Catherine Anne Riordan, MD

Primary specialty

Pediatrics PhysicianTaxonomy code 208000000X

License

80757 Issued in MA

Practice address

421 Chandler St
Worcester, MA 01602-2915

Phone

(508) 752-4511

Fax

(508) 797-4729

NPI assigned

Jun 8, 2005

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

Other identifiers 1

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: Yes

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

All facility ownership & control disclosures 1

Facilities whose Medicare enrollment lists this provider’s PECOS associate ID as an owner or managing party.

Owned or controlled facilities with NPI records 1

Facilities whose Medicare enrollment lists this provider as an owner, officer, director or managing party.

• Pernet Family Health Service, Inc.

  • Home Health Agency
  • Worcester, MA
  • NPI 1588665541

  Corporate Director

  CMS ownership

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.

• Chandler Pediatrics

  • Pediatrics Physician
  • Worcester, MA
  • NPI 1053319905
  NPD (past)

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

{
    "created_epoch": "1118188800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1952305997",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "421 CHANDLER ST",
            "city": "WORCESTER",
            "state": "MA",
            "postal_code": "016022915",
            "telephone_number": "508-752-4511",
            "fax_number": "508-797-4729"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "421 CHANDLER ST",
            "city": "WORCESTER",
            "state": "MA",
            "postal_code": "016022915",
            "telephone_number": "508-752-4511",
            "fax_number": "508-797-4729"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "RIORDAN",
        "first_name": "CATHERINE",
        "middle_name": "ANNE",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2005-06-08",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "MA",
            "license": "80757",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "9774343",
            "state": "MA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Rebekah L Riley
• Jamie Miyoko Rinaldi, PA-C
• Robert Joseph Rinaldi III, MD
• Rosa Isabel Rincon - Rivero, M.D.
• Dominique Rinfret
• Kathryn Riordan
• Alize Rios
• Eddy Caleb Rios, MD
• Pamela S Rios
• Zulimar Rios

• Pediatrics Physician in Worcester, MA
• Providers in Worcester, MA by specialty
• Pediatrics Physician in Massachusetts

• 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.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; facility enrollments, owners and changes of ownership; Provider of Services certification data; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.