Ian Barbash

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

L-244091 Issued in MA

Practice address

Massachusetts General Hospital
55 Fruit St.
Boston, MA 02114

Phone

(617) 726-2865

NPI assigned

Jun 8, 2010

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

Medicare fee-for-service enrollment

Enrolled in PA, MD2 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

Internal MedicineAlso: Critical Care (Intensivists), Pulmonary Disease

Education

Harvard Medical School, 2010

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

University of Pittsburgh PhysiciansGroup PAC ID 8729990239, 4,166 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Upmc Presbyterian Shadyside Hospital, Pittsburgh, PA, CCN 390164

Merit-based Incentive Payment System (MIPS)

Final score

80.94 of 100Reported as group

Quality

61.89

Promoting interoperability

100

Improvement activities

40

Cost

74.58

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: ibarbash31708@upmc.direct-ci.com

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.

• University of Pittsburgh Physicians

  • Gastroenterology Physician
  • Pittsburgh, PA
  • NPI 1619935004
  Medicare reassignment Care Compare group NPD
• Susquehanna Physician Services

  • Pulmonary Disease Physician
  • Williamsport, PA
  • NPI 1083677868
  Medicare reassignment NPD
• Upmc Community Medicine, Inc

  • Internal Medicine Physician
  • Pittsburgh, PA
  • NPI 1558976092
  Medicare reassignment NPD
• Upmc Western Maryland Corporation

  • Internal Medicine Physician
  • Cumberland, MD
  • NPI 1184769952
  Medicare reassignment NPD
• Susquehanna Physician Services

  • Radiology Clinic/Center
  • Mansfield, PA
  • NPI 1073361564
  NPD
• University of Pittsburgh Physicians

  • Diagnostic Radiology Physician
  • Pittsburgh, PA
  • NPI 1285692699
  NPD
• University of Pittsburgh Physicians

  • Pulmonary Disease Physician
  • Pittsburgh, PA
  • NPI 1811955230
  NPD
• Upmc Community Medcine Inc

  • Family Medicine Physician
  • Hermitage, PA
  • NPI 1023806676
  NPD
• Upmc Community Medicine Inc

  • Family Medicine Physician
  • New Castle, PA
  • NPI 1043765670
  NPD
• Upmc Western Maryland Corporation

  • Mental Illness Community Based Residential Treatment Facility
  • Cumberland, MD
  • NPI 1174141592
  NPD
• Upmc Presbyterian Shadyside

  • General Acute Care Hospital
  • Pittsburgh, PA
  • NPI 1821007881
  NPD (past)
• Upmc Western Maryland Health Services, LLC

  • Internal Medicine Physician
  • Cumberland, MD
  • NPI 1134844764
  NPD (past)

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

• Upmc Presbyterian Shadyside

  • Ambulatory Surgical Clinic/Center
  • Pittsburgh, PA
  • NPI 1144384082

  Hospital

  Care Compare affiliation
• Upmc Presbyterian Shadyside

  • Methadone Clinic
  • Pittsburgh, PA
  • NPI 1518089200

  Hospital

  Care Compare affiliation
• Upmc Presbyterian Shadyside

  • Psychiatric Hospital Unit
  • Pittsburgh, PA
  • NPI 1750390134
  Care Compare affiliation
• Upmc Presbyterian Shadyside

  • General Acute Care Hospital
  • Pittsburgh, PA
  • NPI 1821007881
  Care Compare affiliation

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

{
    "created_epoch": "1275955200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1788393600000",
    "number": "1922328392",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "55 FRUIT ST",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021142621"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "MASSACHUSETTS GENERAL HOSPITAL",
            "address_2": "55 FRUIT ST.",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "02114",
            "telephone_number": "617-726-2865"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "BARBASH",
        "first_name": "IAN",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2010-06-08",
        "last_updated": "2026-09-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MA",
            "license": "L-244091",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Barbara Hershey, LCSW
• Anne Barbara, R.D., LDN
• William J Barbaresi, M.D.
• Rebecca Suzanne Barbaresso, DO
• John Barbaro
• Michael Barbato
• Erica Barbay, PHARMD
• Mary Elizabeth Barber Bussiere, LICSW
• Cecily M Barber, MD, MPH
• James Barber, DDS

• Internal Medicine Physician in Boston, MA
• Providers in Boston, MA by specialty
• Internal Medicine Physician in Massachusetts

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