Ronald S. Kwok, M.D.
Internal Medicine Physician · El Cajon, CA
Ronald S. Kwok, M.D. is an internal medicine physician with a practice address in El Cajon, California, and NPI 1417062894, issued on Aug 19, 2006. Check the license (California A62690, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ronald S. Kwok
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A62690 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1240 Broadway, El Cajon, CA 92021
- Phone
- (858) 499-2269
- Enumerated
- Aug 19, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 00A626900 CA
- Medicare enrollment
- Enrolled (PECOS I20100810000870); 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 1240 Broadway
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lakai Banks-Dean, MDAddiction Medicine (Family Medicine) Physician1346746930
- Tyler GroggPsychiatric/Mental Health Registered Nurse1740090927
- Prachi Karnik, M.D.Internal Medicine Physician1134131725
- Lauren LynchPsychiatric/Mental Health Nurse Practitioner1982590287
- Ataa Maty, NPPsychiatric/Mental Health Nurse Practitioner1598446601
- Ashley SmithPhysician Assistant1194408872
Verify Ronald S. Kwok in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A62690Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% more Medicare Part D claims than the average internal medicine physician in 2024
6,268 Medicare Part D claims for 817 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. 65 claims were for opioids.
Most prescribed
- Atorvastatin Calcium782 claims
- Losartan Potassium272 claims
- Levothyroxine Sodium262 claims
- Lisinopril255 claims
- Amlodipine Besylate217 claims
- Rosuvastatin Calcium185 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 IncEl Cajon, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ronald S. Kwok among 17,696 internal medicine physician records in California
Ronald S. Kwok, M.D. 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
- Graduated1995 · median 2004 among the 11,065 with a school on file
- Record last updated2007 · 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).
26 internal medicine physician records list a practice address in El Cajon
They are 26 of the 3,277 NPPES records with a practice address in El Cajon, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in El Cajon → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jimi Benson, M.D.El Cajon, CA 920211477751667
- Prachi Karnik, M.D.El Cajon, CA 920211134131725
- Yunmi KimEl Cajon, CA 920211467166942
- Robin Spiering, MDEl Cajon, CA 920211467458729
- Amethyst Aguero, DOEl Cajon, CA 920201568021913
- Ahmed Al Shawwaf, M.DEl Cajon, CA 920201619321098
- Mohammed Alshammary, MDEl Cajon, CA 920201194217539
- Samuel AniEl Cajon, CA 920201215514823
Common questions
What is Ronald S. Kwok, M.D.'s NPI number?
Ronald S. Kwok, M.D.'s National Provider Identifier (NPI) is 1417062894, issued on Aug 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ronald S. Kwok, M.D. located?
The NPPES record lists a practice address at 1240 Broadway, El Cajon, CA, 92021. Phone: (858) 499-2269. Providers update this record themselves, so call before visiting.
How can I verify Ronald S. Kwok, M.D.'s license?
NPPES lists California license number A62690, 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 Ronald S. Kwok, M.D. prescribe under Medicare Part D?
In 2024, Ronald S. Kwok, M.D. had 6,268 Medicare Part D claims for 817 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Ronald S. Kwok, M.D.'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.