Hamik Ambartsum Martirosyan, MD
Nephrology Physician · Riverside, CA
Hamik Ambartsum Martirosyan, MD is a nephrology physician with a practice address in Riverside, California, and NPI 1316014145, issued on Nov 29, 2006. Check the license (California A74730, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Hamik Ambartsum Martirosyan
- Credential
- MD
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- A74730 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10800 Magnolia Ave, Riverside, CA 92505
- Phone
- (909) 353-2000
- Enumerated
- Nov 29, 2006
- Record last updated
- Dec 1, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20040927001167); accepts Medicare assignment
- Medical or professional school
- Saint Louis University School Of Medicine, 1999
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,468 in California → Look up another NPI →
Also registered at 10800 Magnolia Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Hussein Abdulrassoul, MDOrthopaedic Surgery Physician1972123891
- Kimberly Adams, PA-CMedical Physician Assistant1053522870
- Alfredo Aguiar, PAPhysician Assistant1043368970
- Michael Aguinaldo, M.D.Pediatrics Physician1851531487
- Maria Aguirre, MDPediatrics Physician1295806255
Verify Hamik Ambartsum Martirosyan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A74730Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
26% fewer Medicare Part D claims than the average nephrology physician in 2024
1,085 Medicare Part D claims for 206 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D.
Most prescribed
- Furosemide123 claims
- Potassium Chloride86 claims
- Jardiance83 claims
- Amlodipine Besylate79 claims
- Losartan Potassium62 claims
- Calcitriol59 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: $105.05
1 payment: food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 8,230 providers of this specialty with any payment received $3,091.37 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 one group practice
- Southern California Permanente Medical GroupRiverside, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hamik Ambartsum Martirosyan among 1,468 nephrology physician records in California
Hamik Ambartsum Martirosyan, MD is one of 1,468 nephrology physician records with a practice address in California. 88% 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 10% of them.
- NPI issued2006 · 10% of these records are older, 48% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated1999 · median 2001 among the 1,128 with a school on file
- Record last updated2021 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in California
There are 1,468 nephrology physician records in California.
All 1,468 in California → Every provider in Riverside → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Rizwan Badar, M.D.Riverside, CA 925051073761243
- Arthur Galoustian, MDRiverside, CA 925051487685426
- Naveen Gupta, MDRiverside, CA 925051790979938
- Salam Ishak, M.DRiverside, CA 925051427152842
- Taher Khalil, M.D.Riverside, CA 925051962458752
- Joseph Lee, M.D.Riverside, CA 925051477599579
- Howard Lee, DORiverside, CA 925051932276144
- John Robertson, M.D.Riverside, CA 925051528019536
Common questions
What is Hamik Ambartsum Martirosyan, MD's NPI number?
Hamik Ambartsum Martirosyan, MD's National Provider Identifier (NPI) is 1316014145, issued on Nov 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Hamik Ambartsum Martirosyan, MD located?
The NPPES record lists a practice address at 10800 Magnolia Ave, Riverside, CA, 92505. Phone: (909) 353-2000. Providers update this record themselves, so call before visiting.
How can I verify Hamik Ambartsum Martirosyan, MD's license?
NPPES lists California license number A74730, 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 Hamik Ambartsum Martirosyan, MD prescribe under Medicare Part D?
In 2024, Hamik Ambartsum Martirosyan, MD had 1,085 Medicare Part D claims for 206 beneficiaries; the average among nephrology physician prescribers was 1,465. 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.