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DR. MELVIN WALKER WILLIAMS M.D.
NPI 1033322730
Psychiatry & Neurology - Psychiatry in Washington, DC

Active since May 08, 2007PECOS Enrolled
3020 14TH STREET NW, SUITE 402B, WASHINGTON, DC 20009(202) 745-4300(202) 232-0723 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Melvin Walker Williams M.d. NPPES

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

DR. MELVIN WALKER WILLIAMS M.D. (NPI 1033322730) is an individual psychiatry provider in Washington, District Of Columbia, licensed in District Of Columbia (MD25482) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1033322730
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameDR. MELVIN WALKER WILLIAMSCredential: M.D.
Location Address3020 14TH STREET NW, SUITE 402BWashington, DC 20009
Mailing Address3020 14th Street Nw, Suite 402bWashington, DC 20009 · (202) 745-4300 · Fax (202) 232-0723
Phone(202) 745-4300
Fax(202) 232-0723
Sole ProprietorNo
Enumeration DateMay 8, 2007
Last NPPES UpdateJuly 8, 2007
✔ NPI 1033322730 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in DC · MD25482
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.
3020 14TH STREET NW, Washington, DC 20009
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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. Melvin Walker Williams M.d. 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 Melvin Williams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Anchor Mental Health Association
2.2 mi
Mental Health (Including Community Mental Health Center)
1001 LAWRENCE ST NE
Washington, DC 20017
  • Reassigned Medicare billing, District of Columbia enrollment
  • 15 clinicians in this Medicare group
NPI 1417029935 (202) 635-5900

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 20009 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
$194.86 typical visit price
range $65.18 – $194.86
Typical copayment $48.71 (range $16.29 – $48.71)
Most-billed visit code 99205
Established Patient
$80.66 typical visit price
range $21.40 – $158.88
Typical copayment $20.16 (range $5.35 – $39.72)
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

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

JEANNE MARIE CHEVILLET FNP
Nurse Practitioner (Family)
3020 14TH STREET NW, UPPER CARDOZO HEALTH CENTER
WASHINGTON, DC 20009
District of Columbia (202) 612-3136

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 Melvin Williams's NPI number?

The NPI number for Melvin Williams is 1033322730. It was assigned to this individual provider in the NPPES registry on May 8, 2007.

Where is Melvin Williams located?

Melvin Williams practices at 3020 14th Street NW Suite 402B, Washington, DC 20009. The listed phone number is (202) 745-4300.

What is Melvin Williams's specialty?

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

Is Melvin Williams enrolled in Medicare?

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

Which organization bills Medicare for Melvin Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Melvin Williams reassigns Medicare benefits to Anchor Mental Health Association (Washington, DC). 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 Melvin 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 Melvin Williams was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.