Harry B. Matossian
Harry B. Matossian is a healthcare organization registered as Ambulatory Surgical Clinic/Center in Ukiah, CA, holding Type 2 (organization) NPI 1003814229 since 2005. The authorized official on file is Harry Matossian, Owner.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1003814229 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | Harry B. Matossian |
| Practice address | 234 HOSPITAL DR, Ukiah, CA, 95482 |
| Phone | 7074623190 |
| Fax | 7074624647 |
| Enumeration date | 2005-07-12 |
| Last updated in NPPES | 2014-09-23 |
Authorized official
| Name | Harry Matossian |
|---|---|
| Title | Owner |
| Phone | 7074623190 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 261QA1903X | Ambulatory Surgical Clinic/Center | Primary | 1100514 | CA |
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| AS1639 | Other | CA | BLUE CROSS OF CALIFORNIA |
| 05-C0001639 | Other | CA | MEDICARE LICENSE NUMBER |
| P00117803 | Other | CA | RAILROAD MEDICARE |
| ZZZH23012 | Other | CA | BLUE SHIELD OF CALIFORNIA |
Copy-ready billing details
Provider: Harry B. Matossian NPI: 1003814229 Taxonomy: 261QA1903X (Ambulatory Surgical Clinic/Center) Address: 234 HOSPITAL DR, Ukiah, CA, 95482
Providers at this address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1316945702 | Harry Matossian | Individual | Gastroenterology Physician | Ukiah, CA |
| 1649384751 | Brian Hauck | Individual | Gastroenterology Physician | Ukiah, CA |
| 1710071774 | Craig Aronchick | Individual | Gastroenterology Physician | Ukiah, CA |
| 1972673895 | Renee Vinyard | Individual | Physician Assistant | Ukiah, CA |
| 1851682850 | Harry B Matossian, M.D. | Organization | Ambulatory Surgical Clinic/Center | Ukiah, CA |
| 1164804761 | Adventist Health Physicians Network | Organization | Gastroenterology Physician | Ukiah, CA |
| 1174281281 | Stacie Bratcher | Individual | Family Nurse Practitioner | Ukiah, CA |
| 1316739501 | Bryce Irwin | Individual | Medical Physician Assistant | Ukiah, CA |
Verify this record
Cross-check NPI 1003814229 against the authoritative CMS record: view Harry B. Matossian on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
What type of organization is Harry B. Matossian?
What is a Type 2 NPI?
Source: CMS NPPES (public data). Snapshot 2026-07-10. Provider record last updated 2014-09-23.