Dr. Thomas Horn Jr., DO
- Medicare services, 2024
- 333
- Medicare patients, 2024
- 88
- Part D claims, 2024
- 2,858
- Industry payments
- $18,296
- Affiliated sites
- 2
- Practice address
- 1400 Us-61, Festus, MO 63028
- Practice phone
- Call (636) 543-2230
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mercy Hospital Jefferson
Festus, Missouri
Find Dr. Horn's professional email, personal email and mobile number
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Dr. Thomas Horn Jr. is a psychiatrist in Festus, Missouri
Dr. Horn practices at Mercy Hospital Jefferson in Festus, Missouri.
Dr. Horn's NPI, 1841516598, was assigned on April 19, 2010. Dr. Horn graduated from University of Texas Medical School at Houston in 2010. Dr. Horn holds Missouri license 2014000221.
- NPI
- 1841516598NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2264695501
- NPI enumeration date
- April 19, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (636) 543-2230
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Thomas Horn Jr. practices at Mercy Hospital Jefferson in Festus, Missouri
Dr. Horn's primary practice is Mercy Hospital Jefferson, at 1400 Us-61, Festus, MO 63028 in Jefferson County. The practice phone is (636) 543-2230.
- Mercy Hospital Jefferson1400 Us-61, Festus, MO 63028 · Jefferson CountyPhone(636) 543-2230
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Thomas Horn Jr. is affiliated with 3 sites of care and 6 medical groups
Dr. Horn's primary practice is Mercy Hospital Jefferson in Festus, Missouri. The medical group on file is Mercy Virtual. Dmand AI also links Dr. Horn to 5 more medical groups and 2 group practices and clinics, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Thomas Horn Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Horn practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mercy Hospital Jefferson | Available with a free account |
| +2 more sites and 5 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Thomas Horn Jr. is one of 679 psychiatrists in Missouri
Psychiatry is Dr. Horn's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Horn is licensed in Missouri.
Specialties and state licenses
- Psychiatry, MissouriPrimary
Psychiatrists near Dr. Horn
Counts of psychiatrists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Thomas Horn Jr. billed Medicare for 333 services in 2024
CMS data shows 333 Medicare services from Dr. Horn across 5 procedure codes in 2024, for 88 Medicare patients. Medicare paid $20,968 for them. Every service was in an office.
Dr. Horn's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2242024: 17522%
- Other services
- 2023: 02024: 91
- Tests and treatments
- 2023: 852024: 6721%
Dr. Horn compared with the Missouri median for psychiatrists, 2024
- Dr. Horn
- Missouri median
- Medicare services
- 333vs 1332.5 times
- Medicare patients
- 88vs 4980% above
- Part D claims
- 2,715vs 2959.2 times
Medians across 752 psychiatrists in Missouri with Dmand AI profiles that report each measure.
Dr. Horn's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Horn and other psychiatrists in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Thomas Horn Jr. treated 88 Medicare patients in 2024, average age 63
CMS counts 88 Medicare patients who saw Dr. Horn in 2024. The largest group is under 65, with 37 patients. 75% of them have anxiety, and 75% have mood disorders. 36% are also on Medicaid. Their average risk score is 1.61, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Horn's median patient age at 51, with 60% women.
Dr. Horn's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Horn's Medicare patients by sex, 2024
- Women4956%
- Men3944%
Chronic conditions among Dr. Horn's Medicare patients, 2024
- Anxiety75%
- Mood disorders75%
- High cholesterol74%
- Depression67%
- High blood pressure64%
- Arthritis48%
- Bipolar disorder41%
- Chronic kidney disease32%
Share of Medicare patients with each condition. A patient can have several.
Dr. Horn's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 51
Patient panel by sex, all payers
- Women60%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Thomas Horn Jr. wrote 2,858 Medicare Part D claims in 2024
In 2024, Dr. Horn wrote 2,858 Medicare Part D claims for 204 patients. 95% of them were for generic drugs. CMS names the drug for 2,715 of them, across 59 drugs with 11 or more claims each, at $402,477 in total drug cost. In 2023, CMS named 2,708 claims across 58 drugs.
Dr. Horn's Part D claims by kind of drug, 2024
- Generic2,702 claims95%
- Brand-name156 claims5%
Dr. Horn's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Horn's Part D claims, 2024
- Antipsychotics, patients 65 and over8%215 of 2,858 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2,7082024: 2,715No change
Drugs named by CMS: 59 in 2024, 58 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Thomas Horn Jr. offers telehealth to Medicare patients
Dr. Horn accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Horn as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Thomas Horn Jr. received $18,296 in industry payments from 2016 to 2025
CMS Open Payments shows 276 general payments to Dr. Horn from 16 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 57% of the total. ITI, Inc. paid the most, $13,304.
General payments to Dr. Horn by program year, 2016 to 2025
General payments to Dr. Horn by kind, 2016 to 2025
- Speaker and faculty fees$10,44057%
- Food and beverage$4,67426%
- Consulting fees$2,37013%
- Travel and lodging$7794%
- Education$330%
Companies that paid Dr. Horn the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Thomas Horn Jr. graduated from University of Texas Medical School at Houston
Dr. Horn graduated from University of Texas Medical School at Houston in 2010.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Thomas Horn Jr.'s profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Thomas Horn Jr.
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Thomas Horn Jr.'s NPI number?
Dr. Thomas Horn Jr.'s NPI number is 1841516598. It was assigned on April 19, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Thomas Horn Jr.?
Dr. Thomas Horn Jr. is a psychiatrist in Festus, Missouri. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Thomas Horn Jr. practice?
Dr. Horn practices at 1400 Us-61, Festus, MO 63028. Dr. Horn's primary practice is Mercy Hospital Jefferson in Festus, Missouri. Dmand AI also links Dr. Horn to 5 medical groups and 2 group practices and clinics.
What is Dr. Thomas Horn Jr.'s office phone number?
The practice phone on file for Dr. Horn is (636) 543-2230.
What is Dr. Thomas Horn Jr.'s medical license number?
Dr. Horn holds Missouri license 2014000221.
What medical group is Dr. Thomas Horn Jr. part of?
Dr. Horn is linked to Mercy Virtual. Dmand AI links Dr. Horn to 5 more medical groups.
Does Dr. Thomas Horn Jr. accept Medicare?
Yes. CMS data shows Dr. Horn billed Medicare for 333 services in 2024, and Dr. Horn accepts Medicare assignment.
Does Dr. Thomas Horn Jr. offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Horn as offering telehealth services.
How many Medicare patients does Dr. Thomas Horn Jr. see?
CMS counts 88 Medicare patients who saw Dr. Horn in 2024, with an average age of 63.
What services does Dr. Thomas Horn Jr. bill to Medicare?
In 2024, Dr. Horn's most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and psychiatric service (90833).
Show 4 more questionsShow fewer questions
Where did Dr. Thomas Horn Jr. go to medical school?
Dr. Horn graduated from University of Texas Medical School at Houston in 2010.
What drugs does Dr. Thomas Horn Jr. prescribe most?
In 2024 Medicare Part D data, Dr. Horn's most prescribed drugs by claims were Trazodone HCl, Clonazepam and Sertraline HCl.
Has Dr. Thomas Horn Jr. received payments from drug or device companies?
CMS Open Payments shows $18,296 in general payments to Dr. Horn from 16 companies from 2016 to 2025. The largest total came from ITI, Inc.
How long has Dr. Thomas Horn Jr. been practicing?
Dr. Horn graduated from medical school in 2010, 16 years ago.
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