Robert Sean Doomun, D.O.
Family Medicine Physician · Yorba Linda, CA
Robert Sean Doomun, D.O. is a family medicine physician with a practice address in Yorba Linda, California, and NPI 1043221898, issued on Aug 10, 2006. Check the license (California 20A7459, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Robert Sean Doomun
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A7459 CA
Self-reported in NPPES; status is on the state search - Practice location
- 18637 Yorba Linda Blvd, Yorba Linda, CA 92886
- Phone
- (714) 790-8600
- Enumerated
- Aug 10, 2006
- Record last updated
- Nov 9, 2022
- Medicare enrollment
- Enrolled (PECOS I20060412000789); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 18637 Yorba Linda Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Edelaine Lucas, NPNurse Practitioner1740772896
- Richard McMillan, M.F.T.Marriage & Family Therapist1487722153
- Hoda Mojazi Amiri, MDEndocrinology, Diabetes & Metabolism Physician1750780367
- Menezha Rahimi, D.O.Family Medicine Physician1568403731
Verify Robert Sean Doomun in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A7459Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
25% fewer Medicare Part D claims than the average family medicine physician in 2024
2,662 Medicare Part D claims for 333 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 66 claims were for opioids.
Most prescribed
- Atorvastatin Calcium169 claims
- Levothyroxine Sodium118 claims
- Amlodipine Besylate113 claims
- Omeprazole112 claims
- Losartan Potassium100 claims
- Tamsulosin Hcl76 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
- Regents OF The University OF CaliforniaOrange, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Robert Sean Doomun among 17,133 family medicine physician records in California
Robert Sean Doomun, D.O. is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1998 · median 2005 among the 10,652 with a school on file
- Record last updated2022 · 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 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
48 family medicine physician records list a practice address in Yorba Linda
They are 48 of the 748 NPPES records with a practice address in Yorba Linda, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Yorba Linda → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Kenneth Birkenstein, M.D.Yorba Linda, CA 928861093710022
- Gregg Denicola, MDYorba Linda, CA 928861164469912
- Roxann Engle, DOYorba Linda, CA 928861710981303
- Fred Hurst, MDYorba Linda, CA 928861114927720
- Maria Hutchinson, DOYorba Linda, CA 928861558349316
- Ana Ivanova, M.D.Yorba Linda, CA 928861104812833
- Angsumarn Luecha, MDYorba Linda, CA 928861023018009
- Daniel May, M.D.Yorba Linda, CA 928861760423917
Common questions
What is Robert Sean Doomun, D.O.'s NPI number?
Robert Sean Doomun, D.O.'s National Provider Identifier (NPI) is 1043221898, issued on Aug 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert Sean Doomun, D.O. located?
The NPPES record lists a practice address at 18637 Yorba Linda Blvd, Yorba Linda, CA, 92886. Phone: (714) 790-8600. Providers update this record themselves, so call before visiting.
How can I verify Robert Sean Doomun, D.O.'s license?
NPPES lists California license number 20A7459, 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 Robert Sean Doomun, D.O. prescribe under Medicare Part D?
In 2024, Robert Sean Doomun, D.O. had 2,662 Medicare Part D claims for 333 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.