Irene J. Buno-Brion, M.D.
Dermatology Physician · San Marcos, CA
Irene J. Buno-Brion, M.D. is a dermatology physician with a practice address in San Marcos, California, and NPI 1497704381, issued on May 8, 2006. Check the license (California G83987, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Irene J. Buno-Brion
- Credential
- M.D.
- Primary taxonomy
- Dermatology Physician 207N00000X
- License numbers
- G83987 CA
MD00036768 WA
Self-reported in NPPES; status is on the state search - Practice location
- 400 Craven RD, San Marcos, CA 92078
- Phone
- (800) 290-5000
- Enumerated
- May 8, 2006
- Record last updated
- Mar 7, 2023
- Medicaid ID
- 8239014 WA
- Medicare enrollment
- Enrolled (PECOS I20160929002181); accepts Medicare assignment
- Medical or professional school
- University Of Colorado School Of Medicine, Denver, 1993
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 2,083 in California → Look up another NPI →
Also registered at 400 Craven RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tracy Abrams, R.N.Registered Nurse1073991261
- Eric Adiarte, M.D.Obstetrics & Gynecology Physician1902038284
- Shreya Aiyar, MDPediatrics Physician1922685981
- Najlaa Al-Jibouri, PHARM DPharmacist1447438965
- Jennifer Alexander, RCP, RRTPulmonary Function Technologist Certified Respiratory Therapist1023596442
- Marisa Alunni, M.D.Obstetrics & Gynecology Physician1710298476
Verify Irene J. Buno-Brion in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G83987Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% more Medicare Part D claims than the average dermatology physician in 2024
1,448 Medicare Part D claims for 575 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Fluorouracil191 claims
- Clobetasol Propionate135 claims
- Mupirocin92 claims
- Triamcinolone Acetonide89 claims
- Tacrolimus82 claims
- Ketoconazole76 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 GroupSan Marcos, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Irene J. Buno-Brion among 2,083 dermatology physician records in California
Irene J. Buno-Brion, M.D. is one of 2,083 dermatology 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 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 56% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1993 · median 2006 among the 1,450 with a school on file
- Record last updated2023 · 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 207N00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Dermatology Physician providers in California
There are 2,083 dermatology physician records in California.
All 2,083 in California → Every provider in San Marcos → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Vishakha Sharma, M.D.San Marcos, CA 920781922274737
- Heidi Busch, M.D.Vista, CA 920811467415174
- Steven Emmet, M.D.Solana Beach, CA 920751043391246
- Ruth Gilboa, MDSolana Beach, CA 920751205873197
- Melanie Palm, M.D.Solana Beach, CA 920751821265877
- Rishu Gupta, M.D.Vista, CA 920831942620869
- Joseph Aleshaki, DOSantee, CA 920711548766264
- Humberto Gallego, MDSantee, CA 920711811074404
Common questions
What is Irene J. Buno-Brion, M.D.'s NPI number?
Irene J. Buno-Brion, M.D.'s National Provider Identifier (NPI) is 1497704381, issued on May 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Irene J. Buno-Brion, M.D. located?
The NPPES record lists a practice address at 400 Craven RD, San Marcos, CA, 92078. Phone: (800) 290-5000. Providers update this record themselves, so call before visiting.
How can I verify Irene J. Buno-Brion, M.D.'s license?
NPPES lists California license number G83987, 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 Irene J. Buno-Brion, M.D. prescribe under Medicare Part D?
In 2024, Irene J. Buno-Brion, M.D. had 1,448 Medicare Part D claims for 575 beneficiaries; the average among dermatology physician prescribers was 797. 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.