John Garrett Llewelyn, MD

Primary specialty

Obstetrics & Gynecology PhysicianTaxonomy code 207V00000X

License

4301506644 Issued in MI

Practice address

1000 Houghton Ave
Saginaw, MI 48602-5303

Phone

(989) 746-7500

NPI assigned

Jun 3, 2016

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 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

Obstetrics/Gynecology

Education

Wayne State University School of Medicine, 2016

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Saginaw Cooperative Hospitals IncGroup PAC ID 3971400318, 74 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Covenant Medical Center Hospital, Saginaw, MI, CCN 230070

Merit-based Incentive Payment System (MIPS)

Final score

91.39 of 100Reported as apm

Quality

73.44

Promoting interoperability

100

Improvement activities

40

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://epicproxy.ardenthealth.com/fhir/UPC/api/FHIR/R4
• Direct secure messaging: gllewelyn40384@direct.covenanthealthcare.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.

• Saginaw Cooperative Hospitals, Inc

  • Internal Medicine Physician
  • Saginaw, MI
  • NPI 1346344991
  Medicare reassignment Care Compare group NPD
• Saginaw Cooperative Hospital Inc

  • Hospitalist Physician
  • Saginaw, MI
  • NPI 1548877434
  NPD
• Saginaw Cooperative Hospitals, Inc

  • Obstetrics & Gynecology Physician
  • Saginaw, MI
  • NPI 1558376962
  NPD
• Covenant Medical Center, Inc.

  • General Acute Care Hospital
  • Saginaw, MI
  • NPI 1588656946
  NPD (past)
• Ahs Oklahoma Physician Group LLC

  • Family Medicine Physician
  • Tulsa, OK
  • NPI 1235182775
  NPD (past)

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

• Covenant Medical Center, Inc.

  • General Acute Care Hospital
  • Saginaw, MI
  • NPI 1588656946
  Care Compare affiliation

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

{
    "created_epoch": "1464912000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1767916800000",
    "number": "1326497066",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1000 HOUGHTON AVE",
            "city": "SAGINAW",
            "state": "MI",
            "postal_code": "486025303",
            "telephone_number": "899-746-7500"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1000 HOUGHTON AVE",
            "city": "SAGINAW",
            "state": "MI",
            "postal_code": "486025303",
            "telephone_number": "989-746-7500"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "117 S Main St Ste A",
            "address_purpose": "LOCATION",
            "city": "Freeland",
            "state": "MI",
            "postal_code": "486238935",
            "country_code": "US",
            "telephone_number": "989-753-8453",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "926 N Michigan Ave",
            "address_purpose": "LOCATION",
            "city": "Saginaw",
            "state": "MI",
            "postal_code": "486024369",
            "country_code": "US",
            "telephone_number": "989-753-8453",
            "fax_number": "989-753-3519",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "975 N Main St Ste L",
            "address_purpose": "LOCATION",
            "city": "Frankenmuth",
            "state": "MI",
            "postal_code": "487341104",
            "country_code": "US",
            "telephone_number": "989-753-8453",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "LLEWELYN",
        "first_name": "JOHN",
        "middle_name": "GARRETT",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2016-06-03",
        "last_updated": "2026-01-09",
        "certification_date": "2026-01-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "MI",
            "license": "4301506644",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Jessica Q Liu
• Samantha Liu
• Charvetta Livingston
• Bhakthi Nimesha Liyanage
• John B Llewelyn, MD
• Steven J Lloyd, CRNA
• Austin J Lobbestael, CRNA
• Ashlynne Alyce Lobdell
• Ella Lochbiler
• Ryan W Locke, LLMSW, DP-C

• Obstetrics & Gynecology Physician in Saginaw, MI
• Providers in Saginaw, MI by specialty
• Obstetrics & Gynecology Physician in Michigan

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 9, 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.