Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Mr. Michael Steven Santillan, PA-C, CAQ-PSYCH

Individual provider Psychiatric/Mental Health Clinical Nurse Specialist · NPI 1861139628

Mr. Michael Steven Santillan, PA-C, CAQ-PSYCH is a Physician Assistant in Mission Viejo, California. Qualified in 2022, 4 years ago. Practices with Pacific Neuropsychiatric Specialists Inc, a 71-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
4
Licensed in
CA
In the registry since
2022
Specialties on file
2
What do these letters mean?
PA-C — Physician Assistant, Certified
A physician assistant who holds current national certification.

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Practice location Address checks out

26024 Acero
Mission Viejo, CA 92691-2768
Phone: (714) 545-5550
Fax: (949) 609-0374
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Medical Physician Assistant (primary) Taxonomy 363AM0700X · Licence PA61412 (CA)
Psychiatric/Mental Health Clinical Nurse Specialist Taxonomy 364SP0808X · Licence PA61412 (CA)

Record details

NPI number1861139628
Entity typeIndividual (Type 1)
GenderMale
Credentials PA-C , CAQ-PSYCH
Sole proprietorNo
NPI enumeratedMay 13, 2022
Last updated in NPPESSeptember 30, 2025
Certification dateSeptember 30, 2025

Medicare enrollment

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

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2022 (4 years in practice)
Group practice Pacific Neuropsychiatric Specialists Inc — 71 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

Other providers in Mission Viejo