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

William Craig Paley, DO

Individual provider Family Medicine Physician · NPI 1124105754

William Craig Paley, DO is a Family Practice in Ontario, California. Graduated from Midwestern University, Chicago College of Osteopathic Med in 1981, 45 years ago. Practices with Unicare Community Health Center, Inc, a 65-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
45
Trained at
Midwestern University, Chicago College of Osteopathic Med
Licensed in
IL
In the registry since
2006
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

437 N Euclid Ave
Ontario, CA 91762-3456
Phone: (909) 988-2555
Fax: (909) 988-4447
Show map & directions

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

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 20A4932 (IL)

Record details

NPI number1124105754
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedNovember 1, 2006
Last updated in NPPESFebruary 27, 2024
Certification dateDecember 30, 2021
Mailing address437 N Euclid Ave, Ontario, CA 91762-3456

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolMIDWESTERN UNIVERSITY, CHICAGO COLLEGE OF OSTEOPATHIC MED
Graduated 1981 (45 years in practice)
Group practice Unicare Community Health Center, Inc. — 65 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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