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MS. MELISSA VILLANUEVA LCSW
NPI 1578100608
Social Worker - Clinical in Sacramento, CA

Active since December 09, 2019PECOS Enrolled
4150 V ST, SACRAMENTO, CA 95817(530) 574-0171 Get Directions Write a Review

NPPES record last updated: June 30, 2022. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Ms. Melissa Villanueva Lcsw NPPES

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

MS. MELISSA VILLANUEVA LCSW (NPI 1578100608) is an individual clinical provider in Sacramento, California, licensed in California (86529) and active in the NPI registry since December 2019. She is enrolled in Medicare PECOS and maintains a secondary practice location in Napa.

NPPES Registry Identity

NPI1578100608
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMS. MELISSA VILLANUEVACredential: LCSW
Location Address4150 V STSacramento, CA 95817-1460
Mailing Address4150 V StSacramento, CA 95817-1460 · (530) 574-0171
Phone(530) 574-0171
Sole ProprietorYes
Enumeration DateDecember 9, 2019
Last NPPES UpdateJune 30, 2022
NPPES CertifiedJune 30, 2022
✔ NPI 1578100608 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in CA · 86529
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
4150 V ST, Sacramento, CA 95817
Open in Google Maps ↗

Secondary Practice Location 1

Location 12751 Napa Valley Corporate Dr Bldg BNapa, CA 94558-6216 · Phone (707) 253-4279

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ms. Melissa Villanueva Lcsw 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 Melissa Villanueva reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Permanente Medical Group Inc
41 mi
Internal Medicine
7373 WEST LANE
Stockton, CA 95210
  • Reassigned Medicare billing, California enrollment
  • 20,078 clinicians in this Medicare group
NPI 1548343510 (209) 476-2000

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 95817 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
$0.00 typical visit price
range $60.44 – $180.85
Typical copayment $0.00 (range $15.11 – $45.21)
Most-billed visit code NA
Established Patient
$75.03 typical visit price
range $19.88 – $148.15
Typical copayment $18.75 (range $4.97 – $37.03)
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 20

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

KENNETH D. WHEELER CRNA
Nurse Anesthetist, Certified Registered
4150 V ST, PSSB-SUITE 1200, MED: ANESTHESIA
SACRAMENTO, CA 95817
Sacramento County (916) 734-7985
DR. MICHAEL JOHN THORNTON MD
Internal Medicine (Critical Care Medicine)
4150 V ST, SUITE 3400
SACRAMENTO, CA 95817
Sacramento County (916) 734-3566
THOMAS M. GOODNOW CRNA
Nurse Anesthetist, Certified Registered
4150 V ST, PSSB-SUITE 1200, MED: ANESTHESIA
SACRAMENTO, CA 95817
Sacramento County (916) 734-7985
DR. POURIA KASHKOULI M.D.
Internal Medicine
4150 V ST, #3116
SACRAMENTO, CA 95817
Sacramento County (916) 734-7080
DR. ALISON SEMRAD D.O.
Internal Medicine (Endocrinology, Diabetes & Metabolism)
4150 V ST, #3116
SACRAMENTO, CA 95817
Sacramento County (916) 734-7080
DR. DIANE HADDOCK M.D.
Internal Medicine
4150 V ST, #3116
SACRAMENTO, CA 95817
Sacramento County (916) 734-7080
JOHN S MILLAR M.D.
Internal Medicine (Critical Care Medicine)
4150 V ST, SUITE 3400
SACRAMENTO, CA 95817
Sacramento County (916) 734-3564
UC DAVIS
General Acute Care Hospital
4150 V ST, 2100
SACRAMENTO, CA 95817
Sacramento County (916) 734-8583

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 Melissa Villanueva's NPI number?

The NPI number for Melissa Villanueva is 1578100608. It was assigned to this individual provider in the NPPES registry on December 9, 2019.

Where is Melissa Villanueva located?

Melissa Villanueva practices at 4150 V St, Sacramento, CA 95817. The listed phone number is (530) 574-0171.

What is Melissa Villanueva's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

Is Melissa Villanueva enrolled in Medicare?

Yes. Melissa Villanueva is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Melissa Villanueva's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Melissa Villanueva reassigns Medicare benefits to Permanente Medical Group Inc (Stockton, CA). 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 Melissa Villanueva'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 Melissa Villanueva was last updated on June 30, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.