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MISS MARTHA ANGELICA ALAMILLO
NPI 1639200801
Social Worker - Clinical in Napa, CA

Active since March 08, 2007PECOS Enrolled
2751 NAPA VALLEY CORPORATE DR BLDG A, NAPA, CA 94558(707) 259-8151 Get Directions Write a Review

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

About Miss Martha Angelica Alamillo NPPES

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

MISS MARTHA ANGELICA ALAMILLO (NPI 1639200801) is an individual clinical provider in Napa, California, licensed in California (24465) and active in the NPI registry since March 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1639200801
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMISS MARTHA ANGELICA ALAMILLO
Location Address2751 NAPA VALLEY CORPORATE DR BLDG ANapa, CA 94558-6216
Mailing Address2751 Napa Valley Corporate Dr Bldg ANapa, CA 94558-6216 · (707) 253-4279
Phone(707) 259-8151
Sole ProprietorNo
Enumeration DateMarch 8, 2007
Last NPPES UpdateAugust 18, 2021
NPPES CertifiedAugust 9, 2021
✔ NPI 1639200801 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
Licenses✔ Licensed in CA · 24465✔ Licensed in CA · 14471
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.
2751 NAPA VALLEY CORPORATE DR BLDG A, Napa, CA 94558
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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)

Miss Martha Angelica Alamillo 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 Reassignments

2

Medicare enrollment records show Martha Alamillo reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

County Of Napa
Same address
Community/Behavioral Health
2751 NAPA VALLEY CORPORATE DR, BLDGS - A & B
Napa, CA 94558
  • Reassigned Medicare billing, California enrollment
  • 39 clinicians in this Medicare group
NPI 1164572426 (707) 253-4662
Permanente Medical Group Inc
8.5 mi
Internal Medicine
975 SERENO DRIVE
Vallejo, CA 94589
  • Reassigned Medicare billing, California enrollment
  • 20,078 clinicians in this Medicare group
NPI 1336222397 (707) 651-1000

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 94558 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 $65.08 – $192.16
Typical copayment $0.00 (range $16.27 – $48.04)
Most-billed visit code NA
Established Patient
$80.32 typical visit price
range $21.86 – $157.83
Typical copayment $20.08 (range $5.46 – $39.45)
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.

ROSA MARIA GONZALEZ
Counselor (Mental Health)
2751 NAPA VALLEY CORPORATE DR BLDG A
NAPA, CA 94558
Napa County (707) 253-4103
NICOLE PATRICIA NUNEZ
Student in an Organized Health Care Education/Training Program
2751 NAPA VALLEY CORPORATE DR BLDG A
NAPA, CA 94558
Napa County (707) 259-8721
DR. MARIA DAISY ILANO M.D.
Psychiatry & Neurology (Psychiatry)
2751 NAPA VALLEY CORPORATE DR BLDG A
NAPA, CA 94558
Napa County (072) 534-7277
RUBICELA MATIAS
Student in an Organized Health Care Education/Training Program
2751 NAPA VALLEY CORPORATE DR BLDG A
NAPA, CA 94558
Napa County (707) 299-1760
MS. MONICA GEORGINA MENJIVAR
Counselor (Mental Health)
2751 NAPA VALLEY CORPORATE DR BLDG A
NAPA, CA 94558
Napa County (707) 299-1482
RACHEL LINDSEY
Social Worker (Clinical)
2751 NAPA VALLEY CORPORATE DR BLDG A
NAPA, CA 94558
Napa County (707) 812-5266
ADILENE PLANCARTE
Case Manager/Care Coordinator
2751 NAPA VALLEY CORPORATE DR BLDG A
NAPA, CA 94558
Napa County (707) 309-1966
MRS. DIANE LYNN BUCHANAN RN
Registered Nurse (Community Health)
2751 NAPA VALLEY CORPORATE DR BLDG A
NAPA, CA 94558
Napa County (707) 253-4727

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 Martha Alamillo's NPI number?

The NPI number for Martha Alamillo is 1639200801. It was assigned to this individual provider in the NPPES registry on March 8, 2007.

Where is Martha Alamillo located?

Martha Alamillo practices at 2751 Napa Valley Corporate Dr Bldg A, Napa, CA 94558. The listed phone number is (707) 259-8151.

What is Martha Alamillo's specialty?

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

Is Martha Alamillo enrolled in Medicare?

Yes. Martha Alamillo is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Martha Alamillo's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Martha Alamillo reassigns Medicare benefits to 2 organizations: County Of Napa (Napa, CA) and Permanente Medical Group Inc (Vallejo, CA). Each 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 Martha Alamillo'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 Martha Alamillo was last updated on August 18, 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.