Maryn Kramerz, FNP-BC

Primary specialty

Family Nurse PractitionerTaxonomy code 363LF0000X

License

RN2330388 Issued in MA

Practice address

725 Concord Ave
Cambridge, MA 02138-1040

Phone

(617) 661-4600

Fax

(617) 547-9170

NPI assigned

Apr 13, 2022

Sex

Female

Sole proprietor

No

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 MA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

State licenses

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 and National Provider Directory roles.

• Reservoir Medical Associates, P.C.

  • Internal Medicine Physician
  • Cambridge, MA
  • NPI 1356399562
  Medicare reassignment NPD

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

{
    "created_epoch": "1649808000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1762905600000",
    "number": "1487396016",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "725 CONCORD AVE",
            "city": "CAMBRIDGE",
            "state": "MA",
            "postal_code": "021381040",
            "telephone_number": "617-661-4600",
            "fax_number": "617-547-9170"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "725 CONCORD AVE",
            "city": "CAMBRIDGE",
            "state": "MA",
            "postal_code": "021381040",
            "telephone_number": "617-661-4600",
            "fax_number": "617-547-9170"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KRAMERZ",
        "first_name": "MARYN",
        "name_prefix": "Mrs.",
        "credential": "FNP-BC",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2022-04-13",
        "last_updated": "2025-11-12",
        "certification_date": "2025-11-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "MA",
            "license": "RN2330388",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Edward M. Kowaloff, M.D.
• Danielle Lauren Kozanno, PSYD
• Joseph Gregory Kozikowski, M.D.
• Katherine Kozitza, MD
• Jeffrey L Kraines, M.D.
• Aviva Krauthammer
• Elizabeth Kravets, P.T.
• Max Kravitz
• Joel Krieg, LICSW
• Maegan Krifchin, MS, OTR/L

• Family Nurse Practitioner in Cambridge, MA
• Providers in Cambridge, MA by specialty
• Family Nurse Practitioner in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 12, 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.