Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Robert Athey Grossman, MD
Surgery Physician in Naples, FL · enumerated 2014.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1639584303
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Robert Athey Grossman
Credential MD
Sex Male
Practice address 311 9th St N Ste 308, Naples, FL, 34102
Phone (239) 624-4650
Fax (239) 624-4651
Enumeration date Jun 21, 2014
Last updated in NPPES Dec 28, 2021
Taxonomy & licenses
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 |
|---|---|---|---|
| 021989100 | Medicaid | FL | - |
| OICY2 | Other | FL | BCBS |
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 Robert Grossman practice?
The practice location on file with NPPES is in Naples, FL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Robert Grossman?
The National Provider Identifier (NPI) for Robert Grossman is 1639584303, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-28.