Adventist Health Physicians Network

Adventist Health Physicians Network is a healthcare organization registered as Gastroenterology Physician in Ukiah, CA, holding Type 2 (organization) NPI 1164804761 since 2015. The authorized official on file is Arby Nahapetian, President.

✓ Active NPI ✓ Valid NPI checksum

NPI	1164804761
Entity type	Organization (Type 2)
Legal business name	Adventist Health Physicians Network
Practice address	234 HOSPITAL DR, Ukiah, CA, 95482
Phone	7074637425
Enumeration date	2015-06-19
Last updated in NPPES	2025-09-15

Authorized official

Name	Arby Nahapetian
Title	President
Phone	8184098000

Taxonomy & classification

Taxonomy code	Specialty	Primary	License	State
207RG0100X	Gastroenterology Physician	Primary	—	—

Copy-ready billing details

Provider: Adventist Health Physicians Network
NPI: 1164804761
Taxonomy: 207RG0100X (Gastroenterology Physician)
Address: 234 HOSPITAL DR, Ukiah, CA, 95482

Providers at this address

NPI	Name	Type	Specialty	Location
1316945702	Harry Matossian	Individual	Gastroenterology Physician	Ukiah, CA
1003814229	Harry B. Matossian	Organization	Ambulatory Surgical Clinic/Center	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
1174281281	Stacie Bratcher	Individual	Family Nurse Practitioner	Ukiah, CA
1316739501	Bryce Irwin	Individual	Medical Physician Assistant	Ukiah, CA

Verify this record

Cross-check NPI 1164804761 against the authoritative CMS record: view Adventist Health Physicians Network 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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2025-09-15. Verify at npiregistry.cms.hhs.gov.

Where is Adventist Health Physicians Network located?

The practice location on file with NPPES is in Ukiah, CA.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2025-09-15.