Doctor profile · Federal record
Dr. John Mason, M.D.
Surgery Physician (CMS: General Surgery) · Chesterfield, MO
- NPI 1275528580
- Accepts Medicare
- MIPS 75.0 / 100 · 2023
- 33 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
226 S Woods Mill RD, Suite 49 W
Chesterfield, MO 630173662
(314) 434-1211
fax (314) 434-4419
Credentials & registration
- NPI registered
- September 2005 — 21 yrs on file
- Profile last updated
- February 26, 2018
- Year of graduation
- 1993 — 33 yrs since
- Specialty taxonomy
- 208600000X — NUCC code
- State license (1)
- Missouri #104004
- Medicaid
- MO #205802101
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1275528580. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
310
Distinct HCPCS
7
Medicare allowed
$49,126
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 74 | 70 | $127 | |
99202 |
New patient office or other outpatient visit, 15-29 minutes | 56 | 56 | $70 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 54 | 44 | $55 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 45 | 30 | $78 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 37 | 37 | $163 | |
49650 |
Repair of groin hernia using an endoscope | 25 | 25 | $450 | |
47562 |
Removal of gallbladder using an endoscope | 19 | 19 | $633 |
In context: peer comparison
Among 2 peers in Chesterfield Surgery Physician, average services per provider: 35. This provider delivers 8.9× the peer median.Open Payments
Industry payments received
All-time total
$904
Transactions
18
Manufacturers
8
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Intuitive Surgical, INC. | 9 | $262.36 | |
| W. L. Gore & Associates, INC. | 3 | $206.34 | |
| Davol INC. | 1 | $149.37 | |
| Conmed Corporation | 1 | $131.23 | |
| Endologix LLC | 1 | $70.34 | |
| PolyNovo North America LLC | 1 | $44.44 | |
| Hologic Sales and Service, LLC | 1 | $20.13 | |
| Medtronic, INC. | 1 | $19.96 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
13
Patients
13
Total drug cost
$50
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 13 | 13 | $50 |
Frequently asked questions
What is Dr. John Mason's medical specialty?
Dr. John Mason practices Surgery Physician in Chesterfield, MO.
Where does Dr. John Mason practice?
Dr. John Mason practices at 226 S Woods Mill RD, Chesterfield, MO 630173662. Office phone: 3144341211.
What is Dr. John Mason's NPI?
Dr. John Mason's National Provider Identifier (NPI) is 1275528580, issued by NPPES.
Does Dr. John Mason accept Medicare assignment?
Yes. Dr. John Mason accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Mason commonly perform?
Top Medicare-reported procedures in 2023: Initial hospital care with straightforward or low-level medical decision making (HCPCS 99222); New patient office or other outpatient visit (HCPCS 99202); Established patient office or other outpatient visit (HCPCS 99212). Source: CMS Medicare Physician & Other Practitioners file.