Gregory Zagaja
NPI 1760547509 · Urology Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Urology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Zagaja is a Urology Physician provider in Chicago, IL (NPI 1760547509).
Provider details
- NPI number
- 1760547509
- Entity type
- Individual
- Primary specialty
- Urology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 036089488 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
362 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 218 | $68 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 31 | $189 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 23 | $149 |
| Removal of Lymph Nodes of Both Sides of Pelvis Using an Endoscope38571 | 21 | $326 |
| Surgical Removal of Prostate and Surrounding Lymph Nodes Using an Endoscope55866 | 21 | $1,219 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Solifenacin Succinate | 28 | — |
| Finasteride | 24 | 11 |
| Tamsulosin Hcl | 16 | — |
| Alfuzosin Hclbrand: Alfuzosin Hcl Er | 11 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-12-22
- Last updated
- 2022-10-24
Frequently asked questions
- What is Gregory Zagaja's NPI number?
- Gregory Zagaja's National Provider Identifier (NPI) is 1760547509, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Zagaja's specialty?
- Gregory Zagaja is listed in the NPPES registry with a primary specialty of Urology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Zagaja located?
- Gregory Zagaja's practice location on file with NPPES is 5841 S Maryland Ave, Chicago, IL 60637-1443.
- What is Gregory Zagaja's phone number?
- The practice phone number listed in the NPPES registry for Gregory Zagaja is (888) 824-0200.
- Does Gregory Zagaja accept Medicare?
- Gregory Zagaja is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Zagaja's NPI active?
- Yes — Gregory Zagaja's NPI (1760547509) is active in the NPPES registry as of the last update on 2022-10-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.