Martina Lydia Krenzer, MD

Primary specialty

Hospitalist PhysicianTaxonomy code 208M00000X

License

84191 Issued in CT

Practice address

5 Perryridge Rd
Greenwich, CT 06830-4608

Phone

(203) 863-3840

Fax

(203) 863-4738

NPI assigned

Mar 24, 2021

Last updated

Sep 24, 2026By 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 CT

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

State licenses

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

{
    "created_epoch": "1616544000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1790208000000",
    "number": "1972189355",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5 PERRYRIDGE RD",
            "city": "GREENWICH",
            "state": "CT",
            "postal_code": "068304608"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5 PERRYRIDGE RD",
            "city": "GREENWICH",
            "state": "CT",
            "postal_code": "068304608",
            "telephone_number": "203-863-3840",
            "fax_number": "203-863-4738"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KRENZER",
        "first_name": "MARTINA",
        "middle_name": "LYDIA",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2021-03-24",
        "last_updated": "2026-09-24",
        "certification_date": "2026-09-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "CT",
            "license": "84191",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Marc S Kowalsky, MD
• Gina Krajeski, MSW
• Scott Jordan Kramer, M.D.
• Katherine A Kraus, LCSW
• Erika Shannon Krauss, D.O.
• Jadwiga Kretowicz, RN, FNP
• Elizabeth Kreuter, PT
• Matthew P. Kusulas, MD
• Laboratory Corporation of America Holdings
• Nayra A. Labrecque, PA-C

• Hospitalist Physician in Greenwich, CT
• Providers in Greenwich, CT by specialty
• Hospitalist Physician in Connecticut

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 24, 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.