Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Richard Gordon Nellis, PA-C
Physician Assistant in Darien, CT · enumerated 2008.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1649438516
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Registry record
Entity type Individual (Type 1)
Name Richard Gordon Nellis
Credential PA-C
Sex Male
Practice address 104 Heights Rd # R103, Darien, CT, 06820
Phone (888) 663-6331
Fax (415) 252-7176
Enumeration date May 28, 2008
Last updated in NPPES Jan 26, 2026
Taxonomy & licenses
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 005341 (CT) Primary
363AM0700X Medical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 027096 (NY) Secondary
363AM0700X Medical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 10468 (MN) Secondary
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 1082853 | Other | - | NCCPA |
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
What is the NPI number for Richard Nellis?
The National Provider Identifier (NPI) for Richard Nellis is 1649438516, a Type 1 (individual) record in the CMS NPPES registry.
Where does Richard Nellis practice?
The practice location on file with NPPES is in Darien, CT. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-01-26.