Rafi Syed Ahmed, MD
Hematology & Oncology Physician · Irvine, CA
Rafi Syed Ahmed, MD is a hematology & oncology physician with a practice address in Irvine, California, and NPI 1205093028, issued on May 20, 2008. Check the license (California A112161, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Rafi Syed Ahmed
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- A112161 CA
Self-reported in NPPES; status is on the state search - Practice location
- 16105 Sand Canyon Ave Ste 230, Irvine, CA 92618
- Phone
- (949) 764-4060
- Enumerated
- May 20, 2008
- Record last updated
- May 29, 2026
- Fax
- (949) 764-4061
- Medicaid ID
- 1205093028 CA
- Medicare enrollment
- Enrolled (PECOS I20120315000561); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →
Also registered at 16105 Sand Canyon Ave Ste 230
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cori Chastain, NPFamily Nurse Practitioner1265143416
- Tara SeeryHematology & Oncology Physician1043415961
- Pollyanna Tang, PA-CPhysician Assistant1669005054
Verify Rafi Syed Ahmed in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A112161Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.3 times the Medicare Part D claims of the average hematology & oncology physician in 2024
1,997 Medicare Part D claims for 281 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
- Abiraterone Acetate569 claims
- Prednisone267 claims
- Xtandi172 claims
- Letrozole106 claims
- Dexamethasone63 claims
- Nubeqa62 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
- Hoag ClinicIrvine, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rafi Syed Ahmed among 1,583 hematology & oncology physician records in California
Rafi Syed Ahmed, MD 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 2008, is newer than 60% of them.
- NPI issued2008 · 60% of these records are older, 34% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2008 · median 2003 among the 1,124 with a school on file
- Record last updated2026 · 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 Irvine → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Tiffanie Do, M.D.Irvine, CA 926181194251710
- Nader Kashani, MDIrvine, CA 926181285793893
- Sudarsan Kollimuttathuillam, MDIrvine, CA 926181902324528
- Lisa Lee, M.D.Irvine, CA 926181144583733
- David Lou, M.D., PH.D.Irvine, CA 926181477729861
- Charisma Mylavarapu, D.O.Irvine, CA 926181477117653
- Tara SeeryIrvine, CA 926181043415961
- Nerses Tchekmedyian, M.D.Irvine, CA 926181821032129
Common questions
What is Rafi Syed Ahmed, MD's NPI number?
Rafi Syed Ahmed, MD's National Provider Identifier (NPI) is 1205093028, issued on May 20, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Rafi Syed Ahmed, MD located?
The NPPES record lists a practice address at 16105 Sand Canyon Ave Ste 230, Irvine, CA, 92618. Phone: (949) 764-4060. Providers update this record themselves, so call before visiting.
How can I verify Rafi Syed Ahmed, MD's license?
NPPES lists California license number A112161, 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 Rafi Syed Ahmed, MD prescribe under Medicare Part D?
In 2024, Rafi Syed Ahmed, MD had 1,997 Medicare Part D claims for 281 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.