Harry Matossian, M.D.
NPI 1316945702 · Gastroenterology Physician · Ukiah, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Harry Matossian, M.D. is a Gastroenterology Physician provider in Ukiah, CA (NPI 1316945702).
Provider details
- NPI number
- 1316945702
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G62323 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
219 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 67 | $156 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 37 | $229 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 36 | $85 |
| Colorectal Cancer Screening; Colonoscopy on Individual at High RiskG0105 | 18 | $161 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 17 | $122 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Famotidine | 45 | 16 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 32 | 32 |
| Pantoprazole Sodium | 29 | 12 |
| Omeprazole | 25 | — |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 17 | 17 |
| Cholestyramine (with Sugar)brand: Cholestyramine | 16 | — |
| Sucralfate |
Practice location
Mailing address
Additional practice locations (1)
- 100 Hospital DrSuite 201Ketchum, ID 83340Phone: (208) 727-8888Fax: (208) 727-8889
Registry dates
- Enumerated
- 2005-07-11
- Last updated
- 2024-08-26
- Certified
- 2024-08-22
Frequently asked questions
- What is Harry Matossian's NPI number?
- Harry Matossian's National Provider Identifier (NPI) is 1316945702, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Harry Matossian's specialty?
- Harry Matossian is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Harry Matossian located?
- Harry Matossian's practice location on file with NPPES is 234 Hospital Dr, Ukiah, CA 95482-4560.
- What is Harry Matossian's phone number?
- The practice phone number listed in the NPPES registry for Harry Matossian is (707) 462-0681.
- Does Harry Matossian accept Medicare?
- Harry Matossian is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Harry Matossian's NPI active?
- Yes — Harry Matossian's NPI (1316945702) is active in the NPPES registry as of the last update on 2024-08-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.