MARK ZAHNISER (MD) – Critical Care Medicine (Anesthesiology) Physician, NPI 1396738548
Critical Care Medicine (Anesthesiology) Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
2,268 ANESTHESIOLOGY in OH
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Provider Addresses for MARK ZAHNISER (MD)
University Hospitals Cleveland Medical Center, 11100, Euclid Avenue, University Circle, Cleveland, Cuyahoga County, Ohio, 44106, United States
CLEVELAND, OH 44106
Phone: (216) 844-7330
Fax: (216) 844-3781
Type: Location
24701, Euclid Avenue, Euclid, Cuyahoga County, Ohio, 44117, United States
3RD FLOOR
EUCLID, OH 441171714
Phone: (216) 383-6616
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $23.
Total Amount is formed as General ($23) + Research ($0) + Ownership ($0) = $23.
Last reported payment date: 2024-10-23 • Largest payer in this snapshot: ABIOMED ($23).
Total Amount
$23
General + Research + Ownership
Payments
1
Total payment records
General Amount
$23
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-23
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABIOMED | $23 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2025-03-25
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20250325001970 | I | Anesthesiology | OR | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 69 | 40 | $0 |
| 99291 | Critical care, first 30-74 minutes | 54 | 31 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 19 | 14 | $0 |
Insurance plans in this area (ZIP 44106)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Anesthesiology, Critical Care (Intensivists) | OR | |
| Certified Registered Nurse Anesthetist (Crna) | WI | |
| A N E S T H E S I O L O G Y | OR | |
| Certified Registered Nurse Anesthetist (Crna) | IN | |
| Certified Registered Nurse Anesthetist (Crna) | OR | |
| A N E S T H E S I O L O G Y | WA | |
| Certified Registered Nurse Anesthetist (Crna) | OR | |
| A N E S T H E S I O L O G Y | CA | |
| A N E S T H E S I O L O G Y | KY | |
| Certified Registered Nurse Anesthetist (Crna) | WA |
Reviews
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