Uyen-Chi Huynh, M.D.
NPI 1205271335 · Internal Medicine Physician · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Uyen-Chi Huynh, M.D. is a Internal Medicine Physician provider in Walnut Creek, CA (NPI 1205271335).
Provider details
- NPI number
- 1205271335
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A138368 (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
13 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
3,474 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) |
|---|---|---|
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 883 | $86 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 879 | $124 |
| Subsequent Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, at Least 45 Minutes99310 | 662 | $176 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 456 | $88 |
| Initial Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, 50 Minutes Or More99306 | 158 | $206 |
| Hospital Discharge Day Management, 30 Minutes Or Less |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 103 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 235 | 59 |
| Gabapentin | 167 | 43 |
| Atorvastatin Calcium | 140 | 43 |
| Levothyroxine Sodium | 138 | 24 |
| Apixabanbrand: Eliquis | 113 | 34 |
| Furosemide | 111 | 35 |
| Carvedilol | 94 |
Practice location
Mailing address
Additional practice locations (1)
- 601 Van Ness Ave Ste E3619San Francisco, CA 94102-3200Phone: (415) 531-9047Fax: (415) 213-4659
Registry dates
- Enumerated
- 2013-05-02
- Last updated
- 2025-12-19
- Certified
- 2025-12-19
Frequently asked questions
- What is Uyen-Chi Huynh's NPI number?
- Uyen-Chi Huynh's National Provider Identifier (NPI) is 1205271335, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Uyen-Chi Huynh's specialty?
- Uyen-Chi Huynh is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Uyen-Chi Huynh located?
- Uyen-Chi Huynh's practice location on file with NPPES is 1220 Rossmoor Parkway, Walnut Creek, CA 94595-2501.
- What is Uyen-Chi Huynh's phone number?
- The practice phone number listed in the NPPES registry for Uyen-Chi Huynh is (925) 947-3312.
- Does Uyen-Chi Huynh accept Medicare?
- Uyen-Chi Huynh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Uyen-Chi Huynh's NPI active?
- Yes — Uyen-Chi Huynh's NPI (1205271335) is active in the NPPES registry as of the last update on 2025-12-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.