NPI age
18 years
Enumerated 2007-07-03
● Active
Type 1 · Individual
DR. Christopher Martin Horn, M.D.
Horn is 1 of 4 psychiatry & neurology providers in Marietta and 1 of 23 in Georgia.
Primary specialty
Psychiatry & Neurology
Plus 5 subspecialties
Licensed in
GA, MT, FL, OH
4 states
Status
Active
No deactivations on record
Last NPPES update
2026-02-10
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 23 active psychiatry & neurology providers in Georgia.
NPI age
18 years
↑ 3 yr above median (15 yr)
State licenses
4 states
Top 39% — 60% of peers are multi-state
Subspecialties
2
In the 91% of peers with subspecialties
NPI lifetime · 2007 → 2026
2007-07Enumerated in NPPES
2007
2026
Where they practice
Practice location
677 Church St Ne
Marietta, GA 300601101
Mailing address
805 Sandy Plains Road, Medical Staff Services
Marietta, GA 300666340
Additional practice locations
3 secondary locations on file with NPPES.
Location 2
9981 S Healthpark Dr
Fort Myers, FL 339083618
Location 3
11215 Metro Pkwy Ste 100
Fort Myers, FL 339661206
Location 4
55 Whitcher St Ne, Suite 160
Marietta, GA 300601155
Specialties
-
Psychiatry & Neurology PrimaryThe medical subspecialty of Neurocritical Care is devoted to the comprehensive, multisystem care of the critically-ill neurological patient. Like other intensivists, the neurointensivist generally assumes the primary role for...
-
HospitalistHospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term...
-
Psychiatry & NeurologyA Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (FL) | 121149200 |
Multi-state credentialing: Licensed in 4 states. Useful context for credentialers building cross-state provider networks.
Practice context
Part of a multi-provider practice. 478 other active providers share this practice address in NPPES.
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- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
- Check the state license is currently active.State licensing boards publish current status; NPPES does not.
- Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.