Karen Wiedemann Eldin, MD

Primary specialty

Anatomic Pathology & Clinical Pathology PhysicianTaxonomy code 207ZP0102X

License

293660 Issued in MA

Practice address

75 Francis St
Boston, MA 02115-6110

Phone

(617) 732-5500

NPI assigned

May 25, 2006

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 TX, MA2 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

Pathology

Education

Baylor College of Medicine, 2001

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Mass General Brigham Community Physicians IncGroup PAC ID 1759273436, 430 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• North Shore Medical Center - Hospital, Salem, MA, CCN 220035
• Massachusetts General Hospital Hospital, Boston, MA, CCN 220071
• Brigham and Women'S Hospital Hospital, Boston, MA, CCN 220110
• Lahey Hospital & Medical Center, Burlington Hospital, Burlington, MA, CCN 220171
• Northeast Hospital Corporation Hospital, Beverly, MA, CCN 220033

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: eldin.karen.bwh@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.

• Mass General Brigham Community Physicians Inc

  • Cardiovascular Disease Physician
  • Medford, MA
  • NPI 1548638265
  Medicare reassignment Care Compare group NPD
• Brigham & Womens Physicians Organization Inc

  • Internal Medicine Physician
  • Boston, MA
  • NPI 1033535497

  Anatomic Pathology & Clinical Pathology

  Medicare reassignment NPD
• Commonwealth Pathology Partners, P.C.

  • Anatomic Pathology & Clinical Pathology Physician
  • Salem, MA
  • NPI 1114032976
  Medicare reassignment NPD
• University of Texas Health Science Center at Houston

  • Clinical Pathology/Laboratory Medicine Physician
  • Houston, TX
  • NPI 1831142751

  Anatomic Pathology & Clinical Pathology

  Medicare reassignment NPD
• Brigham and Women'S Hospital

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1093885816
  NPD
• The University of Texas Health Science Center at Houston

  • Specialty Pharmacy
  • Houston, TX
  • NPI 1174710636
  NPD

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

• Brigham & Womens Hospital, Inc.

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1790717650
  Care Compare affiliation
• Lahey Clinic Hospital, Inc.

  • General Acute Care Hospital
  • Burlington, MA
  • NPI 1558392563
  Care Compare affiliation
• North Shore Medical Center, Inc.

  • General Acute Care Hospital
  • Salem, MA
  • NPI 1730121633
  Care Compare affiliation
• Northeast Hospital Corporation

  • General Acute Care Hospital
  • Beverly, MA
  • NPI 1316917941
  Care Compare affiliation
• Northeast Hospital Corporation

  • Psychiatric Hospital Unit
  • Beverly, MA
  • NPI 1407827710
  Care Compare affiliation
• The General Hospital Corporation

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1023049236
  Care Compare affiliation

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

{
    "created_epoch": "1148515200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1785110400000",
    "number": "1043266901",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 741169",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "772741169",
            "telephone_number": "832-824-1866",
            "fax_number": "832-825-1032"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "75 FRANCIS ST",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021156110",
            "telephone_number": "617-732-5500"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "81 Highland Ave",
            "address_purpose": "LOCATION",
            "city": "Salem",
            "state": "MA",
            "postal_code": "019702714",
            "country_code": "US",
            "telephone_number": "978-354-3600",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "2014 Washington St",
            "address_purpose": "LOCATION",
            "city": "Newton",
            "state": "MA",
            "postal_code": "024621607",
            "country_code": "US",
            "telephone_number": "617-243-6140",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1153 Centre St",
            "address_purpose": "LOCATION",
            "city": "Jamaica Plain",
            "state": "MA",
            "postal_code": "021303446",
            "country_code": "US",
            "telephone_number": "617-983-7000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "55 Fruit St",
            "address_purpose": "LOCATION",
            "city": "Boston",
            "state": "MA",
            "postal_code": "021142696",
            "country_code": "US",
            "telephone_number": "617-643-0800",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "ELDIN",
        "first_name": "KAREN",
        "middle_name": "WIEDEMANN",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-05-25",
        "last_updated": "2026-07-27",
        "certification_date": "2026-07-27",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207ZP0102X",
            "taxonomy_group": "",
            "desc": "Pathology, Anatomic Pathology & Clinical Pathology",
            "state": "MA",
            "license": "293660",
            "primary": true
        },
        {
            "code": "207ZP0102X",
            "taxonomy_group": "",
            "desc": "Pathology, Anatomic Pathology & Clinical Pathology",
            "state": "TX",
            "license": "M1085",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "180862801",
            "state": "TX"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Leslie S. Eldeiry, MD
• Emily Jean Elder, PA-C
• Petal Elder, MD, MPH
• Ahmad Elderie
• Allison Janet Elderkin, LICSW
• Chatham B Eldredge
• Ijeoma C Eleazu, MD
• Elemental Health
• Abdulaziz Elemosho
• Jared S Elenbaas, MD, PHD

• Anatomic Pathology & Clinical Pathology Physician in Boston, MA
• Providers in Boston, MA by specialty
• Anatomic Pathology & Clinical Pathology Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 27, 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.