John W. Williams, MD
Psychiatry Physician · Lafayette, CO
John W. Williams, MD is a psychiatry physician with a practice address in Lafayette, Colorado, and NPI 1972943470, issued on Jun 28, 2013. Check the license (Colorado DR.0066807, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- John W. Williams
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- DR.0066807 CO
Self-reported in NPPES; status is on the state search - Practice location
- 1455 Dixon Ave Ste 300, Lafayette, CO 80026
- Phone
- (303) 443-8500
- Enumerated
- Jun 28, 2013
- Record last updated
- Sep 10, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (303) 413-6325
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 990 in Colorado → Look up another NPI →
Also registered at 1455 Dixon Ave Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ronna AutreyMental Health Counselor1326528951
- Nicholas ButkovichCase Manager/Care Coordinator1316591092
- Matthew CavannaProfessional Counselor1497302319
- Manuel Gomez Solera, MA, LPCProfessional Counselor1609125491
- Guy Guinn, B.S.Mental Health Counselor1700910221
- Songhee HanStudent in an Organized Health Care Education/Training Program1326824111
Verify John W. Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license DR.0066807Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
70% fewer Medicare Part D claims than the average psychiatry physician in 2024
299 Medicare Part D claims for 20 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Quetiapine Fumarate25 claims
- Lorazepam21 claims
- Fluoxetine Hcl18 claims
- Olanzapine18 claims
- Clonazepam16 claims
- Bupropion Xl15 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.
John W. Williams among 990 psychiatry physician records in Colorado
John W. Williams, 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 2013, is newer than 73% of them.
- NPI issued2013 · 73% of these records are older, 25% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileNo · 35% of these records are
- Record last updated2021 · 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 Lafayette → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Eric HaalandLafayette, CO 800261275092181
- Colette Kendrick, MDLafayette, CO 800261073074019
- Meredith Mealer, PMHNP, PHDLafayette, CO 800261386276996
- Gauhar Raina, M.D.Lafayette, CO 800261699391599
- Anna Shapiro, M.D.Lafayette, CO 800261043503808
- Brian Anderson, M.D.Louisville, CO 800271417058496
- Sascha Arbouet, MDSuperior, CO 800271336355130
- Michael ChamberlainLouisville, CO 800271609339506
Common questions
What is John W. Williams, MD's NPI number?
John W. Williams, MD's National Provider Identifier (NPI) is 1972943470, issued on Jun 28, 2013. An NPI identifies a provider in billing; it is not a license.
Where is John W. Williams, MD located?
The NPPES record lists a practice address at 1455 Dixon Ave Ste 300, Lafayette, CO, 80026. Phone: (303) 443-8500. Providers update this record themselves, so call before visiting.
How can I verify John W. Williams, MD's license?
NPPES lists Colorado license number DR.0066807, 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 John W. Williams, MD prescribe under Medicare Part D?
In 2024, John W. Williams, MD had 299 Medicare Part D claims for 20 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.