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DIANE L OZOG MD
NPI 1972647154
Allergy & Immunology in Naperville, IL

Active since February 19, 2007PECOS EnrolledAccepts Medicare Assignment
1331 W 75TH ST STE 303, NAPERVILLE, IL 60540(630) 652-0606(630) 652-9900 Get Directions Write a Review

NPPES record last updated: October 3, 2018. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Diane L Ozog Md NPPES

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

DIANE L OZOG MD (NPI 1972647154) is an individual allergy & immunology provider in Naperville, Illinois, licensed in Illinois (036067853) and active in the NPI registry since February 2007. She is enrolled in Medicare PECOS, is affiliated with Edward Hospital, and is a graduate of Chicago College Of Medicine And Surgery (1982).

NPPES Registry Identity

NPI1972647154
Entity TypeIndividualFemale
Primary Taxonomy207K00000X
Provider Legal NameDIANE L OZOGCredential: MD
Location Address1331 W 75TH ST STE 303Naperville, IL 60540-9311
Mailing Address1331 W 75th St Ste 303Naperville, IL 60540-9311 · (630) 652-0606 · Fax (630) 652-9900
Phone(630) 652-0606
Fax(630) 652-9900
Sole ProprietorNo
Medical School CMSChicago College Of Medicine And SurgeryGraduated 1982
Enumeration DateFebruary 19, 2007
Last NPPES UpdateOctober 3, 2018
✔ NPI 1972647154 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAllergy & ImmunologyAllopathic & Osteopathic Physicians
Taxonomy Code207K00000X
License✔ Licensed in IL · 036067853
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.
Also ListedPediatrics · Pediatric Allergy/ImmunologyTaxonomy 2080P0201X · License 036067853 (IL)
1331 W 75TH ST STE 303, Naperville, IL 60540
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health.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

Diane L Ozog Md 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 ID143267484
PECOS Enrollment IDI20101109000078
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 Diane Ozog reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Diane L Ozog, Mdsc
Same address
Allergy & Immunology
1331 W 75TH ST STE 303
Naperville, IL 60540
  • Reassigned Medicare billing, Illinois enrollment
  • 3 clinicians in this Medicare group
NPI 1245374875 (630) 652-0606

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 8

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.
1,017 services26 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.
478 services22 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.
356 services20 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.
286 services22 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
246 services138 patients
Test to measure expiratory airflow and volume 94010
This test, known as spirometry, assesses how well your lungs work. It measures how much air you can inhale, how much you can exhale and how quickly you can exhale. It's non-invasive and helps diagnose conditions like asthma or COPD.
151 services93 patients

Hospital Affiliations CMS Care Compare

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

Edward Hospital

Acute Care Hospitals · Naperville, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140231
Location801 South WashingtonNaperville, IL 60540 · Du Page 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.

Levalbuterol, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose, 0.5 mg J7614
DME-Drugs Administered Through DME · category DG006N
9 suppliers23 claims2,769 services$0.04 avg. paid by Medicare
Budesonide, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose form, up to 0.5 mg J7626
DME-Drugs Administered Through DME · category DG000N
7 suppliers16 claims930 services$0.75 avg. paid by Medicare
Pharmacy dispensing fee for inhalation drug(s); per 30 days Q0513
DME-Other DME · category DE000N
13 suppliers30 claims30 services$24.27 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 2

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

MRS. EMILY CATHERINE TASCH P.A. - C
Physician Assistant
1331 W 75TH ST STE 303
NAPERVILLE, IL 60540
Dupage County (630) 652-0606
DIANE L OZOG, MDSC
Allergy & Immunology
1331 W 75TH ST STE 303
NAPERVILLE, IL 60540
Dupage County (630) 652-0606

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 Diane Ozog's NPI number?

The NPI number for Diane Ozog is 1972647154. It was assigned to this individual provider in the NPPES registry on February 19, 2007.

Where is Diane Ozog located?

Diane Ozog practices at 1331 W 75th St Ste 303, Naperville, IL 60540. The listed phone number is (630) 652-0606.

What is Diane Ozog's specialty?

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

Is Diane Ozog enrolled in Medicare?

Yes. Diane Ozog 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 Diane Ozog's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Diane Ozog reassigns Medicare benefits to Diane L Ozog, Mdsc (Naperville, 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 Diane Ozog's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Diane Ozog accept?

Health plans from Oscar Health list Diane Ozog 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 Diane Ozog affiliated with any hospitals?

According to CMS data, Diane Ozog is affiliated with Edward Hospital.

When was this NPI record last updated?

The NPPES record for Diane Ozog was last updated on October 3, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years 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.