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

Dr. Leslie Jay Block, MD

Individual provider Pediatric Otolaryngology Physician · NPI 1750300166

Dr. Leslie Jay Block, MD is an Otolaryngology in Lake Forest, Illinois. Qualified in 1972, 54 years ago. Practices with Lake County Head and Neck Specialists SC, an 8-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
54
Licensed in
IL
In the registry since
2006
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

700 N Westmoreland Rd Bld F
Lake Forest, IL 60045-1679
Phone: (847) 295-1114
Fax: (847) 295-9373
Show map & directions

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

Specialties & licences

Pediatric Otolaryngology Physician (primary) Taxonomy 207YP0228X (IL)

Record details

NPI number1750300166
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 18, 2006
Last updated in NPPESJuly 8, 2007
Mailing address700 N Westmoreland Rd, Bld F, Lake Forest, IL 60045-1679

Medicare enrollment

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

Medicare specialtyOTOLARYNGOLOGY
Medical schoolOTHER
Graduated 1972 (54 years in practice)
Group practice Lake County Head And Neck Specialists S.C. — 8 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount