Stephan Kowalyk, M.D.
NPI 1457458168 · Endocrinology, Diabetes & Metabolism Physician · Greensburg, PA
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephan Kowalyk, M.D. is a Endocrinology, Diabetes & Metabolism Physician provider in Greensburg, PA (NPI 1457458168).
Provider details
- NPI number
- 1457458168
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD052412L (PA)
Specialties & taxonomies
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
2,348 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 823 | $113 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 604 | $69 |
| Continuous Monitoring of Blood Sugar Level in Tissue Fluid Using Sensor Under Skin With Interpretation and Report95251 | 264 | $30 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 204 | $104 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 168 | $76 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 141 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Semaglutidebrand: Ozempic | 1,983 | 348 |
| Levothyroxine Sodium | 1,678 | 364 |
| Insulin Glargine/Lixisenatidebrand: Soliqua 100-33 | 1,020 | 184 |
| Empagliflozinbrand: Jardiance | 902 | 174 |
| Insulin Glargine,hum.rec.anlogbrand: Lantus Solostar | 769 | 194 |
| Pen Needle, Diabeticbrand: Nano 2nd Gen Pen Needle | 640 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$69,006 across 325 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
- 2006-09-17
- Last updated
- 2016-01-08
Frequently asked questions
- What is Stephan Kowalyk's NPI number?
- Stephan Kowalyk's National Provider Identifier (NPI) is 1457458168, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephan Kowalyk's specialty?
- Stephan Kowalyk is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Stephan Kowalyk located?
- Stephan Kowalyk's practice location on file with NPPES is 540 South St, Greensburg, PA 15601-2774.
- What is Stephan Kowalyk's phone number?
- The practice phone number listed in the NPPES registry for Stephan Kowalyk is (724) 832-3130.
- Does Stephan Kowalyk accept Medicare?
- Stephan Kowalyk is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephan Kowalyk's NPI active?
- Yes — Stephan Kowalyk's NPI (1457458168) is active in the NPPES registry as of the last update on 2016-01-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.