NPPES file of Aug 9, 2026

William Wang, M.D.

Orthopaedic Foot and Ankle Surgery Physician · Mission Viejo, CA

William Wang, M.D. is an orthopaedic foot and ankle surgery physician with a practice address in Mission Viejo, California, and NPI 1730317603, issued on Jun 30, 2009. Check the license (California A130943, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1730317603
Name
William Wang
Credential
M.D.
Primary taxonomy
Orthopaedic Foot and Ankle Surgery Physician 207XX0004X
License number
A130943 CA
Self-reported in NPPES; status is on the state search
Practice location
26730 Crown Valley Pkwy Ste 200, Mission Viejo, CA 92691
Phone
(949) 364-2154
Enumerated
Jun 30, 2009
Record last updated
Feb 17, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(949) 364-2110
Medicare enrollment
Enrolled (PECOS I20141223000497); accepts Medicare assignment
Medical or professional school
University Of Pittsburgh School Of Medicine, 2009
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 26730 Crown Valley Pkwy Ste 200

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Michael Cummings, MDNeurology Physician1538151493
  2. Michael J Fitzpatrick, MDSports Medicine (Orthopaedic Surgery) Physician1952481004
  3. Roger Williams, PTPhysical Therapist1861137606

Verify William Wang in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A130943
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

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50% fewer Medicare Part D claims than the average orthopaedic foot and ankle surgery physician in 2024

113 Medicare Part D claims for 72 beneficiaries, against an average of 225 among the 648 providers of this specialty who prescribed in Part D. 43 claims were for opioids.

  1. William Wang113
  2. Specialty average225

Most prescribed

  1. Hydrocodone-Acetaminophen22 claims
  2. Meloxicam20 claims
  3. Cefadroxil14 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

The practice group's MIPS final score for 2023 (Medicare payment program): 52.6 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score38.5
  2. Costout of 100 · 30%54.8
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $437.66

7 payments; by number, the most common kind was food and beverage; the largest payer was Stryker Corporation. The 643 providers of this specialty with any payment received $23,314.63 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. William Wang$438
  2. Specialty average$23,315

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Orthopaedic Specialty Institute Medical Group OF Orange CountyMission Viejo, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

William Wang among 71 orthopaedic foot and ankle surgery physician records in California

William Wang, M.D. is one of 71 orthopaedic foot and ankle surgery physician records with a practice address in California. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 51% of them.

  • NPI issued2009 · 51% of these records are older, 42% newer
  • In a Medicare fileYes · 85% of these records are
  • In the CMS Doctors and Clinicians fileYes · 72% of these records are
  • Graduated2009 · median 2008 among the 51 with a school on file
  • Record last updated2020 · 39% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207XX0004X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Orthopaedic Foot and Ankle Surgery Physician providers in California

There are 71 orthopaedic foot and ankle surgery physician records in California.

The 8 orthopaedic foot and ankle surgery physician records with the nearest ZIP codes

  1. Domenic Signorelli, D.P.M.Santa Ana, CA 927011053488676
  2. Andrew Gerken, M.D.Newport Beach, CA 926601538105739
  3. Alexander Tischler, M.D.Newport Beach, CA 926601760426837
  4. Arash Aminian, M.D.Laguna Woods, CA 926371154363554
  5. Brandon Haghverdian, M.D.Orange, CA 928681851827661
  6. Justin Haghverdian, MDOrange, CA 928681073001962
  7. Andrew Hsu, MDOrange, CA 928681497983761
  8. Steve Kang, MDOrange, CA 928681538393889

Common questions

What is William Wang, M.D.'s NPI number?

William Wang, M.D.'s National Provider Identifier (NPI) is 1730317603, issued on Jun 30, 2009. An NPI identifies a provider in billing; it is not a license.

Where is William Wang, M.D. located?

The NPPES record lists a practice address at 26730 Crown Valley Pkwy Ste 200, Mission Viejo, CA, 92691. Phone: (949) 364-2154. Providers update this record themselves, so call before visiting.

How can I verify William Wang, M.D.'s license?

NPPES lists California license number A130943, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does William Wang, M.D. prescribe under Medicare Part D?

In 2024, William Wang, M.D. had 113 Medicare Part D claims for 72 beneficiaries; the average among orthopaedic foot and ankle surgery physician prescribers was 225. Part D covers Medicare prescriptions only.

What is William Wang, M.D.'s MIPS final score?

The 2023 MIPS final score is 52.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.