Individual provider Active NPI

Mark D Zeglis, M.D.

  • Gastroenterology Physician
  • Ypsilanti, MI
National Provider Identifier
1497898233
Registry record updated Sep 9, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Gastroenterology PhysicianTaxonomy code 207RG0100X
License
4301083313 Issued in MI
Practice address
5300 Elliott Dr
Ypsilanti, MI 48197-8632
Phone
(734) 434-6262
Fax
(734) 712-2820
NPI assigned
Feb 14, 2007
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 9, 2025

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Gastroenterology Physician 207RG0100X 4301083313 MI Primary

Addresses

Primary practice location

5300 Elliott Dr
Ypsilanti, MI 48197-8632

Mailing address

5300 Elliott Dr
Ypsilanti, MI 48197-8632
Phone (734) 434-6262

Other identifiers 8

IdentifierTypeStateIssuer
0H14989OtherMIBCBS GROUP
5175340MedicaidMI
6U10025OtherMIHAP
P00615775OtherMIMEDICARE RAILROAD PTAN
0814548OtherMIBCBS INDIVIDUAL
7489887OtherMIAETNA
3902640OtherMICIGNA
025100OtherMIMIDWEST HEALTH PLAN

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address hurongastro@directaddress.net Health Information Exchange (HIE)

Medicare participation

Medicare enrollment files
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

Enrollment IDStateProvider typePAC IDDetails
I20070713000697 MI Practitioner - GastroenterologyPractitioner - Internal Medicine 3476653858 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
GastroenterologyAlso: Internal Medicine
Education
University of Michigan Homeopathic Medical School, 2001
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices

Practice addresses (Care Compare)

5300 Elliott Dr
Ypsilanti, MI 48197-8632
Phone (734) 434-6262

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Colonoscopy176
Upper gastrointestinal (GI) endoscopy for acid reflux122

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
4301083313MIMDGastroenterology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
St Mary Mercy Hospital Crna Current Accepting new patients
St Mary Mercy Hospital Professional Current Accepting new patients
Huron Gastroenterology Associates PC Gastroenterology CurrentSince Jul 1, 2007 Accepting new patients
St Mary Mercy Hospital Professional Gastroenterology CurrentSince Oct 14, 2023 Accepting new patients
St Mary Mercy Hospital Current Accepting new patients
Huron Gastroenterology Associates PC Gastroenterology CurrentSince Jul 1, 2007 Accepting new patients
Huron Gastro Endoscopy Center LLC PastSince Nov 7, 2022 Accepting new patients

Locations

7575 Grand River Rd
Brighton, MI 48114
Phone (810) 844-7544

14650 E Old US Highway 12
Chelsea, MI 48118
Phone (734) 475-2600

620 Byron Rd
Howell, MI 48843
Phone (517) 545-5450

36650 5 Mile Rd
Livonia, MI 48154
Phone (734) 434-6262

36475 5 Mile Rd
Livonia, MI 48154
Phone (734) 464-4800

36650 5 Mile Rd
Ste 101
Livonia, MI 48154
Phone (734) 434-6262

36650 5 Mile Rd
Ste 100
Livonia, MI 48154
Phone (734) 432-0314

20555 Victor Pkwy
Livonia, MI 48152
Phone (734) 343-3925

5300 Elliott Dr
Ypsilanti, MI 48197
Phone (734) 434-6262

Interoperability endpoints

  • Direct secure messaging: hurongastro@directaddress.net
  • FHIR API: https://fhir.nextgen.com/nge/prod/fhir-api-r4/fhir/r4/

Organizations & group practices 7

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.

Hospital & facility affiliations 3

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

NPI Registry JSON

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

{
    "created_epoch": "1171411200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757376000000",
    "number": "1497898233",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5300 ELLIOTT DR",
            "city": "YPSILANTI",
            "state": "MI",
            "postal_code": "481978632",
            "telephone_number": "734-434-6262"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5300 ELLIOTT DR",
            "city": "YPSILANTI",
            "state": "MI",
            "postal_code": "481978632",
            "telephone_number": "734-434-6262",
            "fax_number": "734-712-2820"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ZEGLIS",
        "first_name": "MARK",
        "middle_name": "D",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-02-14",
        "last_updated": "2025-09-09",
        "certification_date": "2025-09-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "MI",
            "license": "4301083313",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BCBS GROUP",
            "identifier": "0H14989",
            "state": "MI"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "5175340",
            "state": "MI"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "HAP",
            "identifier": "6U10025",
            "state": "MI"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICARE RAILROAD PTAN",
            "identifier": "P00615775",
            "state": "MI"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BCBS INDIVIDUAL",
            "identifier": "0814548",
            "state": "MI"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "AETNA",
            "identifier": "7489887",
            "state": "MI"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "CIGNA",
            "identifier": "3902640",
            "state": "MI"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MIDWEST HEALTH PLAN",
            "identifier": "025100",
            "state": "MI"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "hurongastro@directaddress.net",
            "affiliation": "N",
            "endpointDescription": "Direct Address",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "XML,PDF",
            "address_1": "5300 Elliott Dr",
            "city": "Ypsilanti",
            "state": "MI",
            "country_code": "US",
            "postal_code": "481978632",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Ypsilanti, MI

Sources for this page

Verify at the official NPI Registry.