Doctor profile · Federal record
Dr. Michael Johnson, MD
Gastroenterology Physician (CMS: Gastroenterology) · Specialist · Little Rock, AR
- NPI 1134123813
- Accepts Medicare
- MIPS 79.9 / 100 · 2023
- 42 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
409 N University Ave
Little Rock, AR 722053108
(501) 664-6980
fax (501) 664-4738
Credentials & registration
- NPI registered
- June 2005 — 21 yrs on file
- Profile last updated
- December 12, 2016
- Year of graduation
- 1984 — 42 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Arkansas #N7853
- Medicaid
- AR #117492001
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1134123813. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
9,449
Distinct HCPCS
10
Medicare allowed
$327,200
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J3380 |
Injection, vedolizumab, 1 mg | 7,500 | 11 | $22 | |
99439 |
Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month | 442 | 38 | $43 | |
99490 |
Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | 257 | 38 | $57 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 199 | 167 | $81 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 180 | 139 | $115 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 106 | 105 | $226 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 101 | 101 | $149 | |
99454 |
Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days | 89 | 17 | $42 | |
99457 |
Management using the results of remote vital sign monitoring per calendar month, first 20 minutes | 82 | 16 | $43 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 63 | 63 | $128 |
In context: peer comparison
Among 23 peers in Little Rock Gastroenterology Physician, average services per provider: 206. This provider delivers 46× the peer median.Open Payments
Industry payments received
All-time total
$3,706
Transactions
187
Manufacturers
14
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 74 | $1,293.52 | |
| Janssen Biotech, INC. | 29 | $723.51 | |
| Takeda Pharmaceuticals U.S.A., INC. | 26 | $402.05 | |
| Phathom Pharmaceuticals, INC. | 12 | $335.12 | |
| Aimmune Therapeutics, INC. | 9 | $260.62 | |
| Lilly USA, LLC | 6 | $184.02 | |
| Merck Sharp & Dohme LLC | 9 | $165.97 | |
| Gilead Sciences, INC. | 6 | $108.74 | |
| Ironwood Pharmaceuticals, INC | 6 | $86.05 | |
| Pfizer INC. | 4 | $58.20 | |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | 3 | $44.16 | |
| Genzyme Corporation | 1 | $15.83 | |
| Braintree Laboratories, INC. | 1 | $14.49 | |
| Evoke Pharma, INC. | 1 | $13.85 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
837
Patients
243
Total drug cost
$57,118
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 396 | 92 | $5,014 |
| Famotidine | Generic | 71 | 18 | $1,852 |
| Clenpiq (Sod Picosulf/Mag Ox/Citric Ac) | Brand | 61 | 61 | $10,548 |
| Pantoprazole Sodium | Generic | 56 | 18 | $790 |
| Colestipol Hcl | Generic | 47 | 16 | $4,759 |
| Mesalamine ER (Mesalamine) | Brand | 27 | 0 | $11,315 |
| Esomeprazole Magnesium | Generic | 26 | 0 | $780 |
| Sucralfate | Generic | 26 | 12 | $848 |
| Mercaptopurine | Generic | 24 | 0 | $1,399 |
| Linzess (Linaclotide) | Brand | 23 | 0 | $12,793 |
Frequently asked questions
What is Dr. Michael Johnson's medical specialty?
Dr. Michael Johnson practices Gastroenterology Physician in Little Rock, AR.
Where does Dr. Michael Johnson practice?
Dr. Michael Johnson practices at 409 N University Ave, Little Rock, AR 722053108. Office phone: 5016646980.
What is Dr. Michael Johnson's NPI?
Dr. Michael Johnson's National Provider Identifier (NPI) is 1134123813, issued by NPPES.
Does Dr. Michael Johnson accept Medicare assignment?
Yes. Dr. Michael Johnson accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Michael Johnson commonly perform?
Top Medicare-reported procedures in 2023: Injection, vedolizumab, 1 mg (HCPCS J3380); Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month (HCPCS 99439); Chronic care management services (HCPCS 99490). Source: CMS Medicare Physician & Other Practitioners file.