DR. JOHN EDWARD MASON (M.D.) – Surgery Physician, NPI 1275528580
Surgery Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
785 GENERAL SURGERY in MO
Loading map...
Provider Addresses for DR. JOHN EDWARD MASON (M.D.)
226, South Woods Mill Road, Chesterfield, Saint Louis County, Missouri, 63017, United States
SUITE 49 W
CHESTERFIELD, MO 630173662
Phone: (314) 434-1211
Fax: (314) 434-4419
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
Open Payments (CMS)
CMS reports 37 Open Payments records for all available years, with a total value of $1,673.
Total Amount is formed as General ($1,673) + Research ($0) + Ownership ($0) = $1,673.
Last reported payment date: 2024-12-24 • Largest payer in this snapshot: Intuitive Surgical, Inc. ($787).
Total Amount
$1,673
General + Research + Ownership
Payments
37
Total payment records
General Amount
$1,673
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-24
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Intuitive Surgical, Inc. | $787 |
| Davol Inc. | $269 |
| W. L. Gore & Associates, Inc. | $233 |
| CONMED Corporation | $131 |
| Endologix LLC | $70 |
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: 2010-07-16
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 |
|---|---|---|---|---|
| I20100716000103 | I | General Surgery | MO | 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 |
|---|---|---|---|---|
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 74 | 70 | $0 |
| 99202 | New patient office or other outpatient visit, 15-29 minutes | 56 | 56 | $0 |
| 99212 | Established patient office or other outpatient visit, 10-19 minutes | 54 | 44 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 45 | 30 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 37 | 37 | $0 |
Insurance plans in this area (ZIP 63017)
Loading plans...
Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| GENERAL SURGERY | MO | 93922 | Ultrasound study of arteries of both arms and legs | 32 | 32 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| General Surgery | MO | |
| Nurse Practitioner | MO | |
| General Surgery | MO | |
| Physician Assistant | IL | |
| Orthopedic Surgery | GA | |
| Orthopedic Surgery | MO | |
| General Surgery | NC | |
| Nurse Practitioner | MO | |
| General Surgery, Vascular Surgery | MO | |
| Orthopedic Surgery | MO |
Reviews
All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.
No reviews yet. Be the first to share your experience — your opinion helps families compare providers.