HEALTH SERVICE ALLIANCE
NPI 1336858943
Psychologist in Rancho Cucamonga, CA

Active since November 22, 2022
9089 BASE LINE RD STE 200, RANCHO CUCAMONGA, CA 91730(909) 980-3567(909) 989-3932 Get Directions Write a Review

NPPES record last updated: November 22, 2022. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Health Service Alliance NPPES

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

HEALTH SERVICE ALLIANCE (NPI 1336858943), doing business as Alta Loma Community Health Center, is a healthcare organization registered as a psychologist in Rancho Cucamonga, California and active in the NPI registry since November 2022. The organization lists Jeffrey J Cox, Cfo, as its authorized official.

NPPES Registry Identity

NPI1336858943
Entity TypeOrganization
Primary Taxonomy103T00000X
Legal Business NameHEALTH SERVICE ALLIANCE
Location Address9089 BASE LINE RD STE 200Rancho Cucamonga, CA 91730-1295
Mailing Address9089 Base Line Rd Ste 200Rancho Cucamonga, CA 91730-1295 · (909) 980-3567 · Fax (909) 989-3932
Fax(909) 989-3932
Organization SubpartNo
Authorized OfficialJeffrey J CoxCfo · (909) 464-9675
Enumeration DateNovember 22, 2022
NPPES CertifiedNovember 22, 2022
✔ NPI 1336858943 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
Definition
A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.
9089 BASE LINE RD STE 200, Rancho Cucamonga, CA 91730

Other Names 1

Doing Business AsAlta Loma Community Health Center

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Health Service Alliance is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

14

Medicare enrollment records show 14 clinicians reassign Medicare billing to Health Service Alliance, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 6 within 10 miles. They are listed nearest first.

Clinicians by Medicare Specialty 6

Nurse Practitioner6
Family Practice3
Internal Medicine2
Clinical Psychologist1
Clinical Social Worker1
Pediatric Medicine1

Clinicians, nearest first (14)

Nurse Practitioner
NPI 1083463996
9089 BASE LINE RD STE 200
Rancho Cucamonga, CA 91730
(909) 980-3567
✔ PECOSSame address
Nurse Practitioner
NPI 1437876760
954 W FOOTHILL BLVD STE A
Upland, CA 91786
(909) 846-4222
✔ PECOS3.4 mi
Family Practice
NPI 1285633867
13193 CENTRAL AVE STE. 100
Chino, CA 91710
(909) 464-9675
✔ PECOS8.7 mi
Clinical Social Worker
NPI 1144790890
13193 CENTRAL AVE STE 200
Chino, CA 91710
(909) 902-9111
✔ PECOS8.7 mi
Family Practice
NPI 1467036012
13193 CENTRAL AVE STE 100
Chino, CA 91710
(909) 464-9675
✔ PECOS8.7 mi
Internal Medicine
NPI 1922042076
13193 CENTRAL AVE STE 100
Chino, CA 91710
(909) 464-9675
✔ PECOS8.7 mi
Pediatric Medicine
NPI 1750895934
11980 MOUNT VERNON AVE
Grand Terrace, CA 92313
(954) 355-4400
✔ PECOS18 mi
Nurse Practitioner
NPI 1649754292
1906 COMMERCENTER E STE 210
San Bernardino, CA 92408
(909) 567-2575
✔ PECOS19 mi
Nurse Practitioner
NPI 1235704750
1135 S SUNSET AVE STE 401
West Covina, CA 91790
(626) 732-8393
✔ PECOS20 mi
Internal Medicine
NPI 1356521843
2021 E 4TH ST STE 122
Santa Ana, CA 92705
(909) 496-1195
✔ PECOS✔ Accepts Medicare29 mi
Clinical Psychologist
NPI 1588323133
1055 E COLORADO BLVD FL 5
Pasadena, CA 91106
(626) 600-7042
✔ PECOS30 mi
Nurse Practitioner
NPI 1306615836
1731 E 120TH ST
Los Angeles, CA 90059
(323) 563-4800
✔ PECOS39 mi
Nurse Practitioner
NPI 1508710773
41990 COOK ST STE F2007
Palm Desert, CA 92211
(442) 334-7192
✔ PECOS76 mi
Family Practice
NPI 1003497421
1441 FLORIDA AVE
Modesto, CA 95350
(209) 573-6147
✔ PECOS310 mi

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 Health Service Alliance's NPI number?

The NPI number for Health Service Alliance is 1336858943. It was assigned to this organization in the NPPES registry on November 22, 2022. The provider is doing business as Alta Loma Community Health Center.

Where is Health Service Alliance located?

Health Service Alliance is located at 9089 Base Line Rd Ste 200, Rancho Cucamonga, CA 91730. The listed phone number is (909) 980-3567.

What is Health Service Alliance's specialty?

The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.

Is Health Service Alliance enrolled in Medicare?

Yes. Health Service Alliance is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Health Service Alliance?

According to the CMS Revalidation Reassignment List (October 2026 release), 14 clinicians in 6 Medicare specialties reassign their Medicare billing to Health Service Alliance. A 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 the clinician's services. The largest specialties are Nurse Practitioner (6), Family Practice (3) and Internal Medicine (2). Of these, 1 practice at this address and 6 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Health Service Alliance was last updated on November 22, 2022. 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.