Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. John Tsialas, DO

Individual provider Family Medicine Physician · NPI 1629008602

Dr. John Tsialas, DO is registered under Family Practice in Syosset, New York. Graduated from New York College of Osteo Medicine of New York Institute of Technology in 1994, 32 years ago. Practices with City Medical of Upper East Side PLLC, a 663-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
32
Trained at
New York College of Osteo Medicine of New York Institute of Technology
Licensed in
NY
In the registry since
2006
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

358 Jericho Tpke
Syosset, NY 11791-4544
Phone: (516) 677-9200
Fax: (516) 677-9202
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 205013 (NY)

Record details

NPI number1629008602
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJuly 4, 2006
Last updated in NPPESJune 13, 2019

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolNEW YORK COLLEGE OF OSTEO MEDICINE OF NEW YORK INSTITUTE OF TECHNOLOGY
Graduated 1994 (32 years in practice)
Group practice City Medical Of Upper East Side Pllc — 663 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients735
Services billed 1,316 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

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.

Colleagues at City Medical of Upper East Side PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 663 clinicians in the practice; 12 are shown here.

Other providers in Syosset