Doctor profile · Federal record

Dr. William McMaster, M.D.

Orthopaedic Surgery Physician (CMS: Orthopedic Surgery) · Specialist · Orange, CA

  • NPI 1336175058
  • Accepts Medicare
  • 60 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1310 W Stewart Dr, Suite 508
Orange, CA 928683854
(714) 633-2111
fax (714) 633-5615

Credentials & registration

NPPES · NUCC
NPI registered
June 2006 — 20 yrs on file
Profile last updated
March 3, 2025
Year of graduation
1966 — 60 yrs since
Specialty taxonomy
207X00000X — NUCC code
State license (1)
California #G20323

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1336175058. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
30
Distinct HCPCS
2
Medicare allowed
$2,562
HCPCS Description Services Patients Avg allowed
99213 Established patient office or other outpatient visit, 20-29 minutes 17 15 $71
99214 Established patient office or other outpatient visit, 30-39 minutes 13 11 $105

In context: peer comparison

Among 12 peers in Orange Orthopaedic Surgery Physician, average services per provider: 389. This provider delivers 0.1× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$175
Transactions
1
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
Davol INC. 1 $175.02

By nature of payment

Food and Beverage
$175

Frequently asked questions

Auto-generated from federal data
What is Dr. William McMaster's medical specialty?
Dr. William McMaster practices Orthopaedic Surgery Physician in Orange, CA.
Where does Dr. William McMaster practice?
Dr. William McMaster practices at 1310 W Stewart Dr, Orange, CA 928683854. Office phone: 7146332111.
What is Dr. William McMaster's NPI?
Dr. William McMaster's National Provider Identifier (NPI) is 1336175058, issued by NPPES.
Does Dr. William McMaster accept Medicare assignment?
Yes. Dr. William McMaster accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William McMaster commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.