Gerald Mark Zenk, M.D
Anesthesiology Physician · Park Ridge, IL
Gerald Mark Zenk, M.D is an anesthesiology physician with a practice address in Park Ridge, Illinois, and NPI 1922291434, issued on Aug 20, 2007. Check the license (Illinois 036-118831, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Gerald Mark Zenk
- Credential
- M.D
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- 036-118831 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1775 W Dempster St, Park Ridge, IL 60068
- Phone
- (847) 723-2210
- Enumerated
- Aug 20, 2007
- Record last updated
- Feb 19, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20200304001871); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 2,575 in Illinois → Look up another NPI →
Also registered at 1775 W Dempster St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Gerald Mark Zenk in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036-118831Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Northern Arizona Healthcare CorporationFlagstaff, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gerald Mark Zenk among 2,575 anesthesiology physician records in Illinois
Gerald Mark Zenk, M.D is one of 2,575 anesthesiology physician records with a practice address in Illinois. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 39% of them.
- NPI issued2007 · 39% of these records are older, 53% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2007 · median 2006 among the 1,608 with a school on file
- Record last updated2020 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
71 anesthesiology physician records list a practice address in Park Ridge
They are 71 of the 2,577 NPPES records with a practice address in Park Ridge, and 2,575 anesthesiology physician records in Illinois.
All 2,575 in Illinois → Every provider in Park Ridge → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Dinna Billote, M.D.Park Ridge, IL 600681164441317
- Linda Castaneda, DOPark Ridge, IL 600681033157839
- Hyuk Chung, MDPark Ridge, IL 600681588752042
- Alphonsa George, M.D.Park Ridge, IL 600681932145570
- Jae Hyun, MDPark Ridge, IL 600681154410249
- Harold Jesser, MDPark Ridge, IL 600681629167705
- Eric Kapustka, M.DPark Ridge, IL 600681710928692
- Jonathon Krohn, MDPark Ridge, IL 600681770671257
Common questions
What is Gerald Mark Zenk, M.D's NPI number?
Gerald Mark Zenk, M.D's National Provider Identifier (NPI) is 1922291434, issued on Aug 20, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Gerald Mark Zenk, M.D located?
The NPPES record lists a practice address at 1775 W Dempster St, Park Ridge, IL, 60068. Phone: (847) 723-2210. Providers update this record themselves, so call before visiting.
How can I verify Gerald Mark Zenk, M.D's license?
NPPES lists Illinois license number 036-118831, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.