Peter J Weinstein, M.D.

Primary specialty

Gastroenterology PhysicianTaxonomy code 207RG0100X

License

159667 Issued in MA

Practice address

299 Carew St
Ste 419
Springfield, MA 01104-2301

Phone

(413) 737-7951

NPI assigned

May 2, 2006

Last updated

Jul 13, 2026By the provider in NPPES

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 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

Gastroenterology

Education

Columbia University College of Physicians and Surgeons, 1992

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Riverbend Medical Group IncGroup PAC ID 5698064343, 227 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Mercy Medical Ctr Hospital, Springfield, MA, CCN 220066
• Baystate Medical Center Hospital, Springfield, MA, CCN 220077

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: pweinstein2385565@direct.trinity-health.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.

• Riverbend Medical Group, Inc.

  dba Trinity Health Of New England Medical Group

  • Internal Medicine Physician
  • Springfield, MA
  • NPI 1841651197

  Gastroenterology

  Medicare reassignment Care Compare group NPD
• Riverbend Medical Group, Inc

  dba Trinity Health Of New England Medical Group

  • Durable Medical Equipment & Medical Supplies
  • Springfield, MA
  • NPI 1265023154
  NPD
• Baystate Medical Practices, Inc

  • Emergency Medical Services (Emergency Medicine) Physician
  • Springfield, MA
  • NPI 1548205909
  NPD (past)
• Mwa,PC

  dba RiverBend Medical Group

  • Internal Medicine Physician
  • Chicopee, MA
  • NPI 1609821990

  Gastroenterology

  NPD (past)

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

• Baystate Medical Center Inc

  dba Baystate Medical Center

  • General Acute Care Hospital
  • Springfield, MA
  • NPI 1487655064
  Care Compare affiliation
• Baystate Medical Center Inc

  dba Baystate Reference Laboratories

  • Clinical Medical Laboratory
  • Springfield, MA
  • NPI 1568488450

  Hospital

  Care Compare affiliation
• The Mercy Hospital Inc

  dba Mercy Medical Center

  • General Acute Care Hospital
  • Springfield, MA
  • NPI 1043204316
  Care Compare affiliation
• The Mercy Hospital Inc

  dba Mercy Rehabilitation Hospital

  • Rehabilitation Hospital Unit
  • Springfield, MA
  • NPI 1750360798
  Care Compare affiliation

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

{
    "created_epoch": "1146528000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1467410308",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "299 CAREW ST",
            "address_2": "STE 419",
            "city": "SPRINGFIELD",
            "state": "MA",
            "postal_code": "011042301",
            "telephone_number": "413-737-7951"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "299 CAREW ST",
            "address_2": "STE 419",
            "city": "SPRINGFIELD",
            "state": "MA",
            "postal_code": "011042301",
            "telephone_number": "413-737-7951"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WEINSTEIN",
        "first_name": "PETER",
        "middle_name": "J",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-05-02",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "MA",
            "license": "159667",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Abdirahman H Wehliye
• Carrie Weibel
• Stephen Halley Weigant, MD
• Hilary S Weiner, LDN
• Stephanie R. Weiner
• Clara G. Weinstock, D.O.
• Sharon Ariela Weintraub, CNM
• Richard Allen Weiss, D.O.
• Nancy Weithofer, P.T.
• Samuel David Weitzen, MD

• Gastroenterology Physician in Springfield, MA
• Providers in Springfield, MA by specialty
• Gastroenterology Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.