Organization Active NPI

Martinezfesholdid

  • Infectious Disease Physician
  • San Juan, PR
National Provider Identifier
1629901608
Registry record updated Jun 8, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Infectious Disease PhysicianTaxonomy code 207RI0200X
Legal business name
MARTINEZFESHOLDID
Practice address
371 Calle de Diego
San Juan, PR 00923-3002
Phone
(787) 767-5100
NPI assigned
Jun 8, 2026
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Jun 8, 2026

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

Authorized official

Name
Dr. Jonathan A Martinez Feshold, MDNPI 1851749964
Title
President
Phone
(787) 402-5656

Authorized official NPPES reports the official by name only. The link goes to the one practitioner connected to this organization with that name.

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Infectious Disease PhysicianGroup: 193400000X SINGLE SPECIALTY GROUP 207RI0200X Primary

Addresses

Primary practice location

371 Calle de Diego
San Juan, PR 00923-3002

Mailing address

900 Calle Harvard
San Juan, PR 00927-4810
Phone (787) 402-5656

National Provider Directory

National Provider Directory

Practitioners & affiliated clinicians

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

NPI Registry JSON

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

{
    "created_epoch": "1780876800000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1780876800000",
    "number": "1629901608",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "900 CALLE HARVARD",
            "city": "SAN JUAN",
            "state": "PR",
            "postal_code": "009274810",
            "telephone_number": "787-402-5656"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "371 CALLE DE DIEGO",
            "city": "SAN JUAN",
            "state": "PR",
            "postal_code": "009233002",
            "telephone_number": "787-767-5100"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "MARTINEZFESHOLDID",
        "organizational_subpart": "NO",
        "enumeration_date": "2026-06-08",
        "last_updated": "2026-06-08",
        "certification_date": "2026-06-08",
        "status": "A",
        "authorized_official_last_name": "MARTINEZ FESHOLD",
        "authorized_official_first_name": "JONATHAN",
        "authorized_official_middle_name": "A",
        "authorized_official_title_or_position": "PRESIDENT",
        "authorized_official_telephone_number": "787-402-5656",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "207RI0200X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Internal Medicine, Infectious Disease",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in San Juan, PR

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 8, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.