John Wong, MD
Internal Medicine Physician · Torrance, CA
John Wong, MD is an internal medicine physician with a practice address in Torrance, California, and NPI 1659336402, issued on Apr 17, 2006. Check the license (California A51406, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Wong
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A51406 CA
Self-reported in NPPES; status is on the state search - Practice location
- 19601 Mariner Ave, Torrance, CA 90503
- Phone
- (310) 214-0811
- Enumerated
- Apr 17, 2006
- Record last updated
- Dec 1, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20040507001341); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 19601 Mariner Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jennifer Clark, RN, NP (MSN)Adult Health Nurse Practitioner1669626669
- Mary Gaekle, RD, CDEMetabolic Nutrition Registered Dietitian1447433545
- Janet Galli, CHESCommunity Health Worker1033392949
- Jessica Harris, R.N.Diabetes Educator Registered Nurse1225211311
- Nancy Ingram, RD, CDEMetabolic Nutrition Registered Dietitian1851574784
- Cherie Maier, MPH, CHESCommunity Health Worker1073796165
Verify John Wong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A51406Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% more Medicare Part D claims than the average internal medicine physician in 2024
4,325 Medicare Part D claims for 290 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 288 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen161 claims
- Atorvastatin Calcium135 claims
- Humulin R127 claims
- Trazodone Hcl118 claims
- Donepezil Hcl109 claims
- Escitalopram Oxalate104 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.
Industry payments in 2024: $30.59
1 payment: food and beverage; the largest payer was Dendreon Pharmaceuticals LLC. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- Southern California Permanente Medical GroupFontana, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Wong among 17,696 internal medicine physician records in California
John Wong, MD 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
- Graduated1991 · median 2004 among the 11,065 with a school on file
- Record last updated2021 · 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).
231 internal medicine physician records list a practice address in Torrance
They are 231 of the 8,901 NPPES records with a practice address in Torrance, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Torrance → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Bahman Bandari, MDTorrance, CA 905031083615298
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- Saroj Bharatiya, M.D.Torrance, CA 905031396727319
- Princess Gladys Bordador, M.D.Torrance, CA 905031952366304
- Michael Borovay, M.D.Torrance, CA 905031174575476
- Carl Feld, MDTorrance, CA 905031205837697
- Gulzar Fidai, MDTorrance, CA 905031851398218
- Kalpana Hool, M.D.Torrance, CA 905031629043799
Common questions
What is John Wong, MD's NPI number?
John Wong, MD's National Provider Identifier (NPI) is 1659336402, issued on Apr 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Wong, MD located?
The NPPES record lists a practice address at 19601 Mariner Ave, Torrance, CA, 90503. Phone: (310) 214-0811. Providers update this record themselves, so call before visiting.
How can I verify John Wong, MD's license?
NPPES lists California license number A51406, 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 John Wong, MD prescribe under Medicare Part D?
In 2024, John Wong, MD had 4,325 Medicare Part D claims for 290 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.
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.