Peter Wayne Marks, MD

Primary specialty

Medical Oncology PhysicianTaxonomy code 207RX0202X

License

044140 Issued in CT

Practice address

800 Howard Ave
Yale Physicians BLDG
New Haven, CT 06519-1369

Phone

(203) 785-2140

Fax

(203) 785-6414

NPI assigned

Jun 26, 2006

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

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": "1151280000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1366479412",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "300 GEORGE ST",
            "address_2": "PO BOX 9805",
            "city": "NEW HAVEN",
            "state": "CT",
            "postal_code": "065360805",
            "telephone_number": "203-785-7998",
            "fax_number": "203-785-6414"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "800 HOWARD AVE",
            "address_2": "YALE PHYSICIANS BLDG",
            "city": "NEW HAVEN",
            "state": "CT",
            "postal_code": "065191369",
            "telephone_number": "203-785-2140",
            "fax_number": "203-785-6414"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MARKS",
        "first_name": "PETER",
        "middle_name": "WAYNE",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-06-26",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RH0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology",
            "state": "CT",
            "license": "004140",
            "primary": false
        },
        {
            "code": "207RX0202X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Medical Oncology",
            "state": "CT",
            "license": "044140",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• John-Tyler Markette, COUNSELING
• Melissa Anne Markowitz, MD
• Andrea S. Markowski-Marino, PA
• Asher Marks, MD
• Laverne Diane Marks, PHD.
• Susan W Marlatt, M.D.
• Karen Marlett, PA-C
• Joanna Elizabeth Marlowe, PA-C
• Richard A Marottoli, MD
• Jillian Lee Marousek, M.D.

• Medical Oncology Physician in New Haven, CT
• Providers in New Haven, CT by specialty
• Medical Oncology Physician in Connecticut

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; 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.