Annie Oh, M.D.
NPI 1205028404 · Hematology & Oncology Physician · Riverside, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Annie Oh, M.D. is a Hematology & Oncology Physician provider in Riverside, CA (NPI 1205028404).
Provider details
- NPI number
- 1205028404
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 036.126895 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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 · 33 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 186 | 62 |
| Hydroxyurea | 85 | 31 |
| Abiraterone Acetate | 84 | 15 |
| Prednisone | 73 | 20 |
| Dexamethasone | 71 | 18 |
| Ondansetron Hcl | 67 | 31 |
| Letrozole | 62 | 20 |
| Lenalidomide | 59 | — |
Practice location
Mailing address
Additional practice locations (1)
- 840 S Wood StSuite 820-E, M/C 713Chicago, IL 60612-4325Phone: (312) 996-9424
Registry dates
- Enumerated
- 2007-08-13
- Last updated
- 2021-11-02
- Certified
- 2021-11-02
Frequently asked questions
- What is Annie Oh's NPI number?
- Annie Oh's National Provider Identifier (NPI) is 1205028404, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Annie Oh's specialty?
- Annie Oh is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Annie Oh located?
- Annie Oh's practice location on file with NPPES is 10800 Magnolia Ave # 438, Riverside, CA 92505.
- What is Annie Oh's phone number?
- The practice phone number listed in the NPPES registry for Annie Oh is (951) 353-4418.
- Does Annie Oh accept Medicare?
- Annie Oh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Annie Oh's NPI active?
- Yes — Annie Oh's NPI (1205028404) is active in the NPPES registry as of the last update on 2021-11-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.