Leonard Zalik, M.D
NPI 1689619728 · Anesthesiology Physician · Hinsdale, IL
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leonard Zalik, M.D is a Anesthesiology Physician provider in Hinsdale, IL (NPI 1689619728).
Provider details
- NPI number
- 1689619728
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D
- Sex
- Male
- Sole proprietor
- No
- License
- 036073153 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
119 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Anesthesia for Injection, Drainage Or Aspiration Procedures on Spine Or Spinal Cord of Lower Back Accessed Through Skin Using Imaging Guidance01938 | 25 | $106 |
| Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 19 | $142 |
| Anesthesia for Other Procedure on Large Bowel Using an Endoscope00811 | 18 | $128 |
| Anesthesia for X-Ray Or Radiation Therapy01922 | 18 | $178 |
| Anesthesia for Nerve Block and Injection01991 | 15 | $96 |
| Anesthesia for Exam of Colon Using an Endoscope00812 | 12 | $98 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$19 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-20
- Last updated
- 2016-06-29
Frequently asked questions
- What is Leonard Zalik's NPI number?
- Leonard Zalik's National Provider Identifier (NPI) is 1689619728, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leonard Zalik's specialty?
- Leonard Zalik is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Leonard Zalik located?
- Leonard Zalik's practice location on file with NPPES is 120 N Oak St, Hinsdale, IL 60521-3829.
- What is Leonard Zalik's phone number?
- The practice phone number listed in the NPPES registry for Leonard Zalik is (630) 856-9000.
- Does Leonard Zalik accept Medicare?
- Leonard Zalik is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leonard Zalik's NPI active?
- Yes — Leonard Zalik's NPI (1689619728) is active in the NPPES registry as of the last update on 2016-06-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.