Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Dr. Evadne CHI Ong, MD

Individual provider Internal Medicine Physician · NPI 1336391721

Dr. Evadne CHI Ong, MD practises Internal Medicine in Jamestown, New York. Qualified in 2003, 23 years ago. Practices with Great Lakes Physician Practice PC, a 143-clinician group, accepts Medicare assignment and offers telehealth. Licensed in New York.

Years since qualifying
23
Licensed in
NY
In the registry since
2008
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

15 S Main St Ste 150
Jamestown, NY 14701-6627
Phone: (716) 484-8610
Fax: (716) 484-3777
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 267555-01 (NY)

Record details

NPI number1336391721
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 16, 2008
Last updated in NPPESJanuary 25, 2024
Certification dateJuly 14, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2003 (23 years in practice)
Group practice Great Lakes Physician Practice Pc — 143 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients332
Services billed 1,661 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Great Lakes Physician Practice PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 143 clinicians in the practice; 12 are shown here.

Other providers in Jamestown