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

Dr. William C McMaster, MD

Individual provider Specialist · NPI 1336175058

Dr. William C McMaster, MD is an Orthopedic Surgery in Orange, California. Graduated from Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University in 1966, 60 years ago. Practices with Regents of the University of California, a 48-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
60
Trained at
Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University
Licensed in
CA
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1310 W Stewart Dr Ste 508
Orange, CA 92868-3854
Phone: (714) 633-2111
Fax: (714) 633-5615
Show map & directions

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

Specialties & licences

Orthopaedic Surgery Physician (primary) Taxonomy 207X00000X · Licence G20323 (CA)
Specialist Taxonomy 174400000X

Record details

NPI number1336175058
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 24, 2006
Last updated in NPPESMarch 3, 2025
Certification dateMarch 3, 2025
Mailing address1310 W Stewart Dr, Suite 508, Orange, CA 92868-3854

Medicare enrollment

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

Medicare specialtyORTHOPEDIC SURGERY
Medical schoolCLVLND CLINIC LERNER COLLEGE OF MED OF CASE WSTN RSV UNIVERSITY
Graduated 1966 (60 years in practice)
Group practice Regents Of The University Of California — 48 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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