Harry Berj Matossian, M.D.
Gastroenterology Physician · Ukiah, CA
Harry Berj Matossian, M.D. is a gastroenterology physician with a practice address in Ukiah, California, and NPI 1316945702, issued on Jul 11, 2005. Check the license (California G62323, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Harry Berj Matossian
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- G62323 CA
Self-reported in NPPES; status is on the state search - Practice location
- 234 Hospital Dr, Ukiah, CA 95482
- Phone
- (707) 462-0681
- Enumerated
- Jul 11, 2005
- Record last updated
- Aug 26, 2024
- Fax
- (707) 462-4647
- Medicaid ID
- 00G623230 CA
- Medicare enrollment
- Enrolled (PECOS I20240906002475); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 234 Hospital Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Craig Aronchick, MDGastroenterology Physician1710071774
- Stacie BratcherFamily Nurse Practitioner1174281281
- Brian Hauck, MDGastroenterology Physician1649384751
- Bryce Irwin, PAMedical Physician Assistant1316739501
- Renee Vinyard, PAPhysician Assistant1972673895
Verify Harry Berj Matossian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G62323Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% fewer Medicare Part D claims than the average gastroenterology physician in 2024
254 Medicare Part D claims for 117 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.
Most prescribed
- Famotidine45 claims
- Sod Sulf-Potass Sulf-Mag Sulf32 claims
- Pantoprazole Sodium29 claims
- Omeprazole25 claims
- Peg-3350 And Electrolytes17 claims
- Cholestyramine16 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 2 group practices
- Sonora Community HospitalSonora, CA
- St Lukes Clinic - Wood River LLCKetchum, ID
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Harry Berj Matossian among 2,140 gastroenterology physician records in California
Harry Berj Matossian, M.D. is one of 2,140 gastroenterology 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1983 · median 2002 among the 1,538 with a school on file
- Record last updated2024 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in Ukiah → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Craig Aronchick, MDUkiah, CA 954821710071774
- Brian Hanson, M.D.Ukiah, CA 954821902916323
- Brian Hauck, MDUkiah, CA 954821649384751
- Adriena Kajdos, M.D.Eureka, CA 955011699725325
- Kusum Stokes, M.D.Eureka, CA 955031386642130
- Sheldon Meshulam, MDArcata, CA 955211184720740
- Razi Arifuddin, MDSanta Rosa, CA 954051124085410
- Richard Auld, MDSanta Rosa, CA 954051144284290
Common questions
What is Harry Berj Matossian, M.D.'s NPI number?
Harry Berj Matossian, M.D.'s National Provider Identifier (NPI) is 1316945702, issued on Jul 11, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Harry Berj Matossian, M.D. located?
The NPPES record lists a practice address at 234 Hospital Dr, Ukiah, CA, 95482. Phone: (707) 462-0681. Providers update this record themselves, so call before visiting.
How can I verify Harry Berj Matossian, M.D.'s license?
NPPES lists California license number G62323, 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 Harry Berj Matossian, M.D. prescribe under Medicare Part D?
In 2024, Harry Berj Matossian, M.D. had 254 Medicare Part D claims for 117 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.