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Dr. Jon M. Chan, M.D.

ENT (Otolaryngology) (Otolaryngology Physician)

  • Medicare participating

At a glance

Years since graduation
18
In the NPI registry since
2008
Medicare patients seen, 2024
67

Licensed in Illinois since 2017, according to the Illinois Department of Financial and Professional Regulation. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.

The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is

Education and training

  • 2008Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier

Medicare’s Care Compare data doesn’t list this clinician’s medical school. Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).

Specialties and state licenses

  • Otolaryngology Physician primary
    IL license 036.144383 (first issued 2017; active) · ND license 23031 · NY license 293812 · OH license 35.120793 · PA license MT193950

As reported to the NPI registry. To confirm a license is current, check the state medical board.

Map: ENT (Otolaryngology) per capita by county →

Where they work

Hospitals

Medical groups

Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.

Medicare patients and services

Medicare patients, 2024
67
Services billed
138
Patients’ average age
71
Most frequent Medicare services, 2023
ServiceTimesPatients
Established patient office or other outpatient visit, 20-29 minutes7665
Established patient office or other outpatient visit, 30-39 minutes4237
Diagnostic exam of voice box using a flexible endoscope3731
Diagnostic exam of nasal passages using an endoscope2219
New patient office or other outpatient visit, 30-44 minutes2020
Fine needle aspiration biopsy using ultrasound guidance, first growth1513
Biopsy of voice box using an endoscope1212
New patient office or other outpatient visit, 45-59 minutes1212
Established patient office or other outpatient visit, 10-19 minutes1211

Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.

Medicare prescriptions

Most prescribed drugs, Medicare Part D 2024
DrugPrescriptions
Oxycodone Hcl
Other prescribers in Buffalo, NY
15

Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.

Other ENT (Otolaryngology) clinicians in Buffalo

Sources

NPI registry (CMS NPPES, November 2026; record last updated September 29, 2025), Medicare Care Compare, Medicare Physician & Other Practitioners (2024), Medicare Part D Prescribers (2024) and Open Payments (2025). Information is self-reported or billed data and may be out of date; call before visiting.

NPI 1053577924. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.