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

Dr. Ryan Michael Greytak, MD

Individual provider Geriatric Psychiatry Physician · NPI 1750604617

Dr. Ryan Michael Greytak, MD is a Psychiatry in Fresno, California. Graduated from University of Pittsburgh School of Medicine in 2009, 17 years ago. Practices as a sole proprietor, works from 6 locations, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
17
Trained at
University of Pittsburgh School of Medicine
Licensed in
CA
In the registry since
2010
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

4855 E Cesar Chavez Blvd
Fresno, CA 93727-3811
Phone: (559) 255-8395
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (5)

  • 4411 E Kings Canyon Rd, Fresno, CA 93702-3604 — (559) 512-8650
  • 6121 N Thesta St Ste 304, Fresno, CA 93710-5294 — (559) 538-1735
  • 4879 E Kings Canyon Rd, Fresno, CA 93727-3811 — (559) 255-8395
  • 4871 E Cesar Chavez Blvd, Fresno, CA 93727-3811 — (559) 255-8395
  • 265 S Anita Dr Ste 102-104, Orange, CA 92868-3355 — (714) 410-3500

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence A126390 (CA)
Geriatric Psychiatry Physician Taxonomy 2084P0805X · Licence A126390 (CA)

Record details

NPI number1750604617
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 8, 2010
Last updated in NPPESApril 2, 2025
Certification dateMarch 20, 2025
Mailing address4855 E Cesar Chavez Blvd, Fresno, CA 93727-3811

Medicare enrollment

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

Medicare specialtyPSYCHIATRY
Medical schoolUNIVERSITY OF PITTSBURGH SCHOOL OF MEDICINE
Graduated 2009 (17 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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