Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Hans J. Ruehsen, M.D.

Hospitalist Physician in Damariscotta, ME · enumerated 2006 · practices at Miles Memorial Hospital Incorporated.

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

National Provider Identifier

1245244524

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Registry record

Entity type Individual (Type 1)

Name Hans J. Ruehsen

Credential M.D.

Sex Male

Practice address 35 Miles Street, Damariscotta, ME, 04543

Phone (207) 563-4268

Fax (207) 563-4103

Enumeration date Jul 29, 2006

Last updated in NPPES Apr 9, 2012

Taxonomy & licenses

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License MD16602 (ME) Primary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 0106602 (ME) 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
424070099	Medicaid	ME	-
P00222027	Other	-	RAILROAD MEDICARE
7193657	Other	-	AETNA NON HMO
3609027	Other	-	AETNA HMO
AA24133	Other	-	HARVARD PILGRIM
061204	Other	ME	ANTHEM

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

What specialty is Hans Ruehsen?

Hans Ruehsen is registered in NPPES with the primary taxonomy of Hospitalist Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

Browse all →

Frank Guarnieri Hospitalist Physician · Damariscotta, ME NPI 1609803238 Miles Memorial Hospital Incorporated General Acute Care Hospital · Damariscotta, ME NPI 1699860106 John Murray Emergency Medicine Physician · Damoriscotta, ME NPI 1902960792 Daniel Bates Emergency Medicine Physician · Damariscotta, ME NPI 1659533792

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-04-09.