Quick answers
- Does Bartlomiej T. Leyko accept Medicare assignment?
- Yes. Medicare's clinician data says Bartlomiej T. Leyko accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Bartlomiej T. Leyko see?
- In 2024, CMS data shows 526 Original Medicare patients and 34,024 services for Bartlomiej T. Leyko. This counts Original Medicare only and measures volume, not quality.
- What is Bartlomiej T. Leyko's NPI number?
- 1538124946. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Bartlomiej T. Leyko, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 526 |
|---|---|
| Services billed to Medicare | 34,024 |
| Different services or procedures | 20 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Test for allergy using allergenic extract (95004)11,925 services
- Professional service for preparation and provision of 1 or more antigens (95165)11,330 services
- Professional service for multiple injections of allergen (95117)5,330 services
- Professional service for single injection of allergen (95115)3,070 services
- Test for allergy using allergenic extract injected into skin (95024)894 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- High blood pressure70%
- Arthritis54%
- Asthma39%
- Anxiety23%
- Chronic kidney disease23%
Practice locations
Addresses where Bartlomiej T. Leyko is enrolled with Medicare (CMS data updated October 2, 2026).
- 13967 W Grand Ave, Suite 102Surprise, AZ 85374 (623) 556‑9060
- 2525 W Greenway Rd, Suite 140Phoenix, AZ 85023 (602) 993‑7540
- 2905 W Warner Rd, Suite 24Chandler, AZ 85224 (480) 834‑1352
- 300 W Clarendon Ave, Suite 120Phoenix, AZ 85013 (602) 277‑3337
Group practices
Medicare enrollment lists Bartlomiej T. Leyko as a member of this group (CMS data updated October 2, 2026).
- Allergy Asthma Clinic Ltd4 clinicians in the group
Specialties
- Allergy/Immunologyprimary
Other allergist and immunologists in Arizona
Clinicians with the same Medicare primary specialty in Arizona — not a recommendation.
Other clinicians in Allergy Asthma Clinic Ltd
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1999 (27 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1538124946 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians