Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Alden L Stock, M.D.

Q: What is the NPI number for Alden Stock?

The National Provider Identifier (NPI) for Alden Stock is 1821085093, a Type 1 (individual) record in the CMS NPPES registry.

Otolaryngology Physician in New Britain, CT · enumerated 2005.

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

National Provider Identifier

1821085093

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Registry record

Entity type Individual (Type 1)

Name Dr. Alden L Stock

Credential M.D.

Sex Male

Practice address 292 W Main St, Grove Hill Medical Center, New Britain, CT, 06052

Phone (860) 224-2631

Fax (860) 223-4117

Enumeration date Oct 4, 2005

Last updated in NPPES Jul 9, 2007

Taxonomy & licenses

207Y00000X Otolaryngology Physician Allopathic & Osteopathic Physicians · License 023669 (CT) 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
P369874	Other	CT	OXFORD
7734101	Other	CT	CONNECTICARE
010023669CT08	Other	CT	BCBS & BCFP ID SOUTHINGTO
01023669	Other	CT	CIGNA
040009338	Other	CT	RAIL ROAD MEDICARE
481716	Other	CT	AETNA
001236694	Medicaid	CT	-
135482	Other	CT	WELLCARE MEDICARE
010023669CT07	Other	CT	BCBS & BCFP ID NEW BRITAI
060092	Other	CT	HEALTH NET
004214813	Medicaid	CT	-
1255448155	Other	CT	GHMC GROUP NPI ID

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

Where does Alden Stock practice?

The practice location on file with NPPES is in New Britain, CT. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Alden Stock?

The National Provider Identifier (NPI) for Alden Stock is 1821085093, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Kenneth Andrews Otolaryngology Physician · New Britain, CT NPI 1114247798 Alicia Murphy Audiologist · New Britain, CT NPI 1689969875

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.