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

Dr. Michael Neinast, DO

Individual provider Internal Medicine Physician · NPI 1770105769

Dr. Michael Neinast, DO is an Internal Medicine Physician in Orange, California. Works from 4 locations. Licensed in California and Illinois.

Licensed in
CA, IL
In the registry since
2020
Specialties on file
3
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

101 The City Dr S
Orange, CA 92868-3201
Phone: (714) 456-8888
Show map & directions

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

Additional practice locations (3)

  • 1300 Franklin Ave Ste 380, Normal, IL 61761-4266 — (309) 268-3598
  • 751 N Rutledge St Ste 1100, Springfield, IL 62702-4968 — (217) 545-8000
  • 701 N 1st St, Springfield, IL 62702-3757 — (217) 545-8000

Specialties & licences

Nephrology Physician (primary) Taxonomy 207RN0300X · Licence 22603 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 125075898 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 036.163604 (IL)

Record details

NPI number1770105769
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMay 12, 2020
Last updated in NPPESJuly 22, 2026
Certification dateJuly 22, 2026
Mailing address101 The City Dr S, Orange, CA 92868-3201

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