Margaret Jane Blayney, MD

Primary specialty

Gastroenterology PhysicianTaxonomy code 207RG0100X

License

4301500792 Issued in MI

Practice address

1650 Ramblewood Dr Ste 100
East Lansing, MI 48823-7396

Phone

(517) 332-1200

Fax

(517) 351-7122

NPI assigned

Apr 30, 2013

Last updated

Mar 3, 2026By the provider in NPPES

Sex

Female

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 MI

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

GastroenterologyAlso: Internal Medicine

Education

University of Michigan Medical School, 2013

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Regents of the University of MichiganGroup PAC ID 3779496856, 3,344 clinicians

Troy Gastroenterology PCGroup PAC ID 9739143991, 47 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• University of Michigan Health System Hospital, Ann Arbor, MI, CCN 230046
• McLaren Greater Lansing Hospital, Lansing, MI, CCN 230167

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: margaret.blayney@direct.vmmc.org
• Direct secure messaging: mblayney48119@direct.med.umich.edu

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.

• Regents of the University of Michigan

  • Internal Medicine Physician
  • Ann Arbor, MI
  • NPI 1205868353
  Medicare reassignment Care Compare group NPD
• Troy Gastroenterology PC

  dba Center For Digestive Health

  • Gastroenterology Physician
  • Rochester Hills, MI
  • NPI 1134180318
  Medicare reassignment Care Compare group
• Regents of the University of Michigan

  • Gastroenterology Physician
  • Ann Arbor, MI
  • NPI 1801827639
  NPD
• Regents of the University of Michigan

  • Specialty Pharmacy
  • Dexter, MI
  • NPI 1952181919
  NPD
• Troy Gastroenterology, PC

  dba Michigan Gastroenterology Institute

  • Gastroenterology Physician
  • East Lansing, MI
  • NPI 1699880591
  NPD
• Regents of the University of Michigan

  dba University of Michigan Health System

  • General Acute Care Hospital
  • Ann Arbor, MI
  • NPI 1003878539
  NPD (past)

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

• McLaren Greater Lansing

  • General Acute Care Hospital
  • Lansing, MI
  • NPI 1134104672
  Care Compare affiliation
• Regents of the University of Michigan

  dba University of Michigan Health System

  • General Acute Care Hospital
  • Ann Arbor, MI
  • NPI 1003878539
  Care Compare affiliation

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

{
    "created_epoch": "1367280000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1772496000000",
    "number": "1629413018",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3621 S STATE ST",
            "city": "ANN ARBOR",
            "state": "MI",
            "postal_code": "481081633",
            "telephone_number": "734-647-5299"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1650 RAMBLEWOOD DR STE 100",
            "city": "EAST LANSING",
            "state": "MI",
            "postal_code": "488237396",
            "telephone_number": "517-332-1200",
            "fax_number": "517-351-7122"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1500 E Medical Center Dr",
            "address_purpose": "LOCATION",
            "city": "Ann Arbor",
            "state": "MI",
            "postal_code": "481095000",
            "country_code": "US",
            "telephone_number": "734-936-4000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "BLAYNEY",
        "first_name": "MARGARET",
        "middle_name": "JANE",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2013-04-30",
        "last_updated": "2026-03-03",
        "certification_date": "2026-03-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "MI",
            "license": "4301500792",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Katherine Blair
• Peter Blakemore, DO
• Christine A Blakeney, MD
• Alexander James Blanchett
• Charisse Blanks
• Kyle Blickenstaff, B.S.
• Krista Blievernicht, PTA
• Karla J Block, LMSW
• Iman Blocker
• Kassie Blok, LLSLP

• Gastroenterology Physician in East Lansing, MI
• Providers in East Lansing, MI by specialty
• Gastroenterology Physician in Michigan

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