Katherine Gehlmann Conner, M.D.
Allergy & Immunology Physician · Park Ridge, IL
Katherine Gehlmann Conner, M.D. is an allergy & immunology physician with a practice address in Park Ridge, Illinois, and NPI 1720216120, issued on Jun 24, 2009. Check the license (Illinois 036.129920, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Katherine Gehlmann Conner
- Credential
- M.D.
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License number
- 036.129920 IL
Self-reported in NPPES; status is on the state search - Practice location
- 2604 Dempster St Ste 204, Park Ridge, IL 60068
- Phone
- (847) 635-7300
- Enumerated
- Jun 24, 2009
- Record last updated
- Jul 23, 2025
- Fax
- (847) 635-7556
- Medicaid ID
- 36129920 IL
- Medicare enrollment
- Enrolled (PECOS I20141006001668); accepts Medicare assignment
- Medical or professional school
- Rush Medical College Of Rush University, 2009
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 162 in Illinois → Look up another NPI →
Also registered at 2604 Dempster St Ste 204
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sol Drapkin, MDAllergy & Immunology Physician1912986563
- Waheeda Hirani, MDAllergy & Immunology Physician1659350205
- Ricky Shapiro, PA CPhysician Assistant1457330425
Verify Katherine Gehlmann Conner 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 036.129920Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
47% fewer Medicare Part D claims than the average allergy & immunology physician in 2024
391 Medicare Part D claims for 125 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 33% of claims.
Most prescribed
- Montelukast Sodium72 claims
- Albuterol Sulfate Hfa46 claims
- Ipratropium Bromide30 claims
- Prednisone30 claims
- Azithromycin21 claims
- Fluticasone Propionate16 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $1,153.66
55 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 2,496 providers of this specialty with any payment received $8,321.81 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Allergy Partners PLLCPark Ridge, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Gehlmann Conner among 162 allergy & immunology physician records in Illinois
Katherine Gehlmann Conner, M.D. is one of 162 allergy & immunology physician records with a practice address in Illinois. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 67% of them.
- NPI issued2009 · 67% of these records are older, 31% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2009 · median 2001 among the 114 with a school on file
- Record last updated2025 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207K00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy & Immunology Physician providers in Illinois
There are 162 allergy & immunology physician records in Illinois.
All 162 in Illinois → Every provider in Park Ridge → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Sol Drapkin, MDPark Ridge, IL 600681912986563
- Waheeda Hirani, MDPark Ridge, IL 600681659350205
- Salmon Goldberg, M.D.Northbrook, IL 600621487674883
- Elena Koles, M.D.Northbrook, IL 600621902984149
- John Lawson, M.D.Northbrook, IL 600621689864357
- Deeba Masood, M.D.Vernon Hills, IL 600611396787339
- Daniel Yamshon, DOSkokie, IL 600771558448589
- Thao Doan, MDLibertyville, IL 600481649749813
Common questions
What is Katherine Gehlmann Conner, M.D.'s NPI number?
Katherine Gehlmann Conner, M.D.'s National Provider Identifier (NPI) is 1720216120, issued on Jun 24, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Gehlmann Conner, M.D. located?
The NPPES record lists a practice address at 2604 Dempster St Ste 204, Park Ridge, IL, 60068. Phone: (847) 635-7300. Providers update this record themselves, so call before visiting.
How can I verify Katherine Gehlmann Conner, M.D.'s license?
NPPES lists Illinois license number 036.129920, 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.
How much does Katherine Gehlmann Conner, M.D. prescribe under Medicare Part D?
In 2024, Katherine Gehlmann Conner, M.D. had 391 Medicare Part D claims for 125 beneficiaries; the average among allergy & immunology physician prescribers was 741. Part D covers Medicare prescriptions only.
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.