Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Elizabeth C Clark, M.D.

Infectious Disease Physician in Merrimack, NH · enumerated 2006.

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

National Provider Identifier

1437111796

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Elizabeth C Clark

Credential M.D.

Sex Female

Practice address 399 Daniel Webster Hwy, Merrimack, NH, 03054

Phone (603) 429-1611

Fax (603) 429-1285

Enumeration date Apr 3, 2006

Last updated in NPPES May 18, 2009

Taxonomy & licenses

207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License 8987 (NH) 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
008987	Other	MA	TUFTS HEALTH PLAN
0109211YONH01	Other	NH	ANTHEM BCBS NH
80002773	Medicaid	NH	-

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

How do I verify Elizabeth Clark's NPI record?

Cross-check NPI 1437111796 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1437111796 active?

Yes, as of the latest NPPES snapshot, NPI 1437111796 is active (record last updated 2009-05-18).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-05-18.