Quick answers
- Does Warren H. Zager accept Medicare assignment?
- Yes. Medicare's clinician data says Warren H. Zager 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 Warren H. Zager see?
- In 2024, CMS data shows 556 Original Medicare patients and 2,262 services for Warren H. Zager. This counts Original Medicare only and measures volume, not quality.
- What is Warren H. Zager's NPI number?
- 1316900897. 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 Warren H. Zager, 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 | 556 |
|---|---|
| Services billed to Medicare | 2,262 |
| Different services or procedures | 28 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)438 services
- Test for allergy using allergenic extract (95004)362 services
- Diagnostic exam of nasal passages using an endoscope (31231)350 services
- Test for allergy using allergenic extract injected into skin (95024)342 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)209 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 cholesterol75%
- High blood pressure71%
- Arthritis54%
- Anxiety31%
- Ischemic heart disease29%
- Osteoporosis26%
Hospitals where Warren H. Zager works
Medicare's Facility Affiliation Data lists Warren H. Zager 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.
- Jefferson Einstein Montgomery HospitalEast Norriton, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390329
- Jefferson Einstein Philadelphia HospitalPhiladelphia, PA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 390142
Practice locations
Addresses where Warren H. Zager is enrolled with Medicare (CMS data updated October 2, 2026).
- 1777 Sentry Pkwy W, Veva 11 Suite 100Blue Bell, PA 19422 (610) 275‑6153
- 2000 Westinghouse Dr, Suite 200Cranberry Twp, PA 16066
- 909 Sumneytown Pike, Suite 103Spring House, PA 19477 (215) 646‑2118
Group practices
Medicare enrollment lists Warren H. Zager as a member of these groups (CMS data updated October 2, 2026).
- Phoenix Rehabilitation and Health Services Inc2,800 clinicians in the group
- Pinnacle Ent Alliance LLC69 clinicians in the group
Specialties
- Otolaryngologyprimary
Other ENT doctors in Pennsylvania
Clinicians with the same Medicare primary specialty in Pennsylvania — not a recommendation.
Other clinicians in Phoenix Rehabilitation and Health Services Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Miami, Lm Miller School Of Medicine |
| Graduation year | 1997 (29 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1316900897 |
| 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