Nilmar Nieves Ortiz, MD

Primary specialty

Obstetrics & Gynecology PhysicianTaxonomy code 207V00000X

License

21617 Issued in PR

Practice address

550 Calle Sergio Cuevas Bustamante Ave Domenech
San Juan, PR 00918

Phone

(787) 758-8383

Fax

(787) 763-9758

NPI assigned

Sep 22, 2016

Last updated

Nov 4, 2025By the provider in NPPES

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in PR

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

Specialty

Obstetrics/Gynecology

Education

Other, 2015

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

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.

• Dfem LLC

  • Obstetrics & Gynecology Physician
  • San Juan, PR
  • NPI 1386265890
  NPD (past)
• Gyne-OB Medical LLC

  • Obstetrics Physician
  • San Juan, PR
  • NPI 1821464108
  NPD (past)

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

{
    "created_epoch": "1474502400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1762214400000",
    "number": "1518416239",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 364708",
            "city": "SAN JUAN",
            "state": "PR",
            "postal_code": "009364708",
            "telephone_number": "787-758-8383",
            "fax_number": "787-763-9758"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "550 CALLE SERGIO CUEVAS BUSTAMANTE AVE DOMENECH",
            "city": "SAN JUAN",
            "state": "PR",
            "postal_code": "00918",
            "telephone_number": "787-758-8383",
            "fax_number": "787-763-9758"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NIEVES ORTIZ",
        "first_name": "NILMAR",
        "name_prefix": "Ms.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2016-09-22",
        "last_updated": "2025-11-04",
        "certification_date": "2025-11-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "PR",
            "license": "21617",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Aleida G Nieves Martinez, MD
• Ileana Marie Nieves Martinez
• Kathleen Nieves Mas, MD
• Amairy Nieves Medina, BSN
• Marie Lisabeth II Nieves Nieves, MS-SLP
• Niosiris Nieves Ortiz
• Omar Nieves Ortiz, M.D.
• Indira Nieves Quiles, MD, MPH
• Daniela Nieves Rivera, M.A.
• Francheska Minelly Nieves Rodriguez, MD

• Obstetrics & Gynecology Physician in San Juan, PR
• Providers in San Juan, PR by specialty
• Obstetrics & Gynecology Physician in Puerto Rico

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 4, 2025; 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.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.