Tien Trinh, M.D.
NPI 1881791135 · Internal Medicine Physician · San Jose, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tien Trinh, M.D. is a Internal Medicine Physician provider in San Jose, CA (NPI 1881791135).
Provider details
- NPI number
- 1881791135
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G79654 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 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
9,166 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) |
|---|---|---|
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 3,732 | $66 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 975 | $189 |
| Annual Alcohol Misuse Screening, 5 to 15 MinutesG0442 | 649 | $20 |
| Annual, Face-To-Face Intensive Behavioral Therapy for Cardiovascular Disease, Individual, 15 MinutesG0446 | 649 | $26 |
| Advance Care Planning, First 30 Minutes99497 | 640 | $85 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 508 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 134 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 505 | 87 |
| Amlodipine Besylate | 369 | 71 |
| Losartan Potassium | 322 | 60 |
| Apixabanbrand: Eliquis | 308 | 35 |
| Metformin Hcl | 245 | 35 |
| Lisinopril | 204 | 32 |
| Levothyroxine Sodium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$29 across 1 record (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
- 2006-09-20
- Last updated
- 2016-05-24
Frequently asked questions
- What is Tien Trinh's NPI number?
- Tien Trinh's National Provider Identifier (NPI) is 1881791135, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tien Trinh's specialty?
- Tien Trinh is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Tien Trinh located?
- Tien Trinh's practice location on file with NPPES is 728 Colleen Dr, San Jose, CA 95123-4605.
- What is Tien Trinh's phone number?
- The practice phone number listed in the NPPES registry for Tien Trinh is (408) 809-7533.
- Does Tien Trinh accept Medicare?
- Tien Trinh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tien Trinh's NPI active?
- Yes — Tien Trinh's NPI (1881791135) is active in the NPPES registry as of the last update on 2016-05-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.