Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Thomas Horn Jr., DO

Individual provider Psychiatry Physician · NPI 1841516598

Dr. Thomas Horn Jr., DO is a Psychiatry in Chesterfield, Missouri. Graduated from University of Texas Medical School at Houston in 2010, 16 years ago. Practices with Mercy Clinic Adult Psychiatry LLC, a 15-clinician group, works from 3 locations, accepts Medicare assignment and offers telehealth. Licensed in Missouri.

Years since qualifying
16
Trained at
University of Texas Medical School at Houston
Licensed in
MO
In the registry since
2010
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

1176 Town And Country Commons Dr
Chesterfield, MO 63017-8200
Phone: (314) 251-2870
Fax: (314) 251-2871
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 1400 Us Highway 61 Ste 150a, Festus, MO 63028-4100 — (636) 543-2230
  • 1400 Us Highway 61 Ste 150b, Festus, MO 63028-4100 — (636) 543-2237

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence 2014000221 (MO)

Record details

NPI number1841516598
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedApril 19, 2010
Last updated in NPPESJuly 18, 2023
Certification dateJuly 18, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPSYCHIATRY
Medical schoolUNIVERSITY OF TEXAS MEDICAL SCHOOL AT HOUSTON
Graduated 2010 (16 years in practice)
Group practice Mercy Clinic Adult Psychiatry Llc — 15 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Chesterfield