Gregory Wai, D.O.
Physical Medicine & Rehabilitation Physician · French Camp, CA
Gregory Wai, D.O. is a physical medicine & rehabilitation physician with a practice address in French Camp, California, and NPI 1467943902, issued on May 21, 2018. Check the license (California 20A17640, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gregory Wai
- Credential
- D.O.
- Primary taxonomy
- Physical Medicine & Rehabilitation Physician 208100000X
- License number
- 20A17640 CA
Self-reported in NPPES; status is on the state search - Practice location
- 500 W Hospital RD, French Camp, CA 95231
- Phone
- (209) 468-6937
- Enumerated
- May 21, 2018
- Record last updated
- Dec 12, 2024
- Fax
- (209) 468-7042
- Medicare enrollment
- Enrolled (PECOS I20220912003470); accepts Medicare assignment
- Medical or professional school
- Touro Un College Of Osteopathic Medicine, Vallejo, 2018
- Entity
- Type 1 · individual
8 nearest physical medicine & rehabilitation physician records → All 1,549 in California → Look up another NPI →
Also registered at 500 W Hospital RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Massoud Abdali, M.D.Student in an Organized Health Care Education/Training Program1861707325
- Nader Abedini, MDStudent in an Organized Health Care Education/Training Program1861334484
- Marium Abid, MDStudent in an Organized Health Care Education/Training Program1831036375
- Jewel AbrahamAddiction (Substance Use Disorder) Counselor1205050689
- Marc Acosta, RNEmergency Registered Nurse1841188836
Verify Gregory Wai in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A17640Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
21% fewer Medicare Part D claims than the average physical medicine & rehabilitation physician in 2024
571 Medicare Part D claims for 140 beneficiaries, against an average of 727 among the 7,448 providers of this specialty who prescribed in Part D. 41 claims were for opioids.
Most prescribed
- Atorvastatin Calcium35 claims
- Amlodipine Besylate27 claims
- Pantoprazole Sodium20 claims
- Gabapentin19 claims
- Losartan Potassium19 claims
- Oxycodone Hcl19 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): 97.3 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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Rehabilitation Associates PtrLong Beach, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory Wai among 1,549 physical medicine & rehabilitation physician records in California
Gregory Wai, D.O. 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 2018, is newer than 70% of them.
- NPI issued2018 · 70% of these records are older, 26% newer
- In a Medicare fileYes · 59% of these records are
- In the CMS Doctors and Clinicians fileYes · 51% of these records are
- Graduated2018 · median 2008 among the 786 with a school on file
- Record last updated2024 · 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 French Camp → Physical Medicine & Rehabilitation Physician nationwide →
The 8 physical medicine & rehabilitation physician records with the nearest ZIP codes
- Jared FongFrench Camp, CA 952311104316546
- Ashley Bedi, DOLodi, CA 952401770076994
- Rabeep Grewal, M.D.Lodi, CA 952401174886881
- Ruel Amador, RPTLodi, CA 952421609358449
- Ramnik Clair, M.DLodi, CA 952421285723502
- Jordan Raya, D.P.TLodi, CA 952421780002832
- Madelaine Aquino, M.D.Stockton, CA 952191841379856
- Maria Christie Fernando, MDStockton, CA 952191801095039
Common questions
What is Gregory Wai, D.O.'s NPI number?
Gregory Wai, D.O.'s National Provider Identifier (NPI) is 1467943902, issued on May 21, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Wai, D.O. located?
The NPPES record lists a practice address at 500 W Hospital RD, French Camp, CA, 95231. Phone: (209) 468-6937. Providers update this record themselves, so call before visiting.
How can I verify Gregory Wai, D.O.'s license?
NPPES lists California license number 20A17640, 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 Gregory Wai, D.O. prescribe under Medicare Part D?
In 2024, Gregory Wai, D.O. had 571 Medicare Part D claims for 140 beneficiaries; the average among physical medicine & rehabilitation physician prescribers was 727. Part D covers Medicare prescriptions only.
What is Gregory Wai, D.O.'s MIPS final score?
The 2023 MIPS final score is 97.3 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.