Stephen J. Clark, M.D., Inc

Stephen J. Clark, M.D., Inc is a healthcare organization registered as Infectious Disease Physician in Arcata, CA, holding Type 2 (organization) NPI 1801938881 since 2007. The authorized official on file is Stephen Clark, President.

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NPI	1801938881
Entity type	Organization (Type 2)
Legal business name	Stephen J. Clark, M.D., Inc
Practice address	3798 JANES RD, SUITE 7, Arcata, CA, 95521
Phone	7078257765
Enumeration date	2007-02-13
Last updated in NPPES	2008-02-18

Authorized official

Name	Stephen Clark
Title	President
Phone	7078257765

Taxonomy & classification

Taxonomy code	Specialty	Primary	License	State
207RI0200X	Infectious Disease Physician	Primary	G86858	CA

Copy-ready billing details

Provider: Stephen J. Clark, M.D., Inc
NPI: 1801938881
Taxonomy: 207RI0200X (Infectious Disease Physician)
Address: 3798 JANES RD, SUITE 7, Arcata, CA, 95521

Providers at this address

NPI	Name	Type	Specialty	Location
1700885977	Oliver Puttler	Individual	Specialist	Arcata, CA
1275513517	Gary Garcia	Individual	Internal Medicine Physician	Arcata, CA
1730120676	Lawrence Senffner	Individual	Internal Medicine Physician	Arcata, CA
1184720740	Sheldon Meshulam	Individual	Gastroenterology Physician	Arcata, CA
1427190495	William S. Sogaard, M.D., Inc	Organization	Internal Medicine Physician	Arcata, CA
1417099466	Northcoast Internal Medicine, A Medical Corporation	Organization	Internal Medicine Physician	Arcata, CA
1982726576	Bay Surgeons Medical Group	Organization	Surgery Physician	Arcata, CA
1861689044	David S Gans MD	Organization	Internal Medicine Physician	Arcata, CA

Verify this record

Cross-check NPI 1801938881 against the authoritative CMS record: view Stephen J. Clark, M.D., Inc 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 2008-02-18. Verify at npiregistry.cms.hhs.gov.

Where is Stephen J. Clark, M.D., Inc located?

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

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2008-02-18.