Kathy Sonenthal, M.D.
NPI 1265452940 · Allergy & Immunology Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kathy Sonenthal, M.D. is a Allergy & Immunology Physician provider in Chicago, IL (NPI 1265452940).
Provider details
- NPI number
- 1265452940
- Entity type
- Individual
- Primary specialty
- Allergy & Immunology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 036-080078 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
1,232 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) |
|---|---|---|
| Test for Allergy Using Allergenic Extract95004 | 494 | $4 |
| Professional Service for Preparation and Provision of 1 Or More Antigens95165 | 303 | $15 |
| Professional Service for Multiple Injections of Allergen95117 | 227 | $13 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 170 | $124 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 25 | $173 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 13 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 161 | 60 |
| Prednisone | 109 | 58 |
| Montelukast Sodium | 105 | 30 |
| Fluticasone Propionate | 99 | 40 |
| Azelastine Hcl | 63 | 20 |
| Umeclidinium Bromidebrand: Incruse Ellipta | 34 | 13 |
| Budesonide/Formoterol Fumaratebrand: Budesonide-Formoterol Fumarate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$728 across 27 records (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
- 2006-07-19
- Last updated
- 2021-12-07
- Certified
- 2021-12-07
Frequently asked questions
- What is Kathy Sonenthal's NPI number?
- Kathy Sonenthal's National Provider Identifier (NPI) is 1265452940, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kathy Sonenthal's specialty?
- Kathy Sonenthal is listed in the NPPES registry with a primary specialty of Allergy & Immunology Physician (Allopathic & Osteopathic Physicians).
- Where is Kathy Sonenthal located?
- Kathy Sonenthal's practice location on file with NPPES is John H. Stroger, Jr. Hospital of Cook County, Chicago, IL 60612-3714.
- What is Kathy Sonenthal's phone number?
- The practice phone number listed in the NPPES registry for Kathy Sonenthal is (312) 864-6000.
- Does Kathy Sonenthal accept Medicare?
- Kathy Sonenthal is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kathy Sonenthal's NPI active?
- Yes — Kathy Sonenthal's NPI (1265452940) is active in the NPPES registry as of the last update on 2021-12-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.