Annie Lee Oh, M.D.
Hematology & Oncology Physician · Riverside, CA
Annie Lee Oh, M.D. is a hematology & oncology physician with a practice address in Riverside, California, and NPI 1205028404, issued on Aug 13, 2007. Check the license (California A101541, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Annie Lee Oh
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- A101541 CA
036.126895 IL
Self-reported in NPPES; status is on the state search - Practice location
- 10800 Magnolia Ave # 438, Riverside, CA 92505
- Phone
- (951) 353-4418
- Enumerated
- Aug 13, 2007
- Record last updated
- Nov 2, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100617000199); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →
Verify Annie Lee Oh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A101541Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% more Medicare Part D claims than the average hematology & oncology physician in 2024
1,563 Medicare Part D claims for 305 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims. 24 claims were for opioids.
Most prescribed
- Anastrozole186 claims
- Hydroxyurea85 claims
- Abiraterone Acetate84 claims
- Prednisone73 claims
- Dexamethasone71 claims
- Ondansetron Hcl67 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupRiverside, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Annie Lee Oh among 1,583 hematology & oncology physician records in California
Annie Lee Oh, M.D. is one of 1,583 hematology & oncology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 46% of them.
- NPI issued2007 · 46% of these records are older, 40% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2006 · median 2003 among the 1,124 with a school on file
- Record last updated2021 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in California
There are 1,583 hematology & oncology physician records in California.
All 1,583 in California → Every provider in Riverside → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Xinting Fu, MDRiverside, CA 925051770650582
- Fawaz Gailani, MDRiverside, CA 925051013084839
- Andy Jang, MDRiverside, CA 925051386703031
- Candice Ruby, MDRiverside, CA 925051407904451
- Sam Yeh, MDRiverside, CA 925051689741498
- Muhammad Muslim, MDRiverside, CA 925061861571218
- Ghaleb Saab, MDRiverside, CA 925061396720850
- Vaishali Saste, M.D.Riverside, CA 925061902950033
Common questions
What is Annie Lee Oh, M.D.'s NPI number?
Annie Lee Oh, M.D.'s National Provider Identifier (NPI) is 1205028404, issued on Aug 13, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Annie Lee Oh, M.D. located?
The NPPES record lists a practice address at 10800 Magnolia Ave # 438, Riverside, CA, 92505. Phone: (951) 353-4418. Providers update this record themselves, so call before visiting.
How can I verify Annie Lee Oh, M.D.'s license?
NPPES lists California license number A101541, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Annie Lee Oh, M.D. prescribe under Medicare Part D?
In 2024, Annie Lee Oh, M.D. had 1,563 Medicare Part D claims for 305 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.