Louis S Liou, M.D., PH.D.

Primary specialty

Urology PhysicianTaxonomy code 208800000X

License

216911 Issued in MA

Practice address

1493 Cambridge St
Cambridge, MA 02139-1047

Phone

(617) 665-3590

NPI assigned

Feb 3, 2006

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

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

Urology

Education

Boston University School of Medicine, 1996

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

Emerson Practice Associates, IncGroup PAC ID 8123188117, 247 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Emerson Hospital - Hospital, W Concord, MA, CCN 220084
• Milford Regional Medical Center Hospital, Milford, MA, CCN 220090

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine, Doctor of Philosophy

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://fhir4.healow.com/fhir/r4/HHIGDD/Endpoint/HHIGDD
• Direct secure messaging: liou.louis.epa@direct.partners.masshiway.net

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.

• Aoa Urological Associates LLC

  • Urology Physician
  • Boston, MA
  • NPI 1922802438
  Medicare reassignment NPD Authorized official
• Emerson Practice Associates, Inc.

  • Internal Medicine Physician
  • Concord, MA
  • NPI 1508020199
  Medicare reassignment Care Compare group NPD
• Umass Memorial Medical Group Inc

  • Internal Medicine Physician
  • Worcester, MA
  • NPI 1760445373
  Medicare reassignment Care Compare group NPD
• Lahey Clinic, Inc

  • Internal Medicine Physician
  • Peabody, MA
  • NPI 1063447316
  Medicare reassignment NPD
• Lahey Clinic, Inc.

  • Internal Medicine Physician
  • Burlington, MA
  • NPI 1538194980
  Medicare reassignment NPD
• Milford Regional Physician Group, Inc.

  • Internal Medicine Physician
  • Milford, MA
  • NPI 1902856024
  Medicare reassignment NPD
• Pratt Urology Associates, Inc

  • Urology Physician
  • Boston, MA
  • NPI 1497795025
  Medicare reassignment NPD
• Steward Medical Group, Inc

  • Specialist
  • Watertown, MA
  • NPI 1629398219
  Medicare reassignment NPD
• Cambridge Public Health Commission

  • General Acute Care Hospital
  • Cambridge, MA
  • NPI 1932313228
  Medicare reassignment
• Milford Regional Physician Group, Inc.

  • Sports Medicine (Family Medicine) Physician
  • Medway, MA
  • NPI 1508681321
  NPD
• Steward Medical Group, Inc

  • Specialist
  • Brighton, MA
  • NPI 1356654495
  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.

• Emerson Hospital

  • General Acute Care Hospital
  • Concord, MA
  • NPI 1922103357
  Care Compare affiliation
• Umass Memorial Health-Milford Regional Medical Center Inc

  • General Acute Care Hospital
  • Milford, MA
  • NPI 1477527497
  Care Compare affiliation

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

{
    "created_epoch": "1138924800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1756857600000",
    "number": "1346212404",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1493 CAMBRIDGE ST",
            "city": "CAMBRIDGE",
            "state": "MA",
            "postal_code": "021391047",
            "telephone_number": "617-665-3590"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1493 CAMBRIDGE ST",
            "city": "CAMBRIDGE",
            "state": "MA",
            "postal_code": "021391047",
            "telephone_number": "617-665-3590"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "115 Water St Ste 104",
            "address_purpose": "LOCATION",
            "city": "Milford",
            "state": "MA",
            "postal_code": "017573015",
            "country_code": "US",
            "telephone_number": "508-482-5411",
            "fax_number": "508-482-5417",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "41 Mall Rd",
            "address_purpose": "LOCATION",
            "city": "Burlington",
            "state": "MA",
            "postal_code": "018051047",
            "country_code": "US",
            "telephone_number": "781-744-8000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "LIOU",
        "first_name": "LOUIS",
        "middle_name": "S",
        "credential": "M.D., PH.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-02-03",
        "last_updated": "2025-09-03",
        "certification_date": "2025-09-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208800000X",
            "taxonomy_group": "",
            "desc": "Urology",
            "state": "MA",
            "license": "216911",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "2013592",
            "state": "MA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Addison Lindley, LICSW
• Ann Blakely Lindsay, RN
• John Lindsay
• Gregory Lines, M.D.
• Katerina Vakana Liong, MD
• Erica Lynn Lipchin, PA-C
• Jamie Lipman
• Katherine F Lipman, LICSW, MSW
• Nancy E Lipman, LIC. AC.
• William Lipman, MD

• Urology Physician in Cambridge, MA
• Providers in Cambridge, MA by specialty
• Urology Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 3, 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.