- Last updated
- 2010-01-07
Frequently asked questions
- What is Nga Pham's NPI number?
- Nga Pham's National Provider Identifier (NPI) is 1831118686, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nga Pham's specialty?
- Nga Pham is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nga Pham located?
- Nga Pham's practice location on file with NPPES is 1569 Lexann Ave, San Jose, CA 95121-1794.
- What is Nga Pham's phone number?
- The practice phone number listed in the NPPES registry for Nga Pham is (408) 532-0105.
- Does Nga Pham accept Medicare?
- Nga Pham is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nga Pham's NPI active?
- Yes — Nga Pham's NPI (1831118686) is active in the NPPES registry as of the last update on 2010-01-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.