Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

TESSA MALLOY WILLIAMS DNP, PMHNP
NPI 1932530532
Nurse Practitioner - Psychiatric/Mental Health in Phoenix, AZ

Q: What is Tessa Williams's NPI number?

The NPI number for Tessa Williams is 1932530532. It was assigned to this individual provider in the NPPES registry on December 6, 2013.

Q: What is Tessa Williams's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Q: When was this NPI record last updated?

The NPPES record for Tessa Williams was last updated on October 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 days 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.

Active since December 06, 2013PECOS Enrolled

4616 N 51ST AVE STE 108, PHOENIX, AZ 85031(602) 285-6800 Get Directions Write a Review

NPPES record last updated: October 23, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

On this page

About Tessa Malloy Williams Dnp, Pmhnp NPPES

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

TESSA MALLOY WILLIAMS DNP, PMHNP (NPI 1932530532) is an individual psychiatric/mental health provider in Phoenix, Arizona, licensed in Arizona (218561) and active in the NPI registry since December 2013. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1932530532

Entity TypeIndividualFemale

Primary Taxonomy363LP0808X

Provider Legal NameTESSA MALLOY WILLIAMSCredential: DNP, PMHNP

Location Address4616 N 51ST AVE STE 108Phoenix, AZ 85031-1720

Mailing Address4616 N 51st Ave Ste 108Phoenix, AZ 85031-1720 · (602) 285-6800

Phone(602) 285-6800

Sole ProprietorNo

Enumeration DateDecember 6, 2013

Last NPPES UpdateOctober 23, 2026

NPPES CertifiedOctober 23, 2026

✔ NPI 1932530532 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363LP0808X

License✔ Licensed in AZ · 218561

4616 N 51ST AVE STE 108, Phoenix, AZ 85031

Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Tessa Malloy Williams Dnp, Pmhnp 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 85031 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

$85.89 typical visit price

range $55.44 – $168.60

Typical copayment $21.47 (range $13.86 – $42.15)

Most-billed visit code 99203

Established Patient

$98.00 typical visit price

range $17.72 – $137.41

Typical copayment $24.50 (range $4.43 – $34.35)

Most-billed visit code 99214

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 12

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

GENOA HEALTHCARE LLC

Pharmacy (Long Term Care Pharmacy)