MARTHA LETICIA HAMMONS MSW
NPI 1326510157
Social Worker in Fairfield, CA

Q: What is Martha Hammons's NPI number?

The NPI number for Martha Hammons is 1326510157. It was assigned to this individual provider in the NPPES registry on December 18, 2018.

Q: What is Martha Hammons's specialty?

The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.

Q: When was this NPI record last updated?

The NPPES record for Martha Hammons was last updated on May 23, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.

Active since December 18, 2018PECOS Enrolled

275 BECK AVE # MS 5-120, FAIRFIELD, CA 94533(707) 784-8114(707) 428-6542 Get Directions Write a Review

NPPES record last updated: May 23, 2023. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: May 23, 2023, Dec 8, 2020, Oct 7, 2019 and 1 more (4 updates tracked since 2018).

On this page

About Martha Leticia Hammons Msw NPPES

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

MARTHA LETICIA HAMMONS MSW (NPI 1326510157) is an individual social worker in Fairfield, California, licensed in California (88084) and active in the NPI registry since December 2018. She is enrolled in Medicare PECOS and is a graduate of Other (2012).

NPPES Registry Identity

NPI1326510157

Entity TypeIndividualFemale

Primary Taxonomy104100000X

Provider Legal NameMARTHA LETICIA HAMMONSCredential: MSW

Location Address275 BECK AVE # MS 5-120Fairfield, CA 94533-6804

Mailing Address275 Beck Ave # Ms 5-120Fairfield, CA 94533-6804 · (707) 784-8114 · Fax (707) 428-6542

Phone(707) 784-8114

Fax(707) 428-6542

Sole ProprietorNo

Medical School CMSOtherGraduated 2012

Enumeration DateDecember 18, 2018

Last NPPES UpdateMay 23, 20234 updates tracked since enumeration

NPPES CertifiedMay 23, 2023

✔ NPI 1326510157 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtySocial WorkerBehavioral Health & Social Service Providers

Taxonomy Code104100000X

License✔ Licensed in CA · 88084

Definition

A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.

Also ListedCounselor · Mental HealthTaxonomy 101YM0800X · License ASW86566 (CA)

Also ListedSocial Worker · ClinicalTaxonomy 1041C0700X · License 88084 (CA)

275 BECK AVE # MS 5-120, Fairfield, CA 94533

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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)

Martha Leticia Hammons Msw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID7810487386

PECOS Enrollment IDI20251104003745

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 Martha Hammons reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

County Of Solano

Same address

Public Health or Welfare

275 BECK AVENUE MS 5210
Fairfield, CA 94533

Reassigned Medicare billing, California enrollment
73 clinicians in this Medicare group

NPI 1508072588 (707) 784-8571

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

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 Hammons's NPI number?

The NPI number for Martha Hammons is 1326510157. It was assigned to this individual provider in the NPPES registry on December 18, 2018.

Where is Martha Hammons located?

Martha Hammons practices at 275 Beck Ave # Ms 5-120, Fairfield, CA 94533. The listed phone number is (707) 784-8114.

What is Martha Hammons's specialty?

The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.

Is Martha Hammons enrolled in Medicare?

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

Which organization bills Medicare for Martha Hammons's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Martha Hammons reassigns Medicare benefits to County Of Solano (Fairfield, 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 Martha Hammons'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 Hammons was last updated on May 23, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.