Deborah Chon, M.D.
Endocrinology, Diabetes & Metabolism Physician · Torrance, CA
Deborah Chon, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Torrance, California, and NPI 1003173949, issued on Apr 17, 2012. Check the license (California 12189893, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Deborah Chon
- Credential
- M.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- 12189893 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3445 Pacific Coast Hwy Ste 100, Torrance, CA 90505
- Phone
- (310) 542-6333
- Enumerated
- Apr 17, 2012
- Record last updated
- Nov 30, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20170919001157); accepts Medicare assignment
- Medical or professional school
- Rush Medical College Of Rush University, 2012
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 1,131 in California → Look up another NPI →
Also registered at 3445 Pacific Coast Hwy Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Aarthi Arasu, MDEndocrinology, Diabetes & Metabolism Physician1326218249
- Vivek Bose, MDEndocrinology, Diabetes & Metabolism Physician1154858215
- Dianne Cheung, M.D.Endocrinology, Diabetes & Metabolism Physician1417197062
- Rebecca Gerl, RDRegistered Dietitian1619495967
- Jennifer Han, M.D.Endocrinology, Diabetes & Metabolism Physician1982837456
- Michelle Hwang, M.D.Nephrology Physician1134503337
Verify Deborah Chon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 12189893Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
41% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
1,562 Medicare Part D claims for 325 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 40% of claims.
Most prescribed
- Levothyroxine Sodium215 claims
- Ozempic129 claims
- Methimazole112 claims
- Insulin Glargine-Yfgn95 claims
- Glipizide91 claims
- Nano 2nd Gen Pen Needle63 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
- Southern California Permanente Medical GroupLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Deborah Chon among 1,131 endocrinology, diabetes & metabolism physician records in California
Deborah Chon, M.D. is one of 1,131 endocrinology, diabetes & metabolism physician records with a practice address in California. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 74% of them.
- NPI issued2012 · 74% of these records are older, 23% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2012 · median 2003 among the 779 with a school on file
- Record last updated2021 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in California
There are 1,131 endocrinology, diabetes & metabolism physician records in California.
All 1,131 in California → Every provider in Torrance → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Nidhi Agarwal, MDTorrance, CA 905051518387125
- Aarthi Arasu, MDTorrance, CA 905051326218249
- Soubhi Bahna, M.D.Torrance, CA 905051497069751
- Dianne Cheung, M.D.Torrance, CA 905051417197062
- Jennifer Han, M.D.Torrance, CA 905051982837456
- Kent Holtorf, M.D.Torrance, CA 905051427206135
- Robert Li, M.D./PH.D.Torrance, CA 905051902241607
- Wasima Masoodi, MDTorrance, CA 905051275563017
Common questions
What is Deborah Chon, M.D.'s NPI number?
Deborah Chon, M.D.'s National Provider Identifier (NPI) is 1003173949, issued on Apr 17, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Deborah Chon, M.D. located?
The NPPES record lists a practice address at 3445 Pacific Coast Hwy Ste 100, Torrance, CA, 90505. Phone: (310) 542-6333. Providers update this record themselves, so call before visiting.
How can I verify Deborah Chon, M.D.'s license?
NPPES lists California license number 12189893, 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 Deborah Chon, M.D. prescribe under Medicare Part D?
In 2024, Deborah Chon, M.D. had 1,562 Medicare Part D claims for 325 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.