Tamer Adel Othman, M.D.
Hematology (Internal Medicine) Physician · Irvine, CA
Tamer Adel Othman, M.D. is a hematology (internal medicine) physician with a practice address in Irvine, California, and NPI 1316471980, issued on Apr 20, 2017. Check the license (California A158324, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Tamer Adel Othman
- Credential
- M.D.
- Primary taxonomy
- Hematology (Internal Medicine) Physician 207RH0000X
- License number
- A158324 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1000 Fivepoint, Irvine, CA 92618
- Phone
- (800) 826-4673
- Enumerated
- Apr 20, 2017
- Record last updated
- Nov 3, 2025
- Medicare enrollment
- Enrolled (PECOS I20230501002654); accepts Medicare assignment
- Medical or professional school
- Rush Medical College Of Rush University, 2017
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology (internal medicine) physician records → All 175 in California → Look up another NPI →
Also registered at 1000 Fivepoint
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mary Alessi, PA-CPhysician Assistant1962711838
- Tara Anderson, PA-CPhysician Assistant1770058349
- Aubree Ashdown, PA-CPhysician Assistant1679244503
- Ghazal Bahri, M.D.Hospitalist Physician1770013146
- Meg Camille Baldonado, FNP-CFamily Nurse Practitioner1346602604
- Joseph Barrera, FNPFamily Nurse Practitioner1306289491
Verify Tamer Adel Othman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A158324Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% fewer Medicare Part D claims than the average hematology (internal medicine) physician in 2024
96 Medicare Part D claims for 23 beneficiaries, against an average of 496 among the 1,036 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.
Most prescribed
- Jakafi12 claims
- Acyclovir11 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 4 group practices
- City OF Hope Medical FoundationIrvine, CA
- Regents OF The University OF CaliforniaSan Francisco, CA
- Ucsf Medical Group Business ServicesBerkeley, CA
- University OF California San FranciscoSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tamer Adel Othman among 175 hematology (internal medicine) physician records in California
Tamer Adel Othman, M.D. is one of 175 hematology (internal medicine) physician records with a practice address in California. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 92% of them.
- NPI issued2017 · 92% of these records are older, 6% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 78% of these records are
- Graduated2017 · median 2006 among the 135 with a school on file
- Record last updated2025 · 34% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology (Internal Medicine) Physician providers in California
There are 175 hematology (internal medicine) physician records in California.
All 175 in California → Every provider in Irvine → Hematology (Internal Medicine) Physician nationwide →
The 8 hematology (internal medicine) physician records with the nearest ZIP codes
- Julio Alvarenga Thiebaud, M.D.Irvine, CA 926181457770497
- Azra Borogovac, M.D.Irvine, CA 926181164818639
- Krisstina Gowin, D.O.Irvine, CA 926181477845089
- Benjamin Heyman, M.D.Irvine, CA 926181982995809
- Eduardo Fernandez Hernandez, MDNewport Beach, CA 926631104288125
- Esther Fermin, MDVictorville, CA 923951013018514
- Zahra Pakbaz, MDOrange, CA 928681942463377
- Richard Vanetten, MDOrange, CA 928681760536841
Common questions
What is Tamer Adel Othman, M.D.'s NPI number?
Tamer Adel Othman, M.D.'s National Provider Identifier (NPI) is 1316471980, issued on Apr 20, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Tamer Adel Othman, M.D. located?
The NPPES record lists a practice address at 1000 Fivepoint, Irvine, CA, 92618. Phone: (800) 826-4673. Providers update this record themselves, so call before visiting.
How can I verify Tamer Adel Othman, M.D.'s license?
NPPES lists California license number A158324, 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 Tamer Adel Othman, M.D. prescribe under Medicare Part D?
In 2024, Tamer Adel Othman, M.D. had 96 Medicare Part D claims for 23 beneficiaries; the average among hematology (internal medicine) physician prescribers was 496. 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.