Gregory Charles Hahn, DO

Primary specialty

Psychiatry PhysicianTaxonomy code 2084P0800X

License

05-39922 Issued in KS

Practice address

9100 W 74TH St
Merriam, KS 66204-4004

Phone

(913) 663-2642

Fax

(913) 632-2696

NPI assigned

Jul 17, 2007

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

Electronic endpoints 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

Psychiatry

Education

Other, 2007

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Shawnee Mission Medical Center IncGroup PAC ID 9537119037, 282 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Adventhealth Shawnee Mission Hospital, Shawnee Mission, KS, CCN 170104
• Stormont Vail Hospital Hospital, Topeka, KS, CCN 170086

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: ghahn4763177@adventhealth.direct-ci.com
• Direct secure messaging: ghahn45273@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.

• Shawnee Mission Medical Center Inc

  • Family Medicine Physician
  • Merriam, KS
  • NPI 1992735690
  Medicare reassignment Care Compare group NPD
• Cotton-O'Neil Clinic Revocable Trust

  • Internal Medicine Physician
  • Topeka, KS
  • NPI 1811944457
  Medicare reassignment NPD
• Shawnee Mission Medical Center Inc

  • General Acute Care Hospital
  • Merriam, KS
  • NPI 1023171634
  NPD (past)
• Stormont-Vail Healthcare Inc

  • General Acute Care Hospital
  • Topeka, KS
  • NPI 1194782409
  NPD (past)

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

• Shawnee Mission Medical Center Inc

  • General Acute Care Hospital
  • Merriam, KS
  • NPI 1023171634
  Care Compare affiliation
• Shawnee Mission Medical Center Inc

  • Clinical Medical Laboratory
  • Merriam, KS
  • NPI 1235792003

  Hospital

  Care Compare affiliation
• Stormont-Vail Healthcare Inc

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

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

{
    "created_epoch": "1184630400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757030400000",
    "number": "1972702215",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "9100 W 74TH ST",
            "city": "MERRIAM",
            "state": "KS",
            "postal_code": "662044004",
            "telephone_number": "913-663-2642",
            "fax_number": "913-632-2696"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "9100 W 74TH ST",
            "city": "MERRIAM",
            "state": "KS",
            "postal_code": "662044004",
            "telephone_number": "913-663-2642",
            "fax_number": "913-632-2696"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HAHN",
        "first_name": "GREGORY",
        "middle_name": "CHARLES",
        "name_prefix": "Dr.",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-07-17",
        "last_updated": "2025-09-05",
        "certification_date": "2025-09-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "KS",
            "license": "05-39922",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "ghahn45273@stormontvaildirect.org",
            "affiliation": "Y",
            "endpointDescription": "SVH Secure messaging",
            "affiliationName": "COTTON-O'NEIL CLINIC REVOCABLE TRUST",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "CCDA",
            "address_1": "3707 SW 6th Ave",
            "city": "Topeka",
            "state": "KS",
            "country_code": "US",
            "postal_code": "666062084",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "ghahn45273@stormontvaildirect.org",
            "affiliation": "Y",
            "endpointDescription": "SVH Secure messaging",
            "affiliationName": "STORMONT-VAIL HEALTHCARE INC",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "CCDA",
            "address_1": "3707 SW 6th Ave",
            "city": "Topeka",
            "state": "KS",
            "country_code": "US",
            "postal_code": "666062084",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Austin David Gregory, CRNA
• Beth Ann Grote
• Carrie Grounds, MD
• Michelle Renee Grove
• Ammar Habib, M.D.
• Keely Quinn Haire, RN
• Eric Halbleib, PT, DPT
• Kaitlyn Sue Hamilton
• Alex Claire Hammer, OTD, OTR/L
• Andrea Beth Hammond, DPT

• Psychiatry Physician in Merriam, KS
• Providers in Merriam, KS by specialty
• Psychiatry Physician in Kansas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 5, 2025; 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.