William D Rifkin, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

041451 Issued in CT

Practice address

140 Grandview Ave
Suite #101
Waterbury, CT 06708-2505

Phone

(203) 573-7284

Fax

(203) 573-7031

NPI assigned

Feb 16, 2006

Last updated

Jul 13, 2026By the provider in NPPES

Sex

Male

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

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not 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.

• Alliance Medical Group of Greater Waterbury PC

  • Internal Medicine Physician
  • Middlebury, CT
  • NPI 1750306015
  NPD (past)
• Alliance Medical Group, Inc

  • Internal Medicine Physician
  • Middlebury, CT
  • NPI 1316273071
  NPD (past)
• Maimonides Medical Center Maimonides Primary Care FPP

  • Internal Medicine Physician
  • Brooklyn, NY
  • NPI 1013968593
  NPD (past)

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

{
    "created_epoch": "1140048000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1093789810",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1625 STRAITS TPKE",
            "address_2": "SUITE #201",
            "city": "MIDDLEBURY",
            "state": "CT",
            "postal_code": "067621805",
            "telephone_number": "203-573-9512",
            "fax_number": "203-568-2904"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "140 GRANDVIEW AVE",
            "address_2": "SUITE #101",
            "city": "WATERBURY",
            "state": "CT",
            "postal_code": "067082505",
            "telephone_number": "203-573-7284",
            "fax_number": "203-573-7031"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "RIFKIN",
        "first_name": "WILLIAM",
        "middle_name": "D",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-02-16",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CT",
            "license": "041451",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• A Aziz Richi, M.D.
• Brandon Hereford Ricke, CADC-R, CRM, BBA
• Devondra Riddick
• Robert Riddick, CASE MANAGER
• Ride LLC
• Alicia Riggs
• Rightway ABA of VA LLC
• Christine Riley, RD
• Jason Rinaldi
• Michele Rinaldi Jr., PHARMD

• Internal Medicine Physician in Waterbury, CT
• Providers in Waterbury, CT by specialty
• Internal Medicine Physician in Connecticut

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.