Yi Yi Gu, M.D.
NPI 1932183472 · Rheumatology Physician · Oakland, CA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Yi Yi Gu, M.D. is a Rheumatology Physician provider in Oakland, CA (NPI 1932183472).
Provider details
- NPI number
- 1932183472
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A88414 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 271 | 115 |
| Methotrexate Sodiumbrand: Methotrexate | 221 | 105 |
| Hydroxychloroquine Sulfate | 132 | 53 |
| Allopurinol | 129 | 44 |
| Tofacitinib Citratebrand: Xeljanz | 89 | 11 |
| Colchicine | 58 | 25 |
| Adalimumab-Attobrand: Amjevita(cf) | 46 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-11-29
- Last updated
- 2022-01-06
Frequently asked questions
- What is Yi Yi Gu's NPI number?
- Yi Yi Gu's National Provider Identifier (NPI) is 1932183472, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Yi Yi Gu's specialty?
- Yi Yi Gu is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Yi Yi Gu located?
- Yi Yi Gu's practice location on file with NPPES is 350 30th St, Oakland, CA 94609-3424.
- What is Yi Yi Gu's phone number?
- The practice phone number listed in the NPPES registry for Yi Yi Gu is (510) 465-6700.
- Does Yi Yi Gu accept Medicare?
- Yi Yi Gu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Yi Yi Gu's NPI active?
- Yes — Yi Yi Gu's NPI (1932183472) is active in the NPPES registry as of the last update on 2022-01-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.