Gabriel Alfonso Nieves, MD

Primary specialty

Psychiatry PhysicianTaxonomy code 2084P0800X

License

101446 Issued in GA

Practice address

10 Dumas LN
Merrimack, NH 03054-2431

Phone

(787) 637-9428

NPI assigned

Apr 13, 2021

Last updated

Sep 16, 2026By the provider in NPPES

Sex

Male

Sole proprietor

Yes

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 4

Addresses

Electronic endpoints 2

Medicare fee-for-service enrollment

Enrolled in GA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Department of Behavioral Health and Developmental Disabilities

  dba Central State Hospital

  • Psychiatric Hospital
  • Milledgeville, GA
  • NPI 1902030307
  Medicare reassignment NPD
• Department of Behavioral Health & Developmental Disabilities, Ga

  dba Southwest Community Clinic

  • Neurology Physician
  • Thomasville, GA
  • NPI 1174942684
  NPD
• Department of Behavioral Health and Developmental Disabilities

  dba East Central Regional Hospital

  • Psychiatric Hospital
  • Augusta, GA
  • NPI 1093046005
  NPD

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1618272000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1789516800000",
    "number": "1275113318",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 24449",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100870589",
            "telephone_number": "833-351-8255"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "10 DUMAS LN",
            "city": "MERRIMACK",
            "state": "NH",
            "postal_code": "030542431",
            "telephone_number": "787-637-9428"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "109 W 27th St Rm 5S",
            "address_purpose": "LOCATION",
            "city": "New York",
            "state": "NY",
            "postal_code": "100016208",
            "country_code": "US",
            "telephone_number": "833-351-8255",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "4550 N Point Pkwy Fl 2",
            "address_purpose": "LOCATION",
            "city": "Alpharetta",
            "state": "GA",
            "postal_code": "300222445",
            "country_code": "US",
            "telephone_number": "833-351-8255",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "150 Riverside Pkwy Ste 115",
            "address_purpose": "LOCATION",
            "city": "Fredericksburg",
            "state": "VA",
            "postal_code": "224061094",
            "country_code": "US",
            "telephone_number": "833-351-8255",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "NIEVES",
        "first_name": "GABRIEL",
        "middle_name": "ALFONSO",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2021-04-13",
        "last_updated": "2026-09-16",
        "certification_date": "2026-09-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "VA",
            "license": "0101289937",
            "primary": false
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "NY",
            "license": "343110",
            "primary": false
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "PR",
            "license": "024175",
            "primary": false
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "GA",
            "license": "101446",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "118gnieves@uccaribe.edu",
            "affiliation": "N",
            "endpointDescription": "Email adress",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "CSV",
            "contentTypeDescription": "CSV",
            "address_1": "Bosque del lago bc-22",
            "city": "Trujillo Alto",
            "state": "PR",
            "country_code": "US",
            "postal_code": "00976",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "118gnieves@uccaribe.edu",
            "affiliation": "N",
            "endpointDescription": "Email Adress",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "CSV",
            "contentTypeDescription": "CSV",
            "address_1": "10 Dumas Ln",
            "city": "Merrimack",
            "state": "NH",
            "country_code": "US",
            "postal_code": "030542431",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Ned T. Bitsack, D.D.S.
• Sandra Netto-Marceau, LICSW
• Holly Neves, APRN
• Nextstep Behavioral Services
• Patrick Phong Nguyen, DO
• Cassandra Nimblett
• Wei Ning, ACUPUNCTURIST
• Julianne S Noonan, ARNP
• Northeast Endodontic Specialists, PA
• Northstar Endodontic Partners PLLC

• Psychiatry Physician in Merrimack, NH
• Providers in Merrimack, NH by specialty
• Psychiatry Physician in New Hampshire

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 16, 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.

Verify at the official NPI Registry.