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GEMMA SANTIAGO LCSW
NPI 1548743107
Social Worker - Clinical in Chula Vista, CA

Active since September 10, 2018PECOS Enrolled
333 H ST STE 5000, CHULA VISTA, CA 91910(619) 289-5924 Get Directions Write a Review

NPPES record last updated: February 20, 2024. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Gemma Santiago Lcsw NPPES

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

GEMMA SANTIAGO LCSW (NPI 1548743107) is an individual clinical provider in Chula Vista, California and active in the NPI registry since September 2018. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1548743107
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameGEMMA SANTIAGOCredential: LCSW
Location Address333 H ST STE 5000Chula Vista, CA 91910-5561
Mailing Address1548 Sherman DrChula Vista, CA 91911-6927 · (619) 289-5924
Phone(619) 289-5924
Sole ProprietorNo
Enumeration DateSeptember 10, 2018
Last NPPES UpdateFebruary 20, 2024
NPPES CertifiedFebruary 20, 2024
✔ NPI 1548743107 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
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.
333 H ST STE 5000, Chula Vista, CA 91910
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Gemma Santiago 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 Reassignments

3

Medicare enrollment records show Gemma Santiago reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Upkeep Mental Health Solutions Inc
1.4 mi
Clinical
1548 SHERMAN DR
Chula Vista, CA 91911
  • Reassigned Medicare billing, California enrollment
NPI 1831016179 (619) 289-5924
Cyti Health PC
10 mi
Mental Health (Including Community Mental Health Center)
402 W BROADWAY STE 400
San Diego, CA 92101
  • Reassigned Medicare billing, California enrollment
  • 545 clinicians in this Medicare group
NPI 1679172290 (866) 478-3978
San Diego American Indian Health Center
11 mi
Addiction (Substance Use Disorder)
2630 1ST AVE
San Diego, CA 92103
  • Reassigned Medicare billing, California enrollment
  • 51 clinicians in this Medicare group
NPI 1003902917 (619) 234-2158

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 91910 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 $62.10 – $184.71
Typical copayment $0.00 (range $15.52 – $46.17)
Most-billed visit code NA
Established Patient
$76.87 typical visit price
range $20.62 – $151.42
Typical copayment $19.21 (range $5.15 – $37.85)
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 11

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

MS. BRENNA FRIGO
Marriage & Family Therapist
333 H ST STE 5000
CHULA VISTA, CA 91910
San Diego County (619) 616-2969
LOW COST MOBILITY INC
Durable Medical Equipment & Medical Supplies
333 H ST STE 5000
CHULA VISTA, CA 91910
San Diego County (619) 757-0972
MS. JEANNE ELIZABETH WILCOX LMFT
Marriage & Family Therapist
333 H ST STE 5000
CHULA VISTA, CA 91910
San Diego County (619) 246-5611
MR. WALTER KELLY H.I.S.
Hearing Instrument Specialist
333 H ST STE 5000
CHULA VISTA, CA 91910
San Diego County (619) 349-5410
LATAM MEDICAL NETWORK INC
Clinic/Center (Urgent Care)
333 H ST STE 5000
CHULA VISTA, CA 91910
San Diego County (619) 988-6512
NEUROMINDS FAMILY THERAPY
Counselor (Mental Health)
333 H ST STE 5000
CHULA VISTA, CA 91910
San Diego County (619) 616-2969
LOW COST MOBILITY, INC.
Durable Medical Equipment & Medical Supplies
333 H ST STE 5000
CHULA VISTA, CA 91910
San Diego County (702) 410-6323
CA HEARING LLC
Hearing Instrument Specialist
333 H ST STE 5000
CHULA VISTA, CA 91910
San Diego County (619) 349-5410

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 Gemma Santiago's NPI number?

The NPI number for Gemma Santiago is 1548743107. It was assigned to this individual provider in the NPPES registry on September 10, 2018.

Where is Gemma Santiago located?

Gemma Santiago practices at 333 H St Ste 5000, Chula Vista, CA 91910. The listed phone number is (619) 289-5924.

What is Gemma Santiago's specialty?

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

Is Gemma Santiago enrolled in Medicare?

Yes. Gemma Santiago is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Gemma Santiago's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gemma Santiago reassigns Medicare benefits to 3 organizations: Upkeep Mental Health Solutions Inc (Chula Vista, CA), Cyti Health PC (San Diego, CA) and San Diego American Indian Health Center (San Diego, 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 Gemma Santiago's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gemma Santiago accept?

Health plans from Anthem Blue Cross and Blue Shield list Gemma Santiago as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Gemma Santiago was last updated on February 20, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.