NPI Details
DR. Gregory Charles Hahn, DO is a psychiatry psychiatry neurology in Merriam, KS with 19 years of experience. The provider is a Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems. DR. Gregory Charles Hahn, DO NPI is 1972702215. The provider is registered as an individual entity type.
The NPPES NPI record indicates the provider is a male.
The provider's business location address is:
9100 W 74TH ST
MERRIAM, KS
ZIP 66204-004
Phone: (913) 663-2642
Fax: (913) 632-2696
The NPI 1972702215 is registered in the Medicare Provider, Enrollment, Chain and Ownership System (PECOS). The provider is legally eligible to order and refer Part B (Clinical Laboratory and Imaging), Durable Medical Equipment, Part A Home Health Agency (HHA), Power Mobility Devices.
The following top HCPCS codes were publicly reported for this provider under the Medicare program for the year 2016. The reported codes are based on the top codes for each available Medicare specialty, excluding evaluation and management codes.
- Established patient office or other outpatient visit, 30-39 minutes (HCPCS:99214)
- Follow-up hospital inpatient care per day, typically 35 minutes (HCPCS:99233)
- Psychotherapy with evaluation and management visit, 30 minutes (HCPCS:90833)
- Hospital discharge day management, more than 30 minutes (HCPCS:99239)
- Injection of drug or substance under skin or into muscle (HCPCS:96372)
- Psychiatric diagnostic evaluation with medical services (HCPCS:90792)
- Initial hospital inpatient care per day, typically 70 minutes (HCPCS:99223)
- Psychiatric diagnostic evaluation with medical services (HCPCS:90792)
The enumeration date for this NPI number is 7/17/2007 and was last updated on 9/5/2025.
Taxonomy Codes
The NPI record includes the healthcare provider taxonomy classification, state license number and state of licensure. The following information regarding the scope of practice of this provider is available:
| No. |
Taxonomy Code |
Taxonomy Clasification |
Taxonomy Specialization |
License Number |
License State |
Primary |
| 1 | 2084P0800X | Psychiatry & Neurology | Psychiatry | 05-39922 | KANSAS | Yes |
