NPPES file of Aug 9, 2026

Wanda Shok Yin Chang, M.D.

Physical Medicine & Rehabilitation Physician · Irvine, CA

Wanda Shok Yin Chang, M.D. is a physical medicine & rehabilitation physician with a practice address in Irvine, California, and NPI 1336396373, issued on Aug 21, 2008. Check the license (California A105274, 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1336396373
Name
Wanda Shok Yin Chang
Credential
M.D.
Primary taxonomy
Physical Medicine & Rehabilitation Physician 208100000X
License number
A105274 CA
Self-reported in NPPES; status is on the state search
Practice location
6670 Alton Pkwy, Irvine, CA 92618
Phone
(949) 932-5398
Enumerated
Aug 21, 2008
Record last updated
Dec 2, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20110926000379); accepts Medicare assignment
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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8 nearest physical medicine & rehabilitation physician records → All 1,549 in California → Look up another NPI →

Also registered at 6670 Alton Pkwy

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

  1. Brett AkahijiPhysical Therapist1790443356
  2. Bey-Ying Asada, PTPhysical Therapist1407063027
  3. Danny Botros, MDPain Medicine (Anesthesiology) Physician1588810816
  4. Katherine Ceman, RNRegistered Nurse1962377804
  5. Stacy ChangPsychiatric/Mental Health Nurse Practitioner1821978453
  6. Joanne Choi, PHARM.D.Pharmacist1497847719

Verify Wanda Shok Yin Chang in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A105274    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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44% fewer Medicare Part D claims than the average physical medicine & rehabilitation physician in 2024

404 Medicare Part D claims for 153 beneficiaries, against an average of 727 among the 7,448 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 170 claims were for opioids.

  1. Wanda Chang404
  2. Specialty average727

Most prescribed

  1. Gabapentin88 claims
  2. Hydrocodone-Acetaminophen74 claims
  3. Pregabalin62 claims
  4. Oxycodone-Acetaminophen42 claims
  5. Tramadol Hcl21 claims
  6. Prednisone18 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.

Bills Medicare through one group practice

  1. Southern California Permanente Medical GroupAnaheim, CA

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

Wanda Shok Yin Chang among 1,549 physical medicine & rehabilitation physician records in California

Wanda Shok Yin Chang, M.D. is one of 1,549 physical medicine & rehabilitation physician records with a practice address in California. 59% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 41% of them.

  • NPI issued2008 · 41% of these records are older, 55% newer
  • In a Medicare fileYes · 59% of these records are
  • In the CMS Doctors and Clinicians fileYes · 51% of these records are
  • Graduated2007 · median 2008 among the 786 with a school on file
  • Record last updated2021 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208100000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Physical Medicine & Rehabilitation Physician providers in California

There are 1,549 physical medicine & rehabilitation physician records in California.

All 1,549 in California → Every provider in Irvine → Physical Medicine & Rehabilitation Physician nationwide →

The 8 physical medicine & rehabilitation physician records with the nearest ZIP codes

  1. Jessica ChengIrvine, CA 926181336672302
  2. Michael Chiu, PTIrvine, CA 926181851818165
  3. Jerry Chuang, M.D.Irvine, CA 926181225231491
  4. Esther Cohen, MDIrvine, CA 926181497924294
  5. Karim Fahmy, DOIrvine, CA 926181851852644
  6. Christina Lee, MPTIrvine, CA 926181649522442
  7. Kyle Seko, D.O.Irvine, CA 926181457715583
  8. Parish Vaidya, MDIrvine, CA 926181205033594

Common questions

What is Wanda Shok Yin Chang, M.D.'s NPI number?

Wanda Shok Yin Chang, M.D.'s National Provider Identifier (NPI) is 1336396373, issued on Aug 21, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Wanda Shok Yin Chang, M.D. located?

The NPPES record lists a practice address at 6670 Alton Pkwy, Irvine, CA, 92618. Phone: (949) 932-5398. Providers update this record themselves, so call before visiting.

How can I verify Wanda Shok Yin Chang, M.D.'s license?

NPPES lists California license number A105274, 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 Wanda Shok Yin Chang, M.D. prescribe under Medicare Part D?

In 2024, Wanda Shok Yin Chang, M.D. had 404 Medicare Part D claims for 153 beneficiaries; the average among physical medicine & rehabilitation physician prescribers was 727. Part D covers Medicare prescriptions only.

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.