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

Dr. William John Jude Engellenner, MD

Individual provider Anatomic Pathology & Clinical Pathology Physician · NPI 1659363364

Dr. William John Jude Engellenner, MD is a Pathology in West Islip, New York. Graduated from State University of New York at Stony Brook, School of Medicine in 1986, 40 years ago. Practices with Pathology and Laboratory Consultants of Long Island PLLC, a 20-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
40
Trained at
State University of New York at Stony Brook, School of Medicine
Licensed in
NY
In the registry since
2005
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

1000 Montauk Hwy
West Islip, NY 11795-4927
Phone: (631) 376-3000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anatomic Pathology & Clinical Pathology Physician (primary) Taxonomy 207ZP0102X · Licence 182397 (NY)

Record details

NPI number1659363364
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 18, 2005
Last updated in NPPESSeptember 12, 2007

Medicare enrollment

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

Medicare specialtyPATHOLOGY
Medical schoolSTATE UNIVERSITY OF NEW YORK AT STONY BROOK, SCHOOL OF MEDICINE
Graduated 1986 (40 years in practice)
Group practice Pathology And Laboratory Consultants Of Long Island Pllc — 20 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Other providers in West Islip