Mark A Thomas, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

04-25848 Issued in KS

Practice address

4409 SW Shenandoah Rd
Topeka, KS 66610-1678

Phone

(785) 554-6259

NPI assigned

Aug 3, 2006

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

Other identifiers 2

Medicare fee-for-service enrollment

Enrolled in KS

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

Internal Medicine

Education

Other, 1990

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Cotton-O'Neil Clinic Revocable TrustGroup PAC ID 5496659195, 659 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Midland Care Home Health Home health agency, Topeka, KS, CCN 178090
• Stormont Vail Hospital Hospital, Topeka, KS, CCN 170086
• University of Kansas Health System - St Francis Campus Hospital, Topeka, KS, CCN 170016

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: mthomas5468@stormontvaildirect.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.

• Cotton-O'Neil Clinic Revocable Trust

  dba Cotton O'Neil

  • Internal Medicine Physician
  • Topeka, KS
  • NPI 1811944457
  Medicare reassignment Care Compare group NPD
• Cotton-O'Neil Clinic Revocable Trust

  dba Stormont Vail Health DME

  • Durable Medical Equipment & Medical Supplies
  • Topeka, KS
  • NPI 1700076015
  NPD

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

• Midland Care Connection, Inc.

  dba Midland Care Home Health

  • Home Health Agency
  • Topeka, KS
  • NPI 1871985689
  Care Compare affiliation
• Midland Care Connection, Inc.

  dba Midland Hospice Care

  • Community Based Hospice Care Agency
  • Topeka, KS
  • NPI 1962441378

  Home health agency

  Care Compare affiliation
• Stormont-Vail Healthcare Inc

  dba Stormont Vail Hospital

  • General Acute Care Hospital
  • Topeka, KS
  • NPI 1194782409
  Care Compare affiliation
• Topeka Hospital, LLC

  dba The University of Kansas Health System, St. Francis Campus

  • General Acute Care Hospital
  • Topeka, KS
  • NPI 1912423260
  Care Compare affiliation

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

{
    "created_epoch": "1154563200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1777593600000",
    "number": "1629086277",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4409 SW SHENANDOAH RD",
            "city": "TOPEKA",
            "state": "KS",
            "postal_code": "666101678",
            "telephone_number": "785-554-6259"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4409 SW SHENANDOAH RD",
            "city": "TOPEKA",
            "state": "KS",
            "postal_code": "666101678",
            "telephone_number": "785-554-6259"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "THOMAS",
        "first_name": "MARK",
        "middle_name": "A",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-08-03",
        "last_updated": "2026-05-01",
        "certification_date": "2026-05-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "KS",
            "license": "04-25848",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "100180660A",
            "state": "KS"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICARE PTAN",
            "identifier": "067115",
            "state": "KS"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Erin Rene Thomas, RN
• Gabriel Pight Thomas, LMSW
• Jonathan S. Thomas, DDS
• Laura Marie Thomas
• Leslie Thomas
• Megan Thomas
• Pamela Anne Thomas, APRN
• Jane Michelle Thompson-Janis, LMSW
• Andrea Marie Velez Thompson
• Baruch H Thompson, MD

• Internal Medicine Physician in Topeka, KS
• Providers in Topeka, KS by specialty
• Internal Medicine Physician in Kansas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 1, 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.