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MICHAEL MARSHALL APRN, PMHNP
NPI 1245563543
Nurse Practitioner - Psychiatric/Mental Health in Ontario, CA

Active since September 17, 2009PECOS Enrolled
3200 E GUASTI RD, ONTARIO, CA 91761(909) 755-6610(909) 385-3335 Get Directions Write a Review

NPPES record last updated: February 24, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 30, 2024, Dec 5, 2023, Jun 20, 2018 (3 updates tracked since 2018).

About Michael Marshall Aprn, Pmhnp NPPES

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

MICHAEL MARSHALL APRN, PMHNP (NPI 1245563543) is an individual psychiatric/mental health provider in Ontario, California, licensed in California (95028122) and active in the NPI registry since September 2009. He is enrolled in Medicare PECOS and maintains a secondary practice location in Fontana.

NPPES Registry Identity

NPI1245563543
Entity TypeIndividualMale
Primary Taxonomy363LP0808X
Provider Legal NameMICHAEL MARSHALLCredential: APRN, PMHNP
Location Address3200 E GUASTI RDOntario, CA 91761-8660
Mailing Address3200 E Guasti RdOntario, CA 91761-8660 · (909) 755-6610 · Fax (909) 385-3335
Phone(909) 755-6610
Fax(909) 385-3335
Sole ProprietorNo
Enumeration DateSeptember 17, 2009
Last NPPES UpdateFebruary 24, 20263 updates tracked since enumeration
NPPES CertifiedFebruary 24, 2026
✔ NPI 1245563543 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
License✔ Licensed in CA · 95028122
Also ListedRegistered NurseTaxonomy 163W00000X · License 679231 (CA)
3200 E GUASTI RD, Ontario, CA 91761
Open in Google Maps ↗

Secondary Practice Location 1

Location 114677 Merrill AveFontana, CA 92335-4219 · Phone (951) 643-2340

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Michael Marshall Aprn, Pmhnp 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91761 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
$91.88 typical visit price
range $59.60 – $179.42
Typical copayment $22.97 (range $14.90 – $44.85)
Most-billed visit code 99203
Established Patient
$104.64 typical visit price
range $19.37 – $146.42
Typical copayment $26.16 (range $4.84 – $36.60)
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 14

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

JAIR WALKER
Behavior Technician
3200 E GUASTI RD
ONTARIO, CA 91761
San Bernardino County (909) 240-2565
CHESTER T GREGSON
Marriage & Family Therapist
3200 E GUASTI RD
ONTARIO, CA 91761
San Bernardino County (619) 639-9730
4 U MEDICAL TRANSIT
Non-emergency Medical Transport (VAN)
3200 E GUASTI RD, SUITE 100
ONTARIO, CA 91761
San Bernardino County (844) 243-9988
MARSHALL ADVANCED NURSING PRACTICE PC
Nurse Practitioner (Psychiatric/Mental Health)
3200 E GUASTI RD
ONTARIO, CA 91761
San Bernardino County (909) 755-6610
RAVEN NALIKA ROSE LMFT
Marriage & Family Therapist
3200 E GUASTI RD
ONTARIO, CA 91761
San Bernardino County (909) 295-5805
KRISTOFER R ANDERSON MFT
Marriage & Family Therapist
3200 E GUASTI RD, SUITE 100-42
ONTARIO, CA 91761
San Bernardino County (909) 262-1768
JAYCEE L BARHAM
Behavior Technician
3200 E GUASTI RD
ONTARIO, CA 91761
San Bernardino County (909) 240-2565
MARIA VARGAS LICENSED CLINICAL SOCIAL WORKER
Counselor (Mental Health)
3200 E GUASTI RD
ONTARIO, CA 91761
San Bernardino County (909) 963-6730

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 Michael Marshall's NPI number?

The NPI number for Michael Marshall is 1245563543. It was assigned to this individual provider in the NPPES registry on September 17, 2009.

Where is Michael Marshall located?

Michael Marshall practices at 3200 E Guasti Rd, Ontario, CA 91761. The listed phone number is (909) 755-6610.

What is Michael Marshall's specialty?

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

Is Michael Marshall enrolled in Medicare?

Yes. Michael Marshall is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Michael Marshall was last updated on February 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months 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.