William Barnhart, M.D.
Psychiatry Physician · Windsor, CO
William Barnhart, M.D. is a psychiatry physician with a practice address in Windsor, Colorado, and NPI 1770552267, issued on Mar 16, 2006. Check the license on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- William Barnhart
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- Practice location
- 1721 Dolores River Dr, Windsor, CO 80550
- Phone
- (970) 371-1143
- Enumerated
- Mar 16, 2006
- Entity
- Type 1 · individual
Verify William Barnhart in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical BoardCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
86% fewer Medicare Part D claims than the average psychiatry physician in 2024
145 Medicare Part D claims, against an average of 1,010 among the 32,287 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Lamotrigine20 claims
- Caplyta13 claims
- Clonazepam11 claims
- Lithium Carbonate11 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.
Psychiatry Physician providers in Colorado
There are 954 psychiatry physician records in Colorado.
Other psychiatry physician records in Colorado
- Ari Aal, DOBoulder, CO1689162596
- Ellen Aal, PMHNPBoulder, CO1942120043
- Alec Aaronson, DOAurora, CO1972065233
- Galia Abadi, M.D.Parker, CO1407051378
- Daniel Abrams, MDAurora, CO1780732214
- William Acosta, MDAurora, CO1821338393
- Frances Adachi, MD, MPHDenver, CO1114395241
- Alexis Adams, NPColorado Springs, CO1881373736
- Matthew Adamson, MD, PHDDenver, CO1033859087
- Malia Addison, MDLittleton, CO1043871320
Common questions
What is William Barnhart, M.D.'s NPI number?
William Barnhart, M.D.'s National Provider Identifier (NPI) is 1770552267, issued on Mar 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Barnhart, M.D. located?
The NPPES record lists a practice address at 1721 Dolores River Dr, Windsor, CO, 80550. Phone: (970) 371-1143. Providers update this record themselves, so call before visiting.
How can I verify William Barnhart, M.D.'s license?
Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Barnhart, M.D. prescribe under Medicare Part D?
In 2024, William Barnhart, M.D. had 145 Medicare Part D claims; the average among psychiatry physician prescribers was 1,010. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.