Onica Leigh Washington, MD, PHD

Primary specialty

Nephrology PhysicianTaxonomy code 207RN0300X

License

1014793 Issued in MA

Practice address

55 Lake Ave N
Worcester, MA 01655-0002

Phone

(508) 334-3155

NPI assigned

Mar 30, 2018

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

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

Specialty

NephrologyAlso: Geriatric Medicine

Education

Medical University of South Carolina College of Medicine, 2018

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

• DaVita PDI Worcester Dialysis facility, Worcester, MA, CCN 222564
• FMC - Freedom Center of Worcester Dialysis facility, Worcester, MA, CCN 222590
• Vna Care Network Home health agency, Worcester, MA, CCN 227098
• Umass Memorial Medical Center/University Campus Hospital, Worcester, MA, CCN 220163
• Milford Regional Medical Center Hospital, Milford, MA, CCN 220090
• Umass Memorial Healthalliance Hospitals Hospital, Leominster, MA, CCN 220001
• Umass Memorial Health - Harrington Hospital Hospital, Southbridge, MA, CCN 220019

Merit-based Incentive Payment System (MIPS)

Final score

100 of 100Reported as apm

Quality

82.98

Promoting interoperability

100

Improvement activities

40

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine, Doctor of Philosophy

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.

• Umass Memorial Medical Group Inc

  • Internal Medicine Physician
  • Worcester, MA
  • NPI 1760445373
  Medicare reassignment Care Compare group NPD
• Umass Memorial Medical Group, Inc.

  • Urgent Care Clinic/Center
  • Oxford, MA
  • NPI 1982381018
  NPD

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

• Bio-Medical Applications of Massachusetts, Inc.

  • End-Stage Renal Disease (ESRD) Treatment Clinic/Center
  • Worcester, MA
  • NPI 1497125678

  Dialysis facility

  Care Compare affiliation Name & address match
• Physicians Dialysis Acquisitions Inc

  • End-Stage Renal Disease (ESRD) Treatment Clinic/Center
  • Worcester, MA
  • NPI 1346374436

  Dialysis facility

  Care Compare affiliation Name & address match
• Umass Memorial Health-Harrington Hospital Inc

  • General Acute Care Hospital
  • Southbridge, MA
  • NPI 1790780047
  Care Compare affiliation
• Umass Memorial Health-Milford Regional Medical Center Inc

  • General Acute Care Hospital
  • Milford, MA
  • NPI 1477527497
  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
• Vna Care Network, Inc.

  • Home Health Agency
  • Worcester, MA
  • NPI 1922002286
  Care Compare affiliation

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

{
    "created_epoch": "1522368000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1782086400000",
    "number": "1508362427",
    "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": "508-334-3155"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "119 Belmont St",
            "address_purpose": "LOCATION",
            "city": "Worcester",
            "state": "MA",
            "postal_code": "016052903",
            "country_code": "US",
            "telephone_number": "508-334-3155",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "291 Lincoln St",
            "address_purpose": "LOCATION",
            "city": "Worcester",
            "state": "MA",
            "postal_code": "016053643",
            "country_code": "US",
            "telephone_number": "508-334-6251",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "WASHINGTON",
        "first_name": "ONICA",
        "middle_name": "LEIGH",
        "name_prefix": "Dr.",
        "credential": "MD, PHD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2018-03-30",
        "last_updated": "2026-06-22",
        "certification_date": "2026-06-22",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RN0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Nephrology",
            "state": "MA",
            "license": "1014793",
            "primary": true
        },
        {
            "code": "207RG0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Geriatric Medicine",
            "state": "MA",
            "license": "1014793",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "110138136A",
            "state": "MA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Hena Waseem, M.D.
• Jessica Wasgatt, B.S.
• Katelyn Marie Claire Wasgatt, CCC-A
• Antonio Washington
• Autumn Washington
• Valerie Washington
• Wahid Y Wassef, M.D.
• Sareena Wassmer
• Shauna Nora Wassmus, MD
• Passy Muaua Wasso

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

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 22, 2026; 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.