William Joel Karls, MD
Psychiatry Physician · Montrose, CO
William Joel Karls, MD is a psychiatry physician with a practice address in Montrose, Colorado, and NPI 1770524183, issued on Jun 9, 2006. Check the license (Colorado 34130, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- William Joel Karls
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 34130 CO
Self-reported in NPPES; status is on the state search - Practice location
- 605 Miami RD, Montrose, CO 81401
- Phone
- (970) 252-3200
- Enumerated
- Jun 9, 2006
- Record last updated
- Feb 9, 2026
- Fax
- (970) 249-8793
- Medicare enrollment
- Enrolled (PECOS I20040225000367); accepts Medicare assignment
- Medical or professional school
- University Of Nebraska College Of Medicine, 1983
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 990 in Colorado → Look up another NPI →
Also registered at 605 Miami RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Rebecca BenzelProfessional Counselor1114341351
- Mielle BottomlyProfessional Counselor1649630344
- Merri Brennecke, RNPsychiatric/Mental Health Registered Nurse1013722370
- Kathleen Burnell, MAProfessional Counselor1184072399
- Megan Chaney, MAProfessional Counselor1104450030
Verify William Joel Karls in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 34130Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.5 times the Medicare Part D claims of the average psychiatry physician in 2024
2,477 Medicare Part D claims for 103 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 2% of claims.
Most prescribed
- Aripiprazole239 claims
- Trazodone Hcl182 claims
- Buspirone Hcl178 claims
- Sertraline Hcl149 claims
- Quetiapine Fumarate143 claims
- Lorazepam131 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.
Bills Medicare through one group practice
- Southwest Colorado Mental Health Center IncDurango, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Joel Karls among 990 psychiatry physician records in Colorado
William Joel Karls, MD is one of 990 psychiatry physician records with a practice address in Colorado. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 62% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 35% of these records are
- Graduated1983 · median 2009 among the 351 with a school on file
- Record last updated2026 · 55% 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 Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatry Physician providers in Colorado
There are 990 psychiatry physician records in Colorado.
All 990 in Colorado → Every provider in Montrose → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Tom Campbell, MDMontrose, CO 814011477597912
- David Good, M.D.Montrose, CO 814011376674614
- Michael Gower, M.D.Montrose, CO 814011265660104
- Patti Snodgrass, MDMontrose, CO 814011033295894
- Richard Wallingford, M.D.Montrose, CO 814011679517007
- Aaron Montano, MDCortez, CO 813211801280201
- Steve Kitson, MDDurango, CO 813031255518957
- Anita Kumar, MDDurango, CO 813031629295894
Common questions
What is William Joel Karls, MD's NPI number?
William Joel Karls, MD's National Provider Identifier (NPI) is 1770524183, issued on Jun 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Joel Karls, MD located?
The NPPES record lists a practice address at 605 Miami RD, Montrose, CO, 81401. Phone: (970) 252-3200. Providers update this record themselves, so call before visiting.
How can I verify William Joel Karls, MD's license?
NPPES lists Colorado license number 34130, as entered by the provider. 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 Joel Karls, MD prescribe under Medicare Part D?
In 2024, William Joel Karls, MD had 2,477 Medicare Part D claims for 103 beneficiaries; 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.