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DR. JOHN W WILLIAMS MD
NPI 1972943470
Psychiatry & Neurology - Psychiatry in Lafayette, CO

Active since June 28, 2013PECOS Enrolled
1455 DIXON AVE STE 300, LAFAYETTE, CO 80026(303) 443-8500(303) 413-6325 Get Directions Write a Review

NPPES record last updated: September 10, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 10, 2021, Sep 10, 2019 (2 updates tracked since 2019).

About Dr. John W Williams Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. JOHN W WILLIAMS MD (NPI 1972943470) is an individual psychiatry provider in Lafayette, Colorado, licensed in Colorado (DR.0066807) and active in the NPI registry since June 2013. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1972943470
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameDR. JOHN W WILLIAMSCredential: MD
Location Address1455 DIXON AVE STE 300Lafayette, CO 80026-8880
Mailing Address1455 Dixon Ave Ste 300Lafayette, CO 80026-8880 · (303) 443-8500 · Fax (303) 413-6325
Phone(303) 443-8500
Fax(303) 413-6325
Sole ProprietorNo
Enumeration DateJune 28, 2013
Last NPPES UpdateSeptember 10, 20212 updates tracked since enumeration
NPPES CertifiedSeptember 10, 2021
✔ NPI 1972943470 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in CO · DR.0066807
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
Also ListedPsychiatry & Neurology · Child & Adolescent PsychiatryTaxonomy 2084P0804X · License DR.0066807 (CO)
1455 DIXON AVE STE 300, Lafayette, CO 80026
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. John W Williams Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show John Williams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Clinica Campesina Family Health Services
Same address
Mental Health (Including Community Mental Health Center)
1455 DIXON AVE
Lafayette, CO 80026
  • Reassigned Medicare billing, Colorado enrollment
  • 183 clinicians in this Medicare group
NPI 1184460321 (303) 443-8500

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 80026 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$174.82 typical visit price
range $58.06 – $174.82
Typical copayment $43.70 (range $14.51 – $43.70)
Most-billed visit code 99205
Established Patient
$72.20 typical visit price
range $18.88 – $142.79
Typical copayment $18.05 (range $4.72 – $35.69)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 13

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. SHAWN EVETTE JOYNER NMD
Counselor (Mental Health)
1455 DIXON AVE STE 300
LAFAYETTE, CO 80026
Boulder County (303) 443-8500
MS. KELLY MEGAN SHEA
Social Worker
1455 DIXON AVE STE 300
LAFAYETTE, CO 80026
Boulder County (303) 443-8500
NICHOLAS WAYNE BUTKOVICH
Case Manager/Care Coordinator
1455 DIXON AVE STE 300
LAFAYETTE, CO 80026
Boulder County (303) 443-8500
RONNA L AUTREY
Counselor (Mental Health)
1455 DIXON AVE STE 300
LAFAYETTE, CO 80026
Boulder County (303) 443-8500
SONGHEE HAN
Student in an Organized Health Care Education/Training Program
1455 DIXON AVE STE 300
LAFAYETTE, CO 80026
Boulder County (303) 443-8500
MATTHEW CAVANNA
Counselor (Professional)
1455 DIXON AVE STE 300
LAFAYETTE, CO 80026
Boulder County (303) 443-8500
SUSAN NICHOLS
Technician, Other
1455 DIXON AVE STE 300
LAFAYETTE, CO 80026
Boulder County (303) 443-8500
MR. MANUEL GOMEZ SOLERA MA, LPC
Counselor (Professional)
1455 DIXON AVE STE 300
LAFAYETTE, CO 80026
Boulder County (303) 443-8500

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Williams's NPI number?

The NPI number for John Williams is 1972943470. It was assigned to this individual provider in the NPPES registry on June 28, 2013.

Where is John Williams located?

John Williams practices at 1455 Dixon Ave Ste 300, Lafayette, CO 80026. The listed phone number is (303) 443-8500.

What is John Williams's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is John Williams enrolled in Medicare?

Yes. John Williams is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for John Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John Williams reassigns Medicare benefits to Clinica Campesina Family Health Services (Lafayette, CO). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for John Williams was last updated on September 10, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.