Jajin Thomas Chon, M.D.
Endocrinology, Diabetes & Metabolism Physician · Morristown, NJ
Jajin Thomas Chon, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Morristown, New Jersey, and NPI 1346320553, issued on Oct 16, 2006. Check the license (New Jersey 25MA07379600, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Jajin Thomas Chon
- Credential
- M.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- 25MA07379600 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 435 South St, Morristown, NJ 07960
- Phone
- (973) 971-6480
- Enumerated
- Oct 16, 2006
- Record last updated
- Dec 5, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20031118000960); accepts Medicare assignment
- Medical or professional school
- State University Of New York At Stony Brook, School Of Medicine, 1997
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 417 in New Jersey → Look up another NPI →
Also registered at 435 South St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Darius Adams, M.D.Clinical Genetics (M.D.) Physician1972506749
- Elsie AltemaAdult Health Nurse Practitioner1073941274
- Nalini Asokan, MDInternal Medicine Physician1235100389
- Jessalyn Brower, MSGenetic Counselor (M.S.)1063038008
- Maria Carter, RDNRegistered Dietitian1063063808
- Patrick Culligan, MDObstetrics & Gynecology Physician1497727721
Verify Jajin Thomas Chon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license 25MA07379600Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
22% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
2,054 Medicare Part D claims for 274 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 42% of claims.
Most prescribed
- Levothyroxine Sodium238 claims
- Metformin Hcl186 claims
- Jardiance151 claims
- Januvia112 claims
- Atorvastatin Calcium91 claims
- Ozempic71 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: $922.33
44 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 5,661 providers of this specialty with any payment received $5,742.15 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
- Medical Associates OF Englewood PCCliffside Park, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jajin Thomas Chon among 417 endocrinology, diabetes & metabolism physician records in New Jersey
Jajin Thomas Chon, M.D. is one of 417 endocrinology, diabetes & metabolism physician records with a practice address in New Jersey. 85% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 61% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated1997 · median 2006 among the 313 with a school on file
- Record last updated2018 · 56% 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 New Jersey 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 New Jersey
There are 417 endocrinology, diabetes & metabolism physician records in New Jersey.
All 417 in New Jersey → Every provider in Morristown → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Rachel Castaneda, M.D.Morristown, NJ 079601619051646
- Heather Greenberg, M.D.Morristown, NJ 079601407121684
- Debra Margulies, M.D.Morristown, NJ 079601134177918
- Robert Melfi, MDMorristown, NJ 079601346213998
- Andrew Parziale, MDMorristown, NJ 079601346638350
- Ronak PatelMorristown, NJ 079601821247354
- Nikoletta ProudanMorristown, NJ 079601437538279
- Leena Shah, M.D.Morristown, NJ 079601194258343
Common questions
What is Jajin Thomas Chon, M.D.'s NPI number?
Jajin Thomas Chon, M.D.'s National Provider Identifier (NPI) is 1346320553, issued on Oct 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jajin Thomas Chon, M.D. located?
The NPPES record lists a practice address at 435 South St, Morristown, NJ, 07960. Phone: (973) 971-6480. Providers update this record themselves, so call before visiting.
How can I verify Jajin Thomas Chon, M.D.'s license?
NPPES lists New Jersey license number 25MA07379600, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jajin Thomas Chon, M.D. prescribe under Medicare Part D?
In 2024, Jajin Thomas Chon, M.D. had 2,054 Medicare Part D claims for 274 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.