JOHN MASEK (CRNA) – Certified Registered Nurse Anesthetist, NPI 1740206705
Certified Registered Nurse Anesthetist
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
4,245 CERTIFIED REGISTERED NURSE ANESTHETIST (CRNA) in PA
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Provider Addresses for JOHN MASEK (CRNA)
408 DENFORD WAY
DOWNINGTOWN, PA 193353140
Phone: (610) 518-3397
Type: Mailing
800, Spruce Street, Society Hill, Philadelphia, Philadelphia County, Pennsylvania, 19109, United States
PHILADELPHIA, PA 191076130
Phone: (215) 829-5664
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 2 Open Payments records for all available years, with a total value of $149.
Total Amount is formed as General ($149) + Research ($0) + Ownership ($0) = $149.
Last reported payment date: 2024-09-18 • Largest payer in this snapshot: Biosense Webster, Inc. ($117).
Total Amount
$149
General + Research + Ownership
Payments
2
Total payment records
General Amount
$149
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-09-18
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Biosense Webster, Inc. | $117 |
| Medtronic, Inc. | $31 |
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: 2005-06-28
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 |
|---|---|---|---|---|
| I20050628000843 | I | Certified Registered Nurse Anesthetist (Crna) | PA | 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 |
|---|---|---|---|---|
| 00142 | Anesthesia for lens surgery | 21 | 21 | $0 |
| 00731 | Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 17 | 17 | $0 |
| 00811 | Anesthesia for other procedure on large bowel using an endoscope | 17 | 17 | $0 |
| 00560 | Anesthesia for procedure on heart and large blood vessels | 11 | 11 | $0 |
| 36620 | Insertion of artery tube for blood sampling or infusion through skin | 11 | 11 | $0 |
Insurance plans in this area (ZIP 19335)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| CERTIFIED REGISTERED NURSE ANESTHET | PA | 00142 | Anesthesia for lens surgery | 20 | 20 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | PA | |
| - | PA | |
| P O D I A T R Y | NY | |
| - | DE | |
| A N E S T H E S I O L O G Y | PA | |
| Physician Assistant | NJ | |
| Physician Assistant | PA | |
| N E U R O L O G Y | MD | |
| Certified Registered Nurse Anesthetist (Crna) | PA | |
| Family Practice | PA |
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