Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Larry J. Hartwell, MD

Family Medicine Physician in Lynden, WA · enumerated 2006.

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

National Provider Identifier

1609817238

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Registry record

Entity type Individual (Type 1)

Name Dr. Larry J. Hartwell

Credential MD

Sex Male

Practice address 1610 Grover St, Suite D1, Lynden, WA, 98264

Phone (360) 354-1333

Fax (360) 354-5399

Enumeration date Jun 8, 2006

Last updated in NPPES Jun 15, 2015

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License MD00027434 (WA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
423898006	Other	WA	GROUP HEALTH COOPERATIVE
080147957	Other	WA	RAILROAD MEDICARE
45917	Other	WA	REGENCE BLUESHIELD
0128915	Other	WA	LABOR & INDUSTRIES (REG)
8117749	Medicaid	WA	-
8925026	Other	WA	LABOR & INDUSTRIES (CV0

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

How do I verify Larry Hartwell's NPI record?

Cross-check NPI 1609817238 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1609817238 active?

Yes, as of the latest NPPES snapshot, NPI 1609817238 is active (record last updated 2015-06-15).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-06-15.