Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Mr. Michael Jay Ryan, MS

Individual provider Psychologist · NPI 1326454828

Mr. Michael Jay Ryan, MS is a Clinical Psychologist in Vacaville, California. Qualified in 2015, 11 years ago. Practices with Regents of the University of California, a 563-clinician group and accepts Medicare assignment.

Years since qualifying
11
In the registry since
2014
What do these letters mean?
MS — Master of Science
A graduate science degree.

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Practice location Address checks out

1600 California Dr
Vacaville, CA 95696 Not confirmed with CMS for 12 years — call before visiting
Phone: (217) 622-0565
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X

Record details

NPI number1326454828
Entity typeIndividual (Type 1)
GenderMale
Credentials MS
Sole proprietorNo
NPI enumeratedJuly 3, 2014
Last updated in NPPESJuly 3, 2014

Medicare enrollment

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

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 2015 (11 years in practice)
Group practice Regents Of The University Of California — 563 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 patients105
Services billed 843 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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 Regents of the University of California

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 563 clinicians in the practice; 12 are shown here.

Other providers in Vacaville