1. Home
  2. Directory
  3. California
  4. Fremont
  5. Social Worker
  6. NPI Profile

CAROL S MARASIGAN
NPI 1649459819
Social Worker in Fremont, CA

Active since October 24, 2007PECOS EnrolledAccepts Medicare Assignment
2296 COUNTRY DR, FREMONT, CA 94536(510) 797-9299 Get Directions Write a Review

NPPES record last updated: October 24, 2007. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Carol S Marasigan NPPES

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

CAROL S MARASIGAN (NPI 1649459819) is an individual social worker in Fremont, California and active in the NPI registry since October 2007. She is enrolled in Medicare PECOS and is a graduate of Other (2004).

NPPES Registry Identity

NPI1649459819
Entity TypeIndividualFemale
Primary Taxonomy104100000X
Provider Legal NameCAROL S MARASIGAN
Location Address2296 COUNTRY DRFremont, CA 94536-5315
Mailing Address2296 Country DrFremont, CA 94536-5315
Phone(510) 797-9299
Sole ProprietorNo
Medical School CMSOtherGraduated 2004
Enumeration DateOctober 24, 2007
✔ NPI 1649459819 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial WorkerBehavioral Health & Social Service Providers
Taxonomy Code104100000X
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.
2296 COUNTRY DR, Fremont, CA 94536
Open in Google Maps ↗

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Carol S Marasigan is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2961815287
PECOS Enrollment IDI20210106000766
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 Carol Marasigan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Sutter Bay Medical Foundation
13 mi
Multi-Specialty
795 EL CAMINO REAL
Palo Alto, CA 94301
  • Reassigned Medicare billing, California enrollment
  • 4,479 clinicians in this Medicare group
NPI 1013950807 (650) 321-4121

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

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.

MARY AHMADI
Licensed Vocational Nurse
2296 COUNTRY DR
FREMONT, CA 94536
Alameda County (510) 792-3555
ASMA PATRAS RN
Registered Nurse (Case Management)
2296 COUNTRY DR
FREMONT, CA 94536
Alameda County (510) 797-9299
CASSANDRA DAGINO
Registered Nurse
2296 COUNTRY DR
FREMONT, CA 94536
Alameda County (510) 792-3733
JUDITH HANSELL RN
Registered Nurse
2296 COUNTRY DR
FREMONT, CA 94536
Alameda County (510) 608-3700
CAROL BUNN RN
Registered Nurse
2296 COUNTRY DR
FREMONT, CA 94536
Alameda County (510) 797-9299
EVELYN HAIRSTON HHA, CNA
Nurse's Aide
2296 COUNTRY DR
FREMONT, CA 94536
Alameda County (510) 797-9299
BRIDGET THOMAS
Licensed Vocational Nurse
2296 COUNTRY DR
FREMONT, CA 94536
Alameda County (510) 608-3733
AILEEN GUZMAN R.N.
Registered Nurse
2296 COUNTRY DR
FREMONT, CA 94536
Alameda County (510) 797-9299

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 Carol Marasigan's NPI number?

The NPI number for Carol Marasigan is 1649459819. It was assigned to this individual provider in the NPPES registry on October 24, 2007.

Where is Carol Marasigan located?

Carol Marasigan practices at 2296 Country Dr, Fremont, CA 94536. The listed phone number is (510) 797-9299.

What is Carol Marasigan's specialty?

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

Is Carol Marasigan enrolled in Medicare?

Yes. Carol Marasigan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Carol Marasigan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Carol Marasigan reassigns Medicare benefits to Sutter Bay Medical Foundation (Palo Alto, 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 Carol Marasigan'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 Carol Marasigan was last updated on October 24, 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.