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

Dr. Glenn Fleischhacker, DO

Individual provider Anesthesiology Physician · NPI 1871599597

Dr. Glenn Fleischhacker, DO practises Anesthesiology in Plainview, New York. Graduated from New York College of Osteo Medicine of New York Institute of Technology in 1990, 36 years ago. Practices with North Shore - Lij Anesthesiology, PC, a 1,004-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
36
Trained at
New York College of Osteo Medicine of New York Institute of Technology
Licensed in
NY
In the registry since
2005
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

888 Old Country Rd
Plainview, NY 11803-4914
Phone: (516) 719-3000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence 188267 (NY)

Record details

NPI number1871599597
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJune 27, 2005
Last updated in NPPESMarch 20, 2023
Certification dateMarch 20, 2023

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolNEW YORK COLLEGE OF OSTEO MEDICINE OF NEW YORK INSTITUTE OF TECHNOLOGY
Graduated 1990 (36 years in practice)
Group practice North Shore - Lij Anesthesiology, Pc — 1004 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 patients178
Services billed 185 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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at North Shore - Lij Anesthesiology, PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1004 clinicians in the practice; 12 are shown here.

Other providers in Plainview