Thynn T. Wai
Internal Medicine Physician · La Mesa, CA
Thynn T. Wai is an internal medicine physician with a practice address in La Mesa, California, and NPI 1700940186, issued on Dec 20, 2006. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Thynn T. Wai
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 25MA08144700 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 5525 Grossmont Center Dr, La Mesa, CA 91942
- Phone
- (619) 644-6812
- Enumerated
- Dec 20, 2006
- Record last updated
- Jan 15, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20131018001039); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 5525 Grossmont Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ashkan Abedini, MDFamily Medicine Physician1013546373
- Cynthia Adams, PA-CMedical Physician Assistant1447564141
- Alicia Afrah-Boateng, PA-CPhysician Assistant1174073886
- Sonal Agrawal, M.D.Pediatrics Physician1881702348
- Mary Alexander, M.D.Internal Medicine Physician1538177845
- James Amberg, MDFamily Medicine Physician1265497093
Verify Thynn T. Wai in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% more Medicare Part D claims than the average internal medicine physician in 2024
6,190 Medicare Part D claims for 559 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 274 claims were for opioids.
Most prescribed
- Atorvastatin Calcium437 claims
- Levothyroxine Sodium285 claims
- Amlodipine Besylate276 claims
- Hydrocodone-Acetaminophen178 claims
- Losartan Potassium170 claims
- Lisinopril146 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): 73.6 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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Sharp Rees-Stealy Medical Group IncSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thynn T. Wai among 17,696 internal medicine physician records in California
Thynn T. Wai is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1999 · median 2004 among the 11,065 with a school on file
- Record last updated2014 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
61 internal medicine physician records list a practice address in La Mesa
They are 61 of the 2,168 NPPES records with a practice address in La Mesa, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in La Mesa → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Ali Alamar, M.D.La Mesa, CA 919421972606374
- Mary Alexander, M.D.La Mesa, CA 919421538177845
- Felicia Briones-Colman, M.D.La Mesa, CA 919421962517367
- Robert Foster, MDLa Mesa, CA 919421871593756
- Eva Leonard, M.D.La Mesa, CA 919421386602746
- Douglas Levey, M.D.La Mesa, CA 919421932210523
- Ellyn Levine, M.D.La Mesa, CA 919421760470546
- Teh Liang, M.D.La Mesa, CA 919421255340535
Common questions
What is Thynn T. Wai's NPI number?
Thynn T. Wai's National Provider Identifier (NPI) is 1700940186, issued on Dec 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thynn T. Wai located?
The NPPES record lists a practice address at 5525 Grossmont Center Dr, La Mesa, CA, 91942. Phone: (619) 644-6812. Providers update this record themselves, so call before visiting.
How can I verify Thynn T. Wai's license?
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 Thynn T. Wai prescribe under Medicare Part D?
In 2024, Thynn T. Wai had 6,190 Medicare Part D claims for 559 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Thynn T. Wai's MIPS final score?
The 2023 MIPS final score is 73.6 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.