NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Northern California Medical Assoc Inc

Gastroenterology Physician in Santa Rosa, CA · enumerated 2019 · authorized official Sally Dewald, Business Services Manager.

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

National Provider Identifier

1689226649

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Northern California Medical Assoc Inc
Practice address 1701 4th St Ste 100, Santa Rosa, CA, 95404
Phone (707) 569-3234
Enumeration date Jul 10, 2019
Last updated in NPPES Jul 10, 2019

Taxonomy & classification

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians Primary
207RI0008X Hepatology Physician Allopathic & Osteopathic Physicians Secondary

Authorized official

Name Sally Dewald
Title Business Services Manager
Phone (707) 525-6485

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 → Validate an NPI →

Frequently asked questions

What type of organization is Northern California Medical Assoc Inc?
Northern California Medical Assoc Inc is registered in NPPES as a Gastroenterology Physician (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.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-07-10.