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MARK IZQUIERDO-GALLEGOS
NPI 1659740520
Social Worker - Clinical in Covina, CA

Active since September 21, 2015PECOS Enrolled
1359 N GRAND AVE, COVINA, CA 91724(626) 430-2900 Get Directions Write a Review

NPPES record last updated: December 9, 2019. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Dec 9, 2019, Nov 1, 2019, Jul 11, 2016 (3 updates tracked since 2016).

About Mark Izquierdo-gallegos NPPES

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

MARK IZQUIERDO-GALLEGOS (NPI 1659740520) is an individual clinical provider in Covina, California, licensed in California (93163) and active in the NPI registry since September 2015. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1659740520
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameMARK IZQUIERDO-GALLEGOS
Location Address1359 N GRAND AVECovina, CA 91724-1016
Mailing Address1359 N Grand AveCovina, CA 91724-1016 · (626) 430-2900
Phone(626) 430-2900
Sole ProprietorNo
Enumeration DateSeptember 21, 2015
Last NPPES UpdateDecember 9, 20193 updates tracked since enumeration
✔ NPI 1659740520 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in CA · 93163
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.
Also ListedCounselor · Mental HealthTaxonomy 101YM0800X · License 71573 (CA)
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
1359 N GRAND AVE, Covina, CA 91724
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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)

Mark Izquierdo-gallegos 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 Mark Izquierdo-gallegos reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Los Angeles County Department Of Mental Health
Same address
Mental Health (Including Community Mental Health Center)
1359 N GRAND AVE
Covina, CA 91724
  • Reassigned Medicare billing, California enrollment
  • 533 clinicians in this Medicare group
NPI 1093921439 (626) 430-2800
Sud Specialty Group - Ca
324 mi
Addiction Medicine
4633 OLD IRONSIDES DR STE 304
Santa Clara, CA 95054
  • Reassigned Medicare billing, California enrollment
  • 1,607 clinicians in this Medicare group
NPI 1972138238 (323) 205-7088

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 91724 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 $62.96 – $187.60
Typical copayment $0.00 (range $15.74 – $46.90)
Most-billed visit code NA
Established Patient
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
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.

RAMON GONZALEZ
Rehabilitation Practitioner
1359 N GRAND AVE
COVINA, CA 91724
Los Angeles County (562) 500-9847
DR. MA'SHA SMITH PSYD, PPS
Psychologist
1359 N GRAND AVE
COVINA, CA 91724
Los Angeles County (626) 430-2908
TRACY ORTEGA
Case Manager/Care Coordinator
1359 N GRAND AVE
COVINA, CA 91724
Los Angeles County (626) 430-2906
LOS ANGELES COUNTY DEPARTMENT OF MENTAL HEALTH
Clinic/Center (Mental Health (Including Community Mental Health Center))
1359 N GRAND AVE
COVINA, CA 91724
Los Angeles County (626) 430-2900
ALISON CHING
Counselor (Mental Health)
1359 N GRAND AVE
COVINA, CA 91724
Los Angeles County (626) 430-2961
MR. ERIK RAYMUNDO STONE BA
Student in an Organized Health Care Education/Training Program
1359 N GRAND AVE
COVINA, CA 91724
Los Angeles County (626) 430-2900
MISS TIFFANY GRANJA
Social Worker (Clinical)
1359 N GRAND AVE
COVINA, CA 91724
Los Angeles County (626) 430-2875
JACQUI CHENG
Marriage & Family Therapist
1359 N GRAND AVE
COVINA, CA 91724
Los Angeles County (626) 430-2832

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 Mark Izquierdo-gallegos's NPI number?

The NPI number for Mark Izquierdo-gallegos is 1659740520. It was assigned to this individual provider in the NPPES registry on September 21, 2015.

Where is Mark Izquierdo-gallegos located?

Mark Izquierdo-gallegos practices at 1359 N Grand Ave, Covina, CA 91724. The listed phone number is (626) 430-2900.

What is Mark Izquierdo-gallegos's specialty?

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

Is Mark Izquierdo-gallegos enrolled in Medicare?

Yes. Mark Izquierdo-gallegos is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Mark Izquierdo-gallegos's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Izquierdo-gallegos reassigns Medicare benefits to 2 organizations: Los Angeles County Department Of Mental Health (Covina, CA) and Sud Specialty Group - Ca (Santa Clara, 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 Mark Izquierdo-gallegos'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 Mark Izquierdo-gallegos was last updated on December 9, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.