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Dr. Daniel I. Schlessinger

Mohs Surgery (MOHS-Micrographic Surgery Physician)

251 E Huron St
Chicago, IL 60611

Who else practices at this address →

Cook County includes primary care (3% of residents) and mental health (4% of residents) shortage areas. About shortage areas

Call (312) 926-7430

  • Medicare participating

At a glance

Years since graduation
7
In the NPI registry since
2015
Medicare patients seen, 2024
94

Licensed in Illinois since 2023, according to the Illinois Department of Financial and Professional Regulation. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.

The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. What an NPI is

Education and training

  • 2019Medical school: Northwestern University Feinberg Medical School
  • 2015Registered with an NPI (national billing number; not a license date)

Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).

Specialties and state licenses

  • MOHS-Micrographic Surgery Physician primary
    IL license 036163810 (first issued 2023; active)
  • Dermatology Physician
    MO license 2020015741 · NE license 34698
  • Internal Medicine Physician
    MA license 1588039432
  • Student in an Organized Health Care Education/Training Program

As reported to the NPI registry. To confirm a license is current, check the state medical board.

Map: Mohs Surgery per capita by county →

Where they work

Hospitals

Medical groups

Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.

Medicare patients and services

Medicare patients, 2024
94
Services billed
556
Patients’ average age
76

Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.

Payments from drug and device companies

In 2025, 8 companies reported 37 payments worth $7,190 in total to this clinician.

By company
AbbVie Inc.$3,736
Nielsen Biosciences, Inc.$3,263
Galderma Laboratories, L.P.$116
Leo Pharma Inc.$24.08
Regeneron Healthcare Solutions, Inc.$17.71
Botanix Sb Inc$15.54
Genzyme Corporation$14.33
Organon LLC$4.21
By type
Consulting Fee$3,263
Travel and Lodging$2,682
Food and Beverage$1,245

What the payments were for

Largest payments other than meals
DateCompanyWhat it was forAmount
Dec 22, 2025Nielsen Biosciences, Inc.
Dec 22, 2025
Consulting Fee
Candin · Immunotherapy
$3,263
Sep 27, 2025AbbVie Inc.
Sep 27, 2025
Travel and Lodging
travel to IRVINE, CA · in-kind
$1,431
Sep 25, 2025AbbVie Inc.
Sep 25, 2025
Travel and Lodging
travel to IRVINE, CA · in-kind
$473
Sep 26, 2025AbbVie Inc.
Sep 26, 2025
Travel and Lodging
travel to IRVINE, CA · in-kind
$473
Sep 27, 2025AbbVie Inc.
Sep 27, 2025
Travel and Lodging
travel to IRVINE, CA · in-kind
$126
Sep 26, 2025AbbVie Inc.
Sep 26, 2025
Travel and Lodging
travel to IRVINE, CA · in-kind
$93.41
Sep 25, 2025AbbVie Inc.
Sep 25, 2025
Travel and Lodging
travel to IRVINE, CA · in-kind
$45.60
Sep 26, 2025AbbVie Inc.
Sep 26, 2025
Travel and Lodging
travel to IRVINE, CA · in-kind
$40.92

Each payment as the company reported it, with the products it named. Meals are counted in the totals above but not listed one by one.

From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.

Who received the most in Illinois →

Other Mohs Surgery clinicians in Chicago

Sources

NPI registry (CMS NPPES, November 2026; record last updated July 21, 2023), Medicare Care Compare, Medicare Physician & Other Practitioners (2024), Medicare Part D Prescribers (2024) and Open Payments (2025). Information is self-reported or billed data and may be out of date; call before visiting.

NPI 1588039432. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.