Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
John A. Zolan, M.D.
Neurology Physician in Groton, CT · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1366430357
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Registry record
Entity type Individual (Type 1)
Name John A. Zolan
Credential M.D.
Sex Male
Practice address Naval Branch Health Clinic 1 Wahoo Avenue, Building #449, Groton, CT, 06349
Phone (860) 694-5870
Fax (860) 694-2101
Enumeration date Oct 12, 2005
Last updated in NPPES Jun 26, 2023
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
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.
Frequently asked questions
Where does John Zolan practice?
The practice location on file with NPPES is in Groton, CT. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for John Zolan?
The National Provider Identifier (NPI) for John Zolan is 1366430357, a Type 1 (individual) record in the CMS NPPES registry.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-06-26.