Gregory Markway, PHD

Primary specialty

PsychologistTaxonomy code 103T00000X

License

01456 Issued in MO

Practice address

3702 W Truman Blvd
Suite 115
Jefferson City, MO 65109-4970

Phone

(573) 634-5303

Fax

(573) 761-6888

NPI assigned

Jun 12, 2006

Last updated

Jul 13, 2026By the provider in NPPES

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

Not listed in the public Medicare enrollment file

Eligible to order & refer

• Part B services: No
• Medical equipment: Yes
• Home health: No
• Power mobility devices: No
• Hospice: No

Green means eligible to order or refer.

Merit-based Incentive Payment System (MIPS)

Final score

80.23 of 100Reported as group

Quality

58.17

Promoting interoperability

100

Improvement activities

40

Cost

75.92

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Philosophy

State licenses

Practice roles

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.

• SSM Regional Health Services

  dba SSM Health Medical Group - Behavioral Health

  • Mental Health Clinic/Center (Including Community Mental Health Center)
  • Jefferson City, MO
  • NPI 1053368159
  NPD (past)
• SSM Regional Health Services

  dba SSM Health Medical Group

  • Multi-Specialty Clinic/Center
  • Jefferson City, MO
  • NPI 1336555275
  NPD (past)
• SSM Regional Health Services

  dba SSM Health Pharmacy

  • Community/Retail Pharmacy
  • Jefferson City, MO
  • NPI 1922119726
  NPD (past)

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

{
    "created_epoch": "1150070400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1255373148",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "123 BOONVILLE RD",
            "city": "JEFFERSON CITY",
            "state": "MO",
            "postal_code": "651090903",
            "telephone_number": "573-636-3066",
            "fax_number": "573-761-6888"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3702 W TRUMAN BLVD",
            "address_2": "SUITE 115",
            "city": "JEFFERSON CITY",
            "state": "MO",
            "postal_code": "651094970",
            "telephone_number": "573-634-5303",
            "fax_number": "573-761-6888"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MARKWAY",
        "first_name": "GREGORY",
        "name_prefix": "Dr.",
        "credential": "PHD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-06-12",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "103T00000X",
            "taxonomy_group": "",
            "desc": "Psychologist",
            "state": "MO",
            "license": "01456",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Marathon Health, LLC
• Corbin Matthew Marchack, DDS
• Cathie A Marcus, RN
• Marissa R Abbott
• Barbara Gerth Markway, PH.D.
• Kyle Christopher Markway, PT
• Charity Lynette Marsh, CNP
• William H. Marshall, M.D.
• Sara J Marso, FNP
• Esteban Marten, MD

• Psychologist in Jefferson City, MO
• Providers in Jefferson City, MO by specialty
• Psychologist in Missouri

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.