Leigh Marie Seamon, D.O.

Primary specialty

Gynecologic Oncology PhysicianTaxonomy code 207VX0201X

License

34.008774 Issued in OH

Practice address

145 Michigan St NE
Suite 6300
Grand Rapids, MI 49503-2562

Phone

(616) 486-6000

Fax

(616) 486-2065

NPI assigned

Jan 10, 2007

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

Other names 1

• Dr. Leigh Marie Glasscock Former name

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

Gynecological Oncology

Education

Other, 2000

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Cancer and Hematology Centers of Western Mi, P.C.Group PAC ID 4082526793, 109 clinicians

Advantage Health/Saint Mary'S Medical GroupGroup PAC ID 4082807961, 499 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Spectrum Health Hospital, Grand Rapids, MI, CCN 230038
• Corewell Health Reed City Hospital Hospital, Reed City, MI, CCN 231323
• Mercy Health Saint Mary'S Hospital, Grand Rapids, MI, CCN 230059
• Spectrum Health United Hospital Hospital, Greenville, MI, CCN 230035
• Corewell Health Zeeland Hospital Hospital, Zeeland, MI, CCN 230003

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: lseamon5066@epic00.corewelldirect.org
• Direct secure messaging: lseamon4545699@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 and National Provider Directory roles.

• Advantage Health/Saint Mary'S Medical Group

  • Multi-Specialty Clinic/Center
  • Grand Rapids, MI
  • NPI 1376862151
  Medicare reassignment Care Compare group NPD
• Cancer & Hematology Centers of Western Mi, P.C.

  • Specialist
  • Grand Rapids, MI
  • NPI 1528018389
  Medicare reassignment Care Compare group NPD
• Memorial Medical Center of West Michigan

  • General Acute Care Hospital
  • Ludington, MI
  • NPI 1972589489
  Medicare reassignment NPD
• Newaygo County General Hospital Association

  • Hospitalist Physician
  • Fremont, MI
  • NPI 1750404927
  Medicare reassignment NPD
• Reed City Hospital Corporation

  • Family Medicine Physician
  • Reed City, MI
  • NPI 1831253798
  Medicare reassignment NPD
• Spectrum Health Hospitals

  • Hospitalist Physician
  • Grand Rapids, MI
  • NPI 1558407189
  Medicare reassignment NPD
• Spectrum Health United

  • General Acute Care Hospital
  • Greenville, MI
  • NPI 1457304495
  Medicare reassignment NPD
• Metropolitan Hospital

  • Internal Medicine Physician
  • Wyoming, MI
  • NPI 1811937519
  Medicare reassignment
• Advantage Health Saint Mary'S Medical Group

  • Orthopaedic Surgery Physician
  • Byron Center, MI
  • NPI 1003515008
  NPD
• Advantage Health Saint Mary'S Medical Group

  • Multi-Specialty Clinic/Center
  • Grand Rapids, MI
  • NPI 1952340911
  NPD
• Memorial Medical Center of West Michigan

  • Family Medicine Physician
  • Ludington, MI
  • NPI 1144639360
  NPD
• Newaygo County General Hospital Association

  • Critical Access Hospital
  • Fremont, MI
  • NPI 1063836963
  NPD

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

• Pennock Hospital

  • Critical Access Hospital
  • Hastings, MI
  • NPI 1932695525
  Care Compare affiliation
• Reed City Hospital Corporation

  • Critical Access Hospital
  • Reed City, MI
  • NPI 1437259843
  Care Compare affiliation
• Saint Mary'S Health Services

  • General Acute Care Hospital
  • Grand Rapids, MI
  • NPI 1639111057
  Care Compare affiliation
• Spectrum Health Hospitals

  • General Acute Care Hospital
  • Grand Rapids, MI
  • NPI 1922090554
  Care Compare affiliation
• Spectrum Health United

  • General Acute Care Hospital
  • Greenville, MI
  • NPI 1457304495
  Care Compare affiliation
• Zeeland Community Hospital

  • General Acute Care Hospital
  • Zeeland, MI
  • NPI 1275536344
  Care Compare affiliation

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

{
    "created_epoch": "1168387200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1775088000000",
    "number": "1821147422",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "100 MICHIGAN ST NE",
            "city": "GRAND RAPIDS",
            "state": "MI",
            "postal_code": "495032560",
            "telephone_number": "616-486-6790"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "145 MICHIGAN ST NE",
            "address_2": "SUITE 6300",
            "city": "GRAND RAPIDS",
            "state": "MI",
            "postal_code": "495032562",
            "telephone_number": "616-486-6000",
            "fax_number": "616-486-2065"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SEAMON",
        "first_name": "LEIGH",
        "middle_name": "MARIE",
        "name_prefix": "Dr.",
        "credential": "D.O.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2007-01-10",
        "last_updated": "2026-04-02",
        "certification_date": "2026-04-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207VX0201X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology, Gynecologic Oncology",
            "state": "OH",
            "license": "34.008774",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "LEIGH",
            "last_name": "GLASSCOCK",
            "middle_name": "MARIE",
            "prefix": "DR.",
            "credential": "D.O.",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Asia Seaborough
• Timothy Seagrave
• Madeline M Seagraves
• Ashley Seals, FNP
• Jason P Seamon, DO
• Sean W Harrell
• Ashley Ann Searles
• Audrey Searles
• Michele Ann Seasly, ACSW CAC1 LMSW
• Madison Leneigh Seaton

• Gynecologic Oncology Physician in Grand Rapids, MI
• Providers in Grand Rapids, MI by specialty
• Gynecologic Oncology Physician in Michigan

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 2, 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.