Jamie Byun, MD
Gastroenterology Physician · Modesto, CA
Jamie Byun, MD is a gastroenterology physician with a practice address in Modesto, California, and NPI 1306341953, issued on Mar 27, 2018. Check the license (California A178102, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jamie Byun
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- A178102 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1401 Spanos CT, Modesto, CA 95355
- Phone
- (209) 550-4788
- Enumerated
- Mar 27, 2018
- Record last updated
- Oct 29, 2024
- Medicare enrollment
- Enrolled (PECOS I20220711002757); accepts Medicare assignment
- Medical or professional school
- University Of Maryland School Of Medicine, 2018
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 1401 Spanos CT
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Michael Budd, M.D.Plastic Surgery Physician1699953893
- John Capua, D.O.Neurological Surgery Physician1811159254
- Alexander Davis, M.D.Orthopaedic Surgery Physician1083669170
Verify Jamie Byun in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A178102Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% fewer Medicare Part D claims than the average gastroenterology physician in 2024
215 Medicare Part D claims for 48 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 55% of claims.
Most prescribed
- Mounjaro51 claims
- Topiramate31 claims
- Ozempic30 claims
- Metformin Hcl Er28 claims
- Wegovy24 claims
- Metformin Hcl22 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: $180.45
10 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 13,350 providers of this specialty with any payment received $5,015.95 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
- Sutter Valley Medical FoundationManteca, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jamie Byun among 2,140 gastroenterology physician records in California
Jamie Byun, MD is one of 2,140 gastroenterology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 94% of them.
- NPI issued2018 · 94% of these records are older, 4% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2018 · median 2002 among the 1,538 with a school on file
- Record last updated2024 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in Modesto → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Safwat Absood, M.D.Modesto, CA 953551932113891
- Pardeep Brar, MD,Modesto, CA 953551538153713
- Vida ChenModesto, CA 953551922480789
- Richard Fisher, MDModesto, CA 953551295785798
- Ambrish Ghumman, M.D.Modesto, CA 953551093019929
- Raman Khehra, MDModesto, CA 953551548425382
- Navim Mobin, MDModesto, CA 953551134625304
- Gaspar Nazareno, M.D.Modesto, CA 953551326096603
Common questions
What is Jamie Byun, MD's NPI number?
Jamie Byun, MD's National Provider Identifier (NPI) is 1306341953, issued on Mar 27, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Jamie Byun, MD located?
The NPPES record lists a practice address at 1401 Spanos CT, Modesto, CA, 95355. Phone: (209) 550-4788. Providers update this record themselves, so call before visiting.
How can I verify Jamie Byun, MD's license?
NPPES lists California license number A178102, 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 Jamie Byun, MD prescribe under Medicare Part D?
In 2024, Jamie Byun, MD had 215 Medicare Part D claims for 48 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.