Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Louis Thayer Merriam, M.D.

Surgery Physician in Berlin, VT · enumerated 2006.

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

National Provider Identifier

1710906136

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Registry record

Entity type Individual (Type 1)

Name Dr. Louis Thayer Merriam

Credential M.D.

Sex Male

Practice address 130 Fisher Rd, Suite 3-1, Berlin, VT, 05602

Phone (802) 225-7039

Enumeration date Jul 18, 2006

Last updated in NPPES Nov 11, 2014

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 212039 (NY) Primary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 042.0012371 (VT) Secondary

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
1020429	Medicaid	VT	-
5372668	Other	NY	AETNA
77L071	Other	NY	EMPIRE BC.BS
01881158	Medicaid	NY	-

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 Louis Merriam's NPI record?

Cross-check NPI 1710906136 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1710906136 active?

Yes, as of the latest NPPES snapshot, NPI 1710906136 is active (record last updated 2014-11-11).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-11-11.