William Tobey Horn, MD
Psychiatry Physician · Burlington, VT
William Tobey Horn, MD is a psychiatry physician with a practice address in Burlington, Vermont, and NPI 1912140286, issued on Apr 15, 2009. Check the license (Vermont 042-0012195, as entered in NPPES) on the Vermont Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- William Tobey Horn
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 042-0012195 VT
Self-reported in NPPES; status is on the state search - Practice location
- 111 Colchester Ave, Burlington, VT 05401
- Phone
- (802) 847-0552
- Enumerated
- Apr 15, 2009
- Record last updated
- Jun 21, 2013 (not updated in 13 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 203 in Vermont → Look up another NPI →
Also registered at 111 Colchester Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William Tobey Horn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVermont Board of Medical Practice
Search for license 042-0012195Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average psychiatry physician in 2024
24 Medicare Part D claims, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Lorazepam12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
William Tobey Horn among 203 psychiatry physician records in Vermont
William Tobey Horn, MD is one of 203 psychiatry physician records with a practice address in Vermont. 62% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 70% of them.
- NPI issued2009 · 70% of these records are older, 27% newer
- In a Medicare fileYes · 62% of these records are
- In the CMS Doctors and Clinicians fileNo · 48% of these records are
- Record last updated2013 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Vermont practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
67 psychiatry physician records list a practice address in Burlington
They are 67 of the 3,455 NPPES records with a practice address in Burlington, and 203 psychiatry physician records in Vermont.
All 203 in Vermont → Every provider in Burlington → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Richard Bernstein, M.D.Burlington, VT 054011083632137
- Megan Brennan, M.D.Burlington, VT 054011346274198
- David Fassler, M.D.Burlington, VT 054011275558702
- John Helzer, M.D.Burlington, VT 054011811910961
- James Jacobson, M.D.Burlington, VT 054011518987619
- Suzanne Kennedy, M.D.Burlington, VT 054011871512905
- Donna Kiley, M.D.Burlington, VT 054011316960198
- Harvey Klein, MDBurlington, VT 054011174521736
Common questions
What is William Tobey Horn, MD's NPI number?
William Tobey Horn, MD's National Provider Identifier (NPI) is 1912140286, issued on Apr 15, 2009. An NPI identifies a provider in billing; it is not a license.
Where is William Tobey Horn, MD located?
The NPPES record lists a practice address at 111 Colchester Ave, Burlington, VT, 05401. Phone: (802) 847-0552. Providers update this record themselves, so call before visiting.
How can I verify William Tobey Horn, MD's license?
NPPES lists Vermont license number 042-0012195, as entered by the provider. Search the Vermont Board of Medical Practice at https://www.healthvermont.gov/systems/board-medical-practice. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Tobey Horn, MD prescribe under Medicare Part D?
In 2024, William Tobey Horn, MD had 24 Medicare Part D claims; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.