Rupert Roupen Horoupian, MD
Surgery Physician · Oakland, CA
Rupert Roupen Horoupian, MD is a surgery physician with a practice address in Oakland, California, and NPI 1184686156, issued on Apr 5, 2006. Check the license (California G84866, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Rupert Roupen Horoupian
- Credential
- MD
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- G84866 CA
Self-reported in NPPES; status is on the state search - Practice location
- 365 Hawthorne Ave, Oakland, CA 94609
- Phone
- (510) 465-5523
- Enumerated
- Apr 5, 2006
- Record last updated
- Feb 7, 2025
- Fax
- (510) 832-6061
- Medicare enrollment
- Enrolled (PECOS I20041112000962); accepts Medicare assignment
- Medical or professional school
- University Of Maryland School Of Medicine, 1993
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 3,118 in California → Look up another NPI →
Also registered at 365 Hawthorne Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Anderson, MDCardiovascular Disease Physician1780613380
- Miranda Bassilios, PA CPhysician Assistant1609831114
- Edward Blumenstock, MDObstetrics & Gynecology Physician1235156738
- Gregory Broderick-Villa, MDSurgery Physician1376571562
- John Chiu, MDInterventional Cardiology Physician1629007000
- Stephen Etheredge, MDVascular Surgery Physician1770694101
Verify Rupert Roupen Horoupian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G84866Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
39% fewer Medicare Part D claims than the average surgery physician in 2024
89 Medicare Part D claims for 47 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. 26 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen21 claims
- Ibuprofen20 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.
Industry payments in 2024: $2,745.12
21 payments; by number, the most common kind was food and beverage; the largest payer was Applied Medical Resources Corporation. The 17,103 providers of this specialty with any payment received $3,513.80 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Bass Medical GroupAlamo, CA
- Sutter Bay Medical FoundationOakland, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rupert Roupen Horoupian among 3,118 surgery physician records in California
Rupert Roupen Horoupian, MD is one of 3,118 surgery physician records with a practice address in California. 75% 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, 55% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1993 · median 2003 among the 1,901 with a school on file
- Record last updated2025 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in California
There are 3,118 surgery physician records in California.
All 3,118 in California → Every provider in Oakland → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- David Blumberg, MDOakland, CA 946091295890440
- Gregory Broderick-Villa, MDOakland, CA 946091376571562
- Kenneth Chang, M.D.Oakland, CA 946091952544355
- Jon Greif, D.O.Oakland, CA 946091306958095
- Diane Kwan, M.D.Oakland, CA 946091992913859
- Collin Mbanugo, M.D.Oakland, CA 946091134271471
- Oleg Merzlikin, MDOakland, CA 946091568760643
- Bruce Moorstein, MDOakland, CA 946091457359515
Common questions
What is Rupert Roupen Horoupian, MD's NPI number?
Rupert Roupen Horoupian, MD's National Provider Identifier (NPI) is 1184686156, issued on Apr 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Rupert Roupen Horoupian, MD located?
The NPPES record lists a practice address at 365 Hawthorne Ave, Oakland, CA, 94609. Phone: (510) 465-5523. Providers update this record themselves, so call before visiting.
How can I verify Rupert Roupen Horoupian, MD's license?
NPPES lists California license number G84866, 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 Rupert Roupen Horoupian, MD prescribe under Medicare Part D?
In 2024, Rupert Roupen Horoupian, MD had 89 Medicare Part D claims for 47 beneficiaries; the average among surgery physician prescribers was 147. 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.