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Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Harry B. Matossian

Ambulatory Surgical Clinic/Center in Ukiah, CA · enumerated 2005 · authorized official Harry Matossian, Owner.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1003814229

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Registry record

Entity type Organization (Type 2)
Legal business name Harry B. Matossian
Practice address 234 Hospital Dr, Ukiah, CA, 95482
Phone (707) 462-3190
Fax (707) 462-4647
Enumeration date Jul 12, 2005
Last updated in NPPES Sep 23, 2014

Taxonomy & classification

261QA1903X Ambulatory Surgical Clinic/Center Ambulatory Health Care Facilities · License 1100514 (CA) Primary

Authorized official

Name Harry Matossian
Title Owner
Phone (707) 462-3190

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

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.

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Frequently asked questions

What type of organization is Harry B. Matossian?
Harry B. Matossian is registered in NPPES as a Ambulatory Surgical Clinic/Center (its primary provider taxonomy).
What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-09-23.