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Edit this profileAt a glance
- 1310 W Stewart Dr, Suite 508, Orange, CA 92868
About Dr. Mcmaster
William C. McMaster, M.D. is a healthcare provider in Orange, CA specializing in orthopedic surgery. William trained at Clvlnd Clinic Lerner College of Med of Case Wstn RSV University, graduating in 1966. William is also listed as specializing in specialist and orthopaedic surgery. According to Medicare claims data, William cared for 64 Medicare patients across 65 services. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and new patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more. This provider record is associated with NPI 1336175058.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (714) 633-2111
- Email not available
Practice Locations
1310 W STEWART DR SUITE 508
Orange, CA 92868
Conditions Commonly Evaluated or Treated
Within Orthopedic Surgery generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Elbow, hand, and wrist
Foot and ankle
Hip
Shoulder
Sports and soft tissue
Trauma and bone
Foot & Ankle
Spine
Procedures & services
Most searched procedures
Evaluation and nonsurgical
Arthroscopy
Foot & Ankle
Foot and ankle
Hand & Wrist
Hand and upper extremity
Injections & Non-Surgical
Injections & pain relief
Joint replacement
- Partial knee replacement
- Reverse shoulder replacement
- Revision joint replacement
- Shoulder replacement
Knee
Shoulder surgery
Trauma & Fractures
Trauma and fixation
Procedures Most Often Billed to Medicare
65 services · 64 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
24 | Less often than most peers in Orthopedic Surgery |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
23 | Less often than most peers in Orthopedic Surgery |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
18 | Less often than most peers in Orthopedic Surgery |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other orthopedic surgeons at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 15 related providers in 2 groups
Other orthopedic surgeons in Orange 7
Same specialty, same city.
Trained at Clvlnd Clinic Lerner College of Med of Case Wstn RSV University 8
Other providers in the same specialty who trained at the same institution.
Common questions
What is William C. McMaster's specialty?
William C. McMaster is an orthopedic surgeon in Orange, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Orthopedic Surgery”.
NPI registry
Where can I find William C. McMaster?
William C. McMaster is listed at 1310 W Stewart Dr Suite 508, Orange, CA 92868. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact William C. McMaster?
The number on file is (714) 633-2111. Contact the office directly to confirm availability and scheduling.
NPI registry
What is William C. McMaster's NPI number?
William C. McMaster's National Provider Identifier is 1336175058. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is William C. McMaster's education?
William C. McMaster attended Clvlnd Clinic Lerner College of Med of Case Wstn RSV University, graduating in 1966. This comes from the CMS National Downloadable File.
CMS public data
How long has William C. McMaster been practicing?
William C. McMaster has 60 years experience. Calculated from a graduation year of 1966, reported in the CMS National Downloadable File.
CMS public data
What is William C. McMaster known for?
According to Medicare billing data, William C. McMaster the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has William C. McMaster confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by William C. McMaster. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.