Quick answers
- Does Gretchen M. Kreizenbeck accept Medicare assignment?
- Yes. Medicare's clinician data says Gretchen M. Kreizenbeck 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.
- What is Gretchen M. Kreizenbeck's NPI number?
- 1770761777. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gretchen M. Kreizenbeck works
Medicare's Facility Affiliation Data lists Gretchen M. Kreizenbeck at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- St Clair HospitalPittsburgh, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390228
Practice locations
Addresses where Gretchen M. Kreizenbeck is enrolled with Medicare (CMS data updated October 2, 2026).
- 1000 Bower Hill RdPittsburgh, PA 15243 (412) 942‑4000
- 110 Fort Couch Rd, Suite 203Pittsburgh, PA 15241 (412) 831‑8300
Group practices
Medicare enrollment lists Gretchen M. Kreizenbeck as a member of this group (CMS data updated October 2, 2026).
- David a Horvath MD PC6 clinicians in the group
Specialties
- Dermatologyprimary
Other dermatologists in Pittsburgh
Clinicians with the same Medicare primary specialty in Pittsburgh, PA — not a recommendation.
Other clinicians in David a Horvath MD PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Yale University School Of Medicine |
| Graduation year | 2007 (19 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1770761777 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- 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