Doctor profile · Federal record
Dr. Thomas Johnson, M.D.
Gastroenterology Physician · Nevada, IA
- NPI 1639168685
- 21 yrs on file
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1102 Dakota CT
Nevada, IA 502017966
(515) 296-2041
Credentials & registration
- NPI registered
- October 2005 — 21 yrs on file
- Profile last updated
- August 7, 2025
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Iowa #27083
- Medicaid
- IA #0055798
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1639168685. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
2,104
Distinct HCPCS
10
Medicare allowed
$161,968
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
G0500 |
Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito | 630 | 598 | $5 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 225 | 225 | $233 | |
36415 |
Insertion of needle into vein for collection of blood sample | 168 | 94 | $8 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 128 | 128 | $171 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 117 | 101 | $84 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 80 | 75 | $123 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 75 | 42 | $75 | |
43235 |
Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 73 | 69 | $97 | |
85025 |
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | 71 | 47 | $8 | |
G0121 |
Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | 57 | 57 | $171 |
In context: peer comparison
Among 1 peers in Nevada Gastroenterology Physician, average services per provider: 84. This provider delivers 25× the peer median.Open Payments
Industry payments received
All-time total
$25
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| ShockWave Medical, INC | 1 | $25.37 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,599
Patients
718
Total drug cost
$169,228
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,Mag Sulfates) | Brand | 334 | 324 | $27,951 |
| Omeprazole | Generic | 191 | 48 | $2,003 |
| Balsalazide Disodium | Generic | 143 | 27 | $31,099 |
| Budesonide Dr (Budesonide) | Brand | 141 | 25 | $16,117 |
| Colestipol Hcl | Generic | 140 | 35 | $10,161 |
| Azathioprine | Generic | 100 | 19 | $9,935 |
| Clenpiq (Sod Picosulf/Mag Ox/Citric Ac) | Brand | 99 | 99 | $17,654 |
| Ursodiol | Generic | 96 | 15 | $18,532 |
| Pantoprazole Sodium | Generic | 90 | 21 | $1,060 |
| Gavilyte-G (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 66 | 66 | $1,236 |
Frequently asked questions
What is Dr. Thomas Johnson's medical specialty?
Dr. Thomas Johnson practices Gastroenterology Physician in Nevada, IA.
Where does Dr. Thomas Johnson practice?
Dr. Thomas Johnson practices at 1102 Dakota CT, Nevada, IA 502017966. Office phone: 5152962041.
What is Dr. Thomas Johnson's NPI?
Dr. Thomas Johnson's National Provider Identifier (NPI) is 1639168685, issued by NPPES.
What procedures does Dr. Thomas Johnson commonly perform?
Top Medicare-reported procedures in 2023: Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito (HCPCS G0500); Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385); Insertion of needle into vein for collection of blood sample (HCPCS 36415). Source: CMS Medicare Physician & Other Practitioners file.