Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Kostas Sideridis, DO

Individual provider Gastroenterology Physician · NPI 1003913682

Kostas Sideridis, DO is a Gastroenterology in Syosset, New York. Graduated from New York College of Osteo Medicine of New York Institute of Technology in 1999, 27 years ago. Practices with Long Island Medical PC, a 4-clinician group, accepts Medicare assignment and offers telehealth. Licensed in New York.

Years since qualifying
27
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.

See every abbreviation used in this directory →

Practice location Address checks out

237 Jericho Tpke
Syosset, NY 11791
Phone: (516) 584-6400
Fax: (516) 584-6399
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 220299 (NY)

Record details

NPI number1003913682
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedSeptember 17, 2006
Last updated in NPPESJune 2, 2009
Mailing address237 Jericho Turnpike, Syosset, NY 11791

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolNEW YORK COLLEGE OF OSTEO MEDICINE OF NEW YORK INSTITUTE OF TECHNOLOGY
Graduated 1999 (27 years in practice)
Group practice Long Island Medical Pc — 4 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations5 on file with Medicare

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