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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MARIA BATES NURSE PRACTITIONER
NPI 1184413502
Nurse Practitioner - Psychiatric/Mental Health in Los Angeles, CA

Active since May 02, 2025PECOS Enrolled
1891 EFFIE ST, LOS ANGELES, CA 90026(323) 644-2000(323) 644-2000 Get Directions Write a Review

NPPES record last updated: October 21, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Maria Bates Nurse Practitioner NPPES

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

MARIA BATES NURSE PRACTITIONER (NPI 1184413502) is an individual psychiatric/mental health provider in Los Angeles, California, licensed in California (95033144) and active in the NPI registry since May 2025. She is enrolled in Medicare PECOS and maintains a secondary practice location in Corona.

NPPES Registry Identity

NPI1184413502
Entity TypeIndividualFemale
Primary Taxonomy363LP0808X
Provider Legal NameMARIA BATESCredential: NURSE PRACTITIONER
Location Address1891 EFFIE STLos Angeles, CA 90026-1711
Mailing Address655 N Towne AvePomona, CA 91767-4827 · (323) 799-5428 · Fax (888) 402-2304
Phone(323) 644-2000
Fax(323) 644-2000
Sole ProprietorNo
Enumeration DateMay 2, 2025
Last NPPES UpdateOctober 21, 2026
NPPES CertifiedOctober 21, 2026
✔ NPI 1184413502 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
License✔ Licensed in CA · 95033144
1891 EFFIE ST, Los Angeles, CA 90026
Open in Google Maps ↗

Secondary Practice Location 1

Location 1495 E Rincon St Ste 100Corona, CA 92879-1306 · Phone (888) 662-9378 · Fax (888) 402-2304

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Maria Bates Nurse Practitioner 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 Reassignment

Medicare enrollment records show Maria Bates reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Gateways Hospital & Mental Health Center
Same address
Psychiatric Hospital
1891 EFFIE ST
Los Angeles, CA 90026
  • Reassigned Medicare billing, California enrollment
  • 25 clinicians in this Medicare group
NPI 1720151137 (323) 644-2000

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 90026 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
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
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.

LEANNE ASHLEY RICHTER
Marriage & Family Therapist
1891 EFFIE ST
LOS ANGELES, CA 90026
Los Angeles County (661) 222-7078
JENNY MIN DIN
Student in an Organized Health Care Education/Training Program
1891 EFFIE ST
LOS ANGELES, CA 90026
Los Angeles County (323) 644-2000
ASHLEY ALVARADO CERVANTES
Rehabilitation Practitioner
1891 EFFIE ST
LOS ANGELES, CA 90026
Los Angeles County (323) 644-2000
GATEWAYS HOSPITAL AND MENTAL HEALTH CENTER
Clinic/Center (Rehabilitation, Substance Use Disorder)
1891 EFFIE ST
LOS ANGELES, CA 90026
Los Angeles County (323) 644-2000
ESTEBAN GARCIA RN
Registered Nurse (Psychiatric/Mental Health)
1891 EFFIE ST
LOS ANGELES, CA 90026
Los Angeles County (323) 644-2000
MS. ESPERANZA MADRIGAL M.S.W.
Social Worker (Clinical)
1891 EFFIE ST
LOS ANGELES, CA 90026
Los Angeles County (323) 664-2000
DR. IMANI JEHAN WALKER D.O.
Psychiatry & Neurology (Psychiatry)
1891 EFFIE ST
LOS ANGELES, CA 90026
Los Angeles County (323) 644-2000
JAMIE LEIGH NIERENBERG PSYD
Psychologist (Clinical)
1891 EFFIE ST
LOS ANGELES, CA 90026
Los Angeles County (323) 644-2000

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 Maria Bates's NPI number?

The NPI number for Maria Bates is 1184413502. It was assigned to this individual provider in the NPPES registry on May 2, 2025.

Where is Maria Bates located?

Maria Bates practices at 1891 Effie St, Los Angeles, CA 90026. The listed phone number is (323) 644-2000.

What is Maria Bates's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Is Maria Bates enrolled in Medicare?

Yes. Maria Bates is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Maria Bates's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Maria Bates reassigns Medicare benefits to Gateways Hospital & Mental Health Center (Los Angeles, 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 Maria Bates'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 Maria Bates was last updated on October 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 days 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.