William Michael Whalen II, M.D.

Primary specialty

Pulmonary Disease PhysicianTaxonomy code 207RP1001X

License

273430 Issued in MA

Practice address

55 Lake Ave N
Worcester, MA 01655-0002

Phone

(508) 334-1975

NPI assigned

May 26, 2015

Sex

Male

Sole proprietor

Yes

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

Enrolled in MA, NY2 enrollments

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 2

Specialty

Pulmonary DiseaseAlso: Critical Care (Intensivists)

Education

Other, 2015

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Umass Memorial Medical Group IncGroup PAC ID 4284539891, 2,494 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Umass Memorial Medical Center/University Campus Hospital, Worcester, MA, CCN 220163
• Umass Memorial Health - Harrington Hospital Hospital, Southbridge, MA, CCN 220019
• Umass Memorial Healthalliance Hospitals Hospital, Leominster, MA, CCN 220001

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Networks

• Healthfirst Medicare Network H5989
• Healthfirst Medicare Network H9678
• Healthfirst Medicare Network H3359
• Healthfirst Medicare Network H1722

Interoperability endpoints

• Direct secure messaging: wmw9004@direct.nyp.org

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.

• Umass Memorial Medical Group Inc

  • Internal Medicine Physician
  • Worcester, MA
  • NPI 1760445373
  Medicare reassignment Care Compare group NPD
• Kings Physician Services, PC

  • Diagnostic Radiology Physician
  • Brooklyn, NY
  • NPI 1083045090
  Medicare reassignment NPD
• Lawrence Medical Associates, PC

  dba NewYork-Presbyterian Medical Group/Westchester

  • Internal Medicine Physician
  • Yorktown Heights, NY
  • NPI 1023257441
  Medicare reassignment NPD
• New York Gracie Square Hospital Inc

  • Psychiatric Hospital
  • New York, NY
  • NPI 1215911946
  Medicare reassignment NPD
• Weill Medical College of Cornell

  dba Pulmonary

  • Pulmonary Disease Physician
  • New York, NY
  • NPI 1285742122
  Medicare reassignment NPD
• Umass Memorial Medical Group, Inc.

  dba Urgent Care Express at Harrington

  • Urgent Care Clinic/Center
  • Oxford, MA
  • NPI 1982381018
  NPD
• Kings Physician Services, PC

  dba Kings Emergency Physician Services

  • Emergency Medicine Physician
  • Brooklyn, NY
  • NPI 1326698879
  NPD
• Lawrence Medical Associates, PC

  dba Newyork-Presbyterian Medical Group/Westchester

  • Multi-Specialty Clinic/Center
  • Yorktown Heights, NY
  • NPI 1184115479
  NPD
• Lawrence Medical Associates, PC

  dba NewYork-Presbyterian Medical Group/Westchester ED

  • Emergency Medicine Physician
  • Bronxville, NY
  • NPI 1497260806
  NPD
• Weill Medical College of Cornell

  • Cardiovascular Disease Physician
  • New York, NY
  • NPI 1144729385
  NPD
• Umass Memorial Medical Center, Inc.

  • General Acute Care Hospital
  • Worcester, MA
  • NPI 1831151455
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Umass Memorial Health-Harrington Hospital Inc

  • General Acute Care Hospital
  • Southbridge, MA
  • NPI 1790780047
  Care Compare affiliation
• Umass Memorial Healthalliance Clinton Hospital Inc

  • General Acute Care Hospital
  • Leominster, MA
  • NPI 1013995133
  Care Compare affiliation
• Umass Memorial Healthalliance Clinton Hospital Inc

  • Psychiatric Hospital Unit
  • Clinton, MA
  • NPI 1285171934
  Care Compare affiliation
• Umass Memorial Medical Center, Inc.

  • General Acute Care Hospital
  • Worcester, MA
  • NPI 1831151455
  Care Compare affiliation

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

{
    "created_epoch": "1432598400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1749081600000",
    "number": "1912386871",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 415348",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "022415348",
            "telephone_number": "800-225-8885"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "55 LAKE AVE N",
            "city": "WORCESTER",
            "state": "MA",
            "postal_code": "016550002",
            "telephone_number": "508-334-1975"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "119 Belmont St",
            "address_purpose": "LOCATION",
            "city": "Worcester",
            "state": "MA",
            "postal_code": "016052903",
            "country_code": "US",
            "telephone_number": "508-334-1975",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "WHALEN",
        "first_name": "WILLIAM",
        "middle_name": "MICHAEL",
        "name_suffix": "II",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2015-05-26",
        "last_updated": "2025-06-05",
        "certification_date": "2025-06-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Critical Care Medicine",
            "state": "MA",
            "license": "273430",
            "primary": false
        },
        {
            "code": "207RP1001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Pulmonary Disease",
            "state": "MA",
            "license": "273430",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Alyssa Whalen
• Felicia Lee Whalen
• Giles F Whalen, M.D.
• Jessica Whalen
• Mary B Whalen, CNP
• Paul D. Whaley, CRNA
• Allison Whalin, AGCNS-BC
• Michael Whalley, PHARMD
• Amber Wheaton
• Celia Wheaton

• Pulmonary Disease Physician in Worcester, MA
• Providers in Worcester, MA by specialty
• Pulmonary Disease Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 5, 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.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.