Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Maribel Contreras, PSYD, MFT46194

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1538339627

Dr. Maribel Contreras, PSYD, MFT46194 is a Marriage and Family Therapist in Upland, California. Qualified in 2005, 21 years ago. Practices with Holistic Healthcare Services, a 6-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
21
Licensed in
CA
In the registry since
2008
Specialties on file
2
What do these letters mean?
PSYD — Doctor of Psychology
A doctoral psychologist trained primarily for clinical practice.

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Practice location Address checks out

2335 W Foothill Blvd Ste 5
Upland, CA 91786-3576
Phone: (909) 778-3796
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 820 N Mountain Ave Ste 215, Upland, CA 91786-4163 — (909) 778-3796

Specialties & licences

Marriage & Family Therapist (primary) Taxonomy 106H00000X · Licence 46194 (CA)
Addiction (Substance Use Disorder) Counselor Taxonomy 101YA0400X

Record details

NPI number1538339627
Entity typeIndividual (Type 1)
GenderFemale
Credentials PSYD , MFT46194
Sole proprietorNo
NPI enumeratedMarch 5, 2008
Last updated in NPPESJanuary 16, 2026
Certification dateJanuary 16, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyMARRIAGE AND FAMILY THERAPIST
Medical schoolOTHER
Graduated 2005 (21 years in practice)
Group practice Holistic Healthcare Services — 6 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients61
Services billed 837 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Holistic Healthcare Services

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 6 clinicians in the practice; 4 are shown here.

Other providers in Upland