Stephen Yee, MD
NPI 1528078185 · Hematology & Oncology Physician · Oakland, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Yee, MD is a Hematology & Oncology Physician provider in Oakland, CA (NPI 1528078185).
Provider details
- NPI number
- 1528078185
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G42840 (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
19 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 · 9 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Letrozole | 34 |
| Ondansetron Hcl | 25 |
| Anagrelide Hcl | 15 |
| Prochlorperazine Maleate | 15 |
| Lenalidomide | 13 |
| Lenalidomidebrand: Revlimid | 13 |
| Osimertinib Mesylatebrand: Tagrisso | 12 |
| Alendronate Sodium | 11 |
| Nilotinib Hclbrand: Tasigna | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-08
- Last updated
- 2012-02-22
Frequently asked questions
- What is Stephen Yee's NPI number?
- Stephen Yee's National Provider Identifier (NPI) is 1528078185, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Yee's specialty?
- Stephen Yee is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Yee located?
- Stephen Yee's practice location on file with NPPES is 1411 East 31st Street, Oakland, CA 94602.
- What is Stephen Yee's phone number?
- The practice phone number listed in the NPPES registry for Stephen Yee is (510) 437-4323.
- Does Stephen Yee accept Medicare?
- Stephen Yee is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Yee's NPI active?
- Yes — Stephen Yee's NPI (1528078185) is active in the NPPES registry as of the last update on 2012-02-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.