Diane Guardiani, PMHNP (APRN)
Individual provider Active NPI Psychiatric/Mental Health Nurse Practitioner · Niantic, CT
NPI 1316957285 · NPPES record last updated Aug 18, 2026
Key facts
- NPI
- 1316957285
- Entity type
- Individual (NPI type 1)
- Primary specialty
- Psychiatric/Mental Health Nurse Practitioner 363LP0808X
- License
- 2409 (CT)
- Practice address
- 170 Flanders Rd Ste B1
Niantic, CT 06357-1211 - Phone
- (860) 385-6547
- Fax
- (860) 807-1613
- NPI assigned
- Aug 9, 2006
- Sex
- Female
- Sole proprietor
- No
Organizations & group practices 6
Medicare participation
- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
- Medicare enrollment (NPD)
- Yes
- Credentials
- Nurse Practitioner
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 002409 | CT | MD | Optometrist |
| 2409 | CT | MD | Psychiatric/Mental Health Nurse Practitioner |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Conncare Inc | Past | Accepting new patients | |
| Sound Medical Associates, PC | Past | Accepting new patients | |
| Hospital Internists of New London, LLC | Past | Accepting new patients | |
| Grove School | Past |
Accepting new patients | |
| Saybrook Dermatology LLC | Past |
Accepting new patients | |
| Larry Bilker, PH.D., LLC | Past |
Accepting new patients |
Specialties & licenses
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Acute Care Nurse Practitioner | 363LA2100X | 002409 | CT | |
| Psychiatric/Mental Health Nurse Practitioner | 363LP0808X | 2409 | CT | Yes |
Addresses
Primary practice location
170 Flanders Rd Ste B1
Niantic, CT 06357-1211
Mailing address
170 Flanders Rd Ste B1
Niantic, CT 06357-1211
Phone (860) 385-6547
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 1316957285 | Medicaid | CT | |
| 1316957285 | Medicaid | RI |
Other providers in Niantic, CT
- David L Goldschneider
- Alexandra Gozzola
- Judith F. Gruber
- Eileen Grudier
- Guardian Health Center, PA
- Monica Guyot
- Ronald Haas Jr.
- Harmony Health Partners
- Sara Harrington-Doyon
- Nancy Harvey
All providers in Niantic, CT · Psychiatric/Mental Health Nurse Practitioner in Connecticut
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Record last updated by the provider on Aug 18, 2026. Information in NPPES is self-reported and not verified by CMS.
- NUCC Health Care Provider Taxonomy: specialty names.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.