Margaret Gladysz, MD
NPI 1366516312 · Endocrinology, Diabetes & Metabolism Physician · Milwaukee, WI
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Gladysz, MD is a Endocrinology, Diabetes & Metabolism Physician provider in Milwaukee, WI (NPI 1366516312).
Provider details
- NPI number
- 1366516312
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 51531-20 (WI)
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 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
837 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 | 381 | $72 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 116 | $117 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 55 | $118 |
| Hemoglobin A1c Level83036 | 53 | $9 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 43 | $8 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 36 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 41 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 237 | 78 |
| Insulin Glargine,hum.rec.anlogbrand: Lantus Solostar | 118 | 53 |
| Methimazole | 109 | 27 |
| Metformin Hclbrand: Metformin Hcl Er | 88 | 27 |
| Alendronate Sodium | 87 | 22 |
| Levothyroxine Sodiumbrand: Synthroid | 82 | 25 |
| Semaglutide |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-20
- Last updated
- 2024-11-07
- Certified
- 2024-11-07
Frequently asked questions
- What is Margaret Gladysz's NPI number?
- Margaret Gladysz's National Provider Identifier (NPI) is 1366516312, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Gladysz's specialty?
- Margaret Gladysz is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Margaret Gladysz located?
- Margaret Gladysz's practice location on file with NPPES is 2801 W Kinnickinnic River Pkwy, Milwaukee, WI 53215-3669.
- What is Margaret Gladysz's phone number?
- The practice phone number listed in the NPPES registry for Margaret Gladysz is (414) 649-6780.
- Does Margaret Gladysz accept Medicare?
- Margaret Gladysz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Gladysz's NPI active?
- Yes — Margaret Gladysz's NPI (1366516312) is active in the NPPES registry as of the last update on 2024-11-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.