Jaehyun Byun, M.D.
Family Medicine Physician · Holyoke, MA
Jaehyun Byun, M.D. is a family medicine physician with a practice address in Holyoke, Massachusetts, and NPI 1881824225, issued on Jul 20, 2009. Check the license (Massachusetts 265898, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Jaehyun Byun
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 265898 MA
A114852 CA
Self-reported in NPPES; status is on the state search - Practice location
- 230 Maple St, Holyoke, MA 01040
- Phone
- (413) 420-2200
- Enumerated
- Jul 20, 2009
- Record last updated
- Aug 17, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20160908001654); accepts Medicare assignment
- Medical or professional school
- Perelman School Of Med At The University Of Pennsylvania, 2009
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,265 in Massachusetts → Look up another NPI →
Also registered at 230 Maple St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mukesh AgarwalGeneral Practice Dentistry1245434232
- Wilma Aiken, LICSWClinical Social Worker1275662397
- Amanda AliceaCounselor1679815120
- Sonia Alicea, RNRegistered Nurse1487887725
- Jonathan Alicea-DiazCounselor1710259064
- Jeanne Allen, N.P.Family Nurse Practitioner1679543029
Verify Jaehyun Byun in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 265898Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average family medicine physician in 2024
393 Medicare Part D claims for 143 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 13 claims were for opioids.
Most prescribed
- Biktarvy45 claims
- Prednisone26 claims
- Ertapenem23 claims
- Cefuroxime17 claims
- Furosemide16 claims
- Doxycycline Monohydrate15 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.
The MIPS final score for 2023 (Medicare payment program): 97 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $22.40
1 payment: food and beverage; the largest payer was Inari Medical, Inc. The 55,478 providers of this specialty with any payment received $902.55 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
- Holyoke Medical Center IncHolyoke, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jaehyun Byun among 2,265 family medicine physician records in Massachusetts
Jaehyun Byun, M.D. is one of 2,265 family medicine physician records with a practice address in Massachusetts. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 58% of them.
- NPI issued2009 · 58% of these records are older, 39% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2009 · median 2006 among the 1,529 with a school on file
- Record last updated2016 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Family Medicine Physician providers in Massachusetts
There are 2,265 family medicine physician records in Massachusetts.
All 2,265 in Massachusetts → Every provider in Holyoke → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Stephanie Billings, M.D.Holyoke, MA 010401093785412
- Thomas Graziano, M.D.Holyoke, MA 010401790915569
- Jennifer Jurcsak, D.O.Holyoke, MA 010401275791527
- Fred Kim, M.D.Holyoke, MA 010401821065384
- Thomas Klepacki, D.O.Holyoke, MA 010401356398689
- Stephen Levine, M.D.Holyoke, MA 010401528024643
- Ronald Loescher, MDHolyoke, MA 010401487624888
- Elizabeth O Dair, MDHolyoke, MA 010401275599524
Common questions
What is Jaehyun Byun, M.D.'s NPI number?
Jaehyun Byun, M.D.'s National Provider Identifier (NPI) is 1881824225, issued on Jul 20, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Jaehyun Byun, M.D. located?
The NPPES record lists a practice address at 230 Maple St, Holyoke, MA, 01040. Phone: (413) 420-2200. Providers update this record themselves, so call before visiting.
How can I verify Jaehyun Byun, M.D.'s license?
NPPES lists Massachusetts license number 265898, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jaehyun Byun, M.D. prescribe under Medicare Part D?
In 2024, Jaehyun Byun, M.D. had 393 Medicare Part D claims for 143 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Jaehyun Byun, M.D.'s MIPS final score?
The 2023 MIPS final score is 97 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.