DR. KATHERINE GEHLMANN CONNER M.D.
NPI 1720216120
Allergy & Immunology in Park Ridge, IL

Q: What is Katherine Conner's NPI number?

The NPI number for Katherine Conner is 1720216120. It was assigned to this individual provider in the NPPES registry on June 24, 2009.

Q: What is Katherine Conner's specialty?

The primary specialty registered for this NPI is Allergy & Immunology with taxonomy code 207K00000X.

Q: When was this NPI record last updated?

The NPPES record for Katherine Conner was last updated on July 23, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since June 24, 2009PECOS EnrolledAccepts Medicare Assignment

2604 DEMPSTER ST STE 204, PARK RIDGE, IL 60068(847) 635-7300(847) 635-7556 Get Directions Write a Review

NPPES record last updated: July 23, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 18, 2023, May 2, 2022, Dec 23, 2021 and 2 more (5 updates tracked since 2015).

On this page

About Dr. Katherine Gehlmann Conner M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. KATHERINE GEHLMANN CONNER M.D. (NPI 1720216120) is an individual allergy & immunology provider in Park Ridge, Illinois, licensed in Illinois (036.129920) and active in the NPI registry since June 2009. She is enrolled in Medicare PECOS, is affiliated with Northwest Community Hospital 1, and is a graduate of Rush Medical College Of Rush University (2009).

NPPES Registry Identity

NPI1720216120

Entity TypeIndividualFemale

Primary Taxonomy207K00000X

Provider Legal NameDR. KATHERINE GEHLMANN CONNERCredential: M.D.

Location Address2604 DEMPSTER ST STE 204Park Ridge, IL 60068-8426

Mailing AddressPo Box 603725Charlotte, NC 28260-3725 · (828) 575-2625 · Fax (828) 350-2174

Phone(847) 635-7300

Fax(847) 635-7556

Sole ProprietorNo

Medical School CMSRush Medical College Of Rush UniversityGraduated 2009

Enumeration DateJune 24, 2009

Last NPPES UpdateJuly 23, 20255 updates tracked since enumeration

NPPES CertifiedJuly 23, 2025

✔ NPI 1720216120 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAllergy & ImmunologyAllopathic & Osteopathic Physicians

Taxonomy Code207K00000X

License✔ Licensed in IL · 036.129920

Definition

An allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Selected examples of such conditions include asthma, anaphylaxis, rhinitis, eczema, and adverse reactions to drugs, foods, and insect stings as well as immune deficiency diseases (both acquired and congenital), defects in host defense, and problems related to autoimmune disease, organ transplantation, or malignancies of the immune system.

2604 DEMPSTER ST STE 204, Park Ridge, IL 60068

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Other Identifiers 3

OtherF400166787IL · Medicare Ptan

Medicaid36129920IL

OtherF400166785IL · Medicare Ptan

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware, Oscar Health and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Katherine Gehlmann Conner M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3577783000

PECOS Enrollment IDI20141006001668

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Katherine Conner reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Allergy Partners, PLLC

Same address

Allergy & Immunology

2604 DEMPSTER ST STE 204
Park Ridge, IL 60068

Reassigned Medicare billing, Illinois enrollment
7 clinicians in this Medicare group

NPI 1265701023 (847) 635-7300

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 9

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Test for allergy using allergenic extract 95004

An allergy test with allergenic extract is a diagnostic method to identify substances causing allergic reactions. Small amounts of common allergens are introduced to your body, usually through skin pricks or blood tests. Your body's response helps determine your allergies.

1,398 services40 patients

Professional service for preparation and provision of 1 or more antigens 95165

This service involves the creation and supply of antigens, substances that stimulate your immune system to fight diseases. These antigens can be used in vaccines or allergy tests to help your body build defenses against specific health threats.

1,131 services52 patients

Professional service for multiple injections of allergen 95117

The professional service for multiple injections of allergens involves administering small doses of specific allergens into your body. This is done to help your immune system become less sensitive to them, reducing your allergic reaction over time. It's a safe, effective way to manage allergies.

558 services72 patients

Test for allergy using allergenic extract injected into skin 95024

An allergy skin test involves injecting a small amount of allergenic extract into your skin. This test helps determine if you're allergic to specific substances. If allergic, a small red bump appears at the test site. It's safe and quick.

172 services12 patients

Professional service for single injection of allergen 95115

A single allergen injection is a procedure where a small amount of a specific allergen is injected into your body. This is done to test your body's reaction to the allergen or to help your immune system become less sensitive to it, reducing allergic symptoms.

163 services25 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

109 services77 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Northwest Community Hospital 1

Acute Care Hospitals · Arlington Heights, IL

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140252

Location800 W Central RoadArlington Heights, IL 60005 · Cook County

Emergency services Birthing friendly

Referred Medical Equipment & Supplies CMS DME claims 3

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Supplies for maintenance of non-insulin drug infusion catheter, per week (list drugs separately) A4221

DME-Other DME · category DE017N

1 supplier12 claims24 services$18.32 avg. paid by Medicare

Injection, immune globulin (cuvitru), 100 mg J1555

Treatment-Injections and Infusions (nononcologic) · category RI008N

1 supplier12 claims4,800 services$11.70 avg. paid by Medicare

Supplies for external non-insulin drug infusion pump, syringe type cartridge, sterile, each K0552

DME-Other DME · category DE000N

1 supplier12 claims52 services$2.36 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ALLERGY PARTNERS, PLLC

Allergy & Immunology

2604 DEMPSTER ST STE 204
PARK RIDGE, IL 60068

Cook County (847) 635-7300

RICKY D SHAPIRO PA C

Physician Assistant

2604 DEMPSTER ST STE 204
PARK RIDGE, IL 60068

Cook County (847) 635-7300

WAHEEDA M HIRANI MD

Allergy & Immunology

2604 DEMPSTER ST STE 204
PARK RIDGE, IL 60068

Cook County (847) 635-7300

SOL DRAPKIN MD

Allergy & Immunology

2604 DEMPSTER ST STE 204
PARK RIDGE, IL 60068

Cook County (847) 635-7300

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Katherine Conner's NPI number?

The NPI number for Katherine Conner is 1720216120. It was assigned to this individual provider in the NPPES registry on June 24, 2009.

Where is Katherine Conner located?

Katherine Conner practices at 2604 Dempster St Ste 204, Park Ridge, IL 60068. The listed phone number is (847) 635-7300.

What is Katherine Conner's specialty?

The primary specialty registered for this NPI is Allergy & Immunology with taxonomy code 207K00000X.

Is Katherine Conner enrolled in Medicare?

Yes. Katherine Conner is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Katherine Conner's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Katherine Conner reassigns Medicare benefits to Allergy Partners, PLLC (Park Ridge, IL). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Katherine Conner's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Katherine Conner accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Oscar Health, Oscar Health Plan of North Carolina, Inc and UnitedHealthcare list Katherine Conner as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Katherine Conner affiliated with any hospitals?

According to CMS data, Katherine Conner is affiliated with Northwest Community Hospital 1.

When was this NPI record last updated?

The NPPES record for Katherine Conner was last updated on July 23, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.