NPPES file of Aug 9, 2026

Jonathan Lee Bayuk, DO

Allergy & Immunology Physician · Northampton, MA

Jonathan Lee Bayuk, DO is an allergy & immunology physician with a practice address in Northampton, Massachusetts, and NPI 1588637102, issued on Feb 13, 2006. Check the license (Massachusetts 223052, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1588637102
Name
Jonathan Lee Bayuk
Credential
DO
Primary taxonomy
Allergy & Immunology Physician 207K00000X
License number
223052 MA
Self-reported in NPPES; status is on the state search
Practice location
269 Locust St, Northampton, MA 01062
Phone
(413) 586-0769
Enumerated
Feb 13, 2006
Record last updated
Feb 13, 2015 (not updated in 11 years: call before relying on the address or phone)
Fax
(413) 584-0392
Medicaid ID
110040659/A MA
Medicare enrollment
Enrolled (PECOS I20050701000439); accepts Medicare assignment
Medical or professional school
University Of New England, College Of Osteo Medicine, 2000
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 269 Locust St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Nancy Balin, M.D., F.A.C.S.Ophthalmology Physician1629073879
  2. Angela Cherniak, O.D.Optometrist1699115477
  3. Martin Wohl, D.D.S.General Practice Dentistry1336228790

Verify Jonathan Lee Bayuk in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
    Search for license 223052
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Massachusetts license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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2.9 times the Medicare Part D claims of the average allergy & immunology physician in 2024

2,172 Medicare Part D claims for 407 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 53% of claims.

  1. Jonathan Bayuk2,172
  2. Specialty average741

Most prescribed

  1. Montelukast Sodium144 claims
  2. Xolair123 claims
  3. Ipratropium Bromide111 claims
  4. Cromolyn Sodium98 claims
  5. Albuterol Sulfate Hfa90 claims
  6. Epinephrine88 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: $39,360.10

218 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 2,496 providers of this specialty with any payment received $8,321.81 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Jonathan Bayuk$39,360
  2. Specialty average$8,322

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

  1. Allergy And Immunology Associates OF New England LLCFlorence, MA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Jonathan Lee Bayuk among 121 allergy & immunology physician records in Massachusetts

Jonathan Lee Bayuk, DO is one of 121 allergy & immunology physician records with a practice address in Massachusetts. 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 2006, is newer than 14% of them.

  • NPI issued2006 · 14% of these records are older, 52% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 71% of these records are
  • Graduated2000 · median 2003 among the 86 with a school on file
  • Record last updated2015 · 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 207K00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Allergy & Immunology Physician providers in Massachusetts

There are 121 allergy & immunology physician records in Massachusetts.

The 8 allergy & immunology physician records with the nearest ZIP codes

  1. Barry Elson, M.D.Northampton, MA 010601730150855
  2. Vanessa Vanstee, M.D.Westfield, MA 010851528094372
  3. Jackie Garrett, M.D.West Springfield, MA 010891740487867
  4. David Robertson, MDSpringfield, MA 011041265647945
  5. Jasdeep Badwal, M.D.Springfield, MA 011071750723268
  6. Thomas Edwards, M.D.Pittsfield, MA 012011740215771
  7. Maria Castells, MDGardner, MA 014401427039478
  8. Francisco Bonilla, M.D.Leominster, MA 014531245298215

Common questions

What is Jonathan Lee Bayuk, DO's NPI number?

Jonathan Lee Bayuk, DO's National Provider Identifier (NPI) is 1588637102, issued on Feb 13, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Jonathan Lee Bayuk, DO located?

The NPPES record lists a practice address at 269 Locust St, Northampton, MA, 01062. Phone: (413) 586-0769. Providers update this record themselves, so call before visiting.

How can I verify Jonathan Lee Bayuk, DO's license?

NPPES lists Massachusetts license number 223052, 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 Jonathan Lee Bayuk, DO prescribe under Medicare Part D?

In 2024, Jonathan Lee Bayuk, DO had 2,172 Medicare Part D claims for 407 beneficiaries; the average among allergy & immunology physician prescribers was 741. 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.