Margaret Zabiega, M.D.
NPI 1578564654 · Hospitalist Physician · Joliet, IL
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Zabiega, M.D. is a Hospitalist Physician provider in Joliet, IL (NPI 1578564654).
Provider details
- NPI number
- 1578564654
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 036110941 (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
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,725 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 820 | $80 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 266 | $174 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 246 | $120 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 184 | $116 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 117 | $82 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 18 | 17 |
| Cephalexin | 17 | 16 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 13 | 12 |
| Cefuroxime Axetilbrand: Cefuroxime | 11 | 11 |
| Metoprolol Succinate | 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 , 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
Additional practice locations (2)
- 1801 N Senate BlvdSuite 203Indianapolis, IN 46202-1228Phone: (317) 962-5820Fax: (317) 962-3916
- 1801 N Senate BlvdSuite 203Indianapolis, IN 46202-1228Phone: (317) 962-5820Fax: (317) 962-3916
Registry dates
- Enumerated
- 2005-08-10
- Last updated
- 2023-08-29
- Certified
- 2023-08-29
Frequently asked questions
- What is Margaret Zabiega's NPI number?
- Margaret Zabiega's National Provider Identifier (NPI) is 1578564654, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Zabiega's specialty?
- Margaret Zabiega is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Margaret Zabiega located?
- Margaret Zabiega's practice location on file with NPPES is 2100 Glenwood Ave, Joliet, IL 60435.
- What is Margaret Zabiega's phone number?
- The practice phone number listed in the NPPES registry for Margaret Zabiega is (815) 725-2121.
- Does Margaret Zabiega accept Medicare?
- Margaret Zabiega is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Zabiega's NPI active?
- Yes — Margaret Zabiega's NPI (1578564654) is active in the NPPES registry as of the last update on 2023-08-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.