Quick answers
- Does Diane Z. Holstein accept Medicare assignment?
- Yes. Medicare's clinician data says Diane Z. Holstein 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.
- How many Medicare patients does Diane Z. Holstein see?
- In 2024, CMS data shows 208 Original Medicare patients and 404 services for Diane Z. Holstein. This counts Original Medicare only and measures volume, not quality.
- What is Diane Z. Holstein's NPI number?
- 1770675589. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Diane Z. Holstein, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 208 |
|---|---|
| Services billed to Medicare | 404 |
| Different services or procedures | 3 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Comprehensive hearing and speech recognition test (92557)215 services
- Test to assess middle ear function (92567)188 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol73%
- High blood pressure62%
- Arthritis41%
- Osteoporosis25%
- Ischemic heart disease24%
- Depression22%
Hospitals where Diane Z. Holstein works
Medicare's Facility Affiliation Data lists Diane Z. Holstein 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.
- Pennsylvania HospitalPhiladelphia, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390226
Practice locations
Addresses where Diane Z. Holstein is enrolled with Medicare (CMS data updated October 2, 2026).
- 3400 Spruce StPhiladelphia, PA 19104 (215) 662‑2777
Group practices
Medicare enrollment lists Diane Z. Holstein as a member of this group (CMS data updated October 2, 2026).
- University of Penn - Medical Group3,505 clinicians in the group
Specialties
- Qualified Audiologistprimary
Find other clinicians: Qualified Audiologist, Pennsylvania →
Other audiologists in Philadelphia
Clinicians with the same Medicare primary specialty in Philadelphia, PA — not a recommendation.
Other clinicians in University of Penn - Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | AU |
|---|---|
| Graduation year | 2011 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1770675589 |
| 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
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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