Namphuong Tran, M.D.
NPI 1598110686 · Internal Medicine Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Namphuong Tran, M.D. is a Internal Medicine Physician provider in Stanford, CA (NPI 1598110686).
Provider details
- NPI number
- 1598110686
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A156686 (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
10 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
676 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 203 | $153 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 150 | $156 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 124 | $214 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 99 | $19 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 40 | $106 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 62 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 277 | 90 |
| Rosuvastatin Calcium | 195 | 69 |
| Amlodipine Besylate | 154 | 53 |
| Levothyroxine Sodium | 118 | 38 |
| Losartan Potassium | 102 | 32 |
| Alendronate Sodium | 74 | 30 |
| Metoprolol Succinate |
Practice location
Mailing address
Additional practice locations (2)
- 845 Jackson StSan Francisco, CA 94133-4851Phone: (415) 982-2400
- 1100 Van Ness AveSan Francisco, CA 94109-6978Phone: (415) 600-3458
Registry dates
- Enumerated
- 2016-04-26
- Last updated
- 2026-05-28
- Certified
- 2026-05-28
Frequently asked questions
- What is Namphuong Tran's NPI number?
- Namphuong Tran's National Provider Identifier (NPI) is 1598110686, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Namphuong Tran's specialty?
- Namphuong Tran is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Namphuong Tran located?
- Namphuong Tran's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Namphuong Tran's phone number?
- The practice phone number listed in the NPPES registry for Namphuong Tran is (650) 723-4000.
- Does Namphuong Tran accept Medicare?
- Namphuong Tran is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Namphuong Tran's NPI active?
- Yes — Namphuong Tran's NPI (1598110686) is active in the NPPES registry as of the last update on 2026-05-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.