Active NPI
Nicholas Ronald Gregorio, MD
- Psychiatry Physician
- Modesto, CA
National Provider Identifier
1497382998
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Psychiatry Physician
- License
- A200776
- Practice address
- 500 N 9TH St
Modesto, CA 95350-5814 - Phone
- (209) 558-4598
- NPI assigned
- Mar 24, 2020
- Sex
- Male
- Sole proprietor
- Yes
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Psychiatry Physician | 2084P0800X | A200776 | CA | Primary |
| Forensic Psychiatry Physician | 2084F0202X | A200776 | CA |
Addresses
Primary practice location
500 N 9TH St
Modesto, CA 95350-5814
Mailing address
1113 Arc Way
Modesto, CA 95350-5801
Phone (862) 579-8137
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in NY
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 1
| Enrollment ID | State | Provider type | PAC ID | Details |
|---|---|---|---|---|
| I20240613000356 | NY | Order and Referring Only - Psychiatry | 2062954423 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| A200776 | CA | MD | Forensic Psychiatry Physician |
Networks
- Healthfirst Medicare Network H9678
- Healthfirst Medicare Network H3359
- Healthfirst Medicare Network H5989
- Healthfirst Medicare Network H1722
Interoperability endpoints
- ngregorio4039024@nychhc.direct-ci.com
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1585008000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1789948800000",
"number": "1497382998",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1113 ARC WAY",
"city": "MODESTO",
"state": "CA",
"postal_code": "953505801",
"telephone_number": "862-579-8137"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "500 N 9TH ST",
"city": "MODESTO",
"state": "CA",
"postal_code": "953505814",
"telephone_number": "209-558-4598"
}
],
"practiceLocations": [],
"basic": {
"last_name": "GREGORIO",
"first_name": "NICHOLAS",
"middle_name": "RONALD",
"credential": "MD",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2020-03-24",
"last_updated": "2026-09-21",
"certification_date": "2026-09-21",
"status": "A"
},
"taxonomies": [
{
"code": "2084P0800X",
"taxonomy_group": "193400000X SINGLE SPECIALTY GROUP",
"desc": "Psychiatry & Neurology, Psychiatry",
"state": "CA",
"license": "A200776",
"primary": true
},
{
"code": "2084F0202X",
"taxonomy_group": "",
"desc": "Psychiatry & Neurology, Forensic Psychiatry",
"state": "CA",
"license": "A200776",
"primary": false
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Modesto, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 21, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.