James S. Jung, MD
Orthopaedic Surgery Physician · Fontana, CA
James S. Jung, MD is an orthopaedic surgery physician with a practice address in Fontana, California, and NPI 1720475270, issued on Apr 22, 2015. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- James S. Jung
- Credential
- MD
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License number
- MD471137 PA
Self-reported in NPPES; status is on the state search - Practice location
- 9985 Sierra Ave, Fontana, CA 92335
- Phone
- (909) 427-5000
- Enumerated
- Apr 22, 2015
- Record last updated
- Dec 6, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20211007002044); accepts Medicare assignment
- Medical or professional school
- Un Of California, Irvine, College Of Medicine, 2015
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 2,276 in California → Look up another NPI →
Also registered at 9985 Sierra Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify James S. Jung 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
77% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024
81 Medicare Part D claims for 45 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. 37 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen25 claims
- Ibuprofen18 claims
- Gabapentin15 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: $7,169.11
9 payments; by number, the most common kind was food and beverage; the largest payer was Intuitive Surgical, Inc. The 15,003 providers of this specialty with any payment received $23,022.89 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).
James S. Jung among 2,276 orthopaedic surgery physician records in California
James S. Jung, MD is one of 2,276 orthopaedic surgery physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 84% of them.
- NPI issued2015 · 84% of these records are older, 14% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2015 · median 2003 among the 1,347 with a school on file
- Record last updated2021 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Surgery Physician providers in California
There are 2,276 orthopaedic surgery physician records in California.
All 2,276 in California → Every provider in Fontana → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Brent Berger, M.D.Fontana, CA 923351477717932
- Christine Kwak, MDFontana, CA 923351588655898
- Ho Lee, M.D., PH.D.Fontana, CA 923351528238839
- Richard Biama, MDColton, CA 923241649366345
- Michael Coen, M.D.Highland, CA 923461023047438
- Rebecca Griffith, M.D.Highland, CA 923461972997260
- Owen McIvor, M.D.Highland, CA 923461538108337
- Milton Mudge, MDColton, CA 923241013053727
Common questions
What is James S. Jung, MD's NPI number?
James S. Jung, MD's National Provider Identifier (NPI) is 1720475270, issued on Apr 22, 2015. An NPI identifies a provider in billing; it is not a license.
Where is James S. Jung, MD located?
The NPPES record lists a practice address at 9985 Sierra Ave, Fontana, CA, 92335. Phone: (909) 427-5000. Providers update this record themselves, so call before visiting.
How can I verify James S. Jung, MD'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 James S. Jung, MD prescribe under Medicare Part D?
In 2024, James S. Jung, MD had 81 Medicare Part D claims for 45 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. 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.