Doctor profile · Federal record
Dr. Michael Williams, MD
Gastroenterology Physician (CMS: Gastroenterology) · Columbia, MO
- NPI 1750334470
- Accepts Medicare
- MIPS 75.0 / 100 · 2023
- 23 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
210 Portland St Ste 100
Columbia, MO 652016677
(573) 777-8818
fax (573) 777-8819
Credentials & registration
- NPI registered
- May 2006 — 20 yrs on file
- Profile last updated
- October 6, 2022
- Year of graduation
- 2003 — 23 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Missouri #2017008968
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1750334470. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
22,771
Distinct HCPCS
10
Medicare allowed
$627,389
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J3380 |
Injection, vedolizumab, 1 mg | 20,400 | 12 | $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 | 492 | 47 | $43 | |
88305 |
Pathology examination of tissue using a microscope, intermediate complexity | 489 | 212 | $30 | |
99490 |
Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | 295 | 47 | $58 | |
88313 |
Special stained specimen slides to examine tissue including interpretation and report | 193 | 80 | $59 | |
88312 |
Special stained specimen slides to identify organisms including interpretation and report | 152 | 78 | $73 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 147 | 144 | $233 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 142 | 134 | $90 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 136 | 133 | $89 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 113 | 86 | $117 |
In context: peer comparison
Among 16 peers in Columbia Gastroenterology Physician, average services per provider: 200. This provider delivers 114× the peer median.Open Payments
Industry payments received
All-time total
$40,124
Transactions
180
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Phathom Pharmaceuticals, INC. | 55 | $37,651.21 | |
| Abbvie INC. | 27 | $546.74 | |
| Janssen Biotech, INC. | 17 | $297.11 | |
| Takeda Pharmaceuticals U.S.A., INC. | 16 | $272.43 | |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | 16 | $253.69 | |
| Pfizer INC. | 11 | $182.35 | |
| Regeneron Healthcare Solutions, INC. | 7 | $154.72 | |
| Celgene Corporation | 6 | $123.31 | |
| Aimmune Therapeutics, INC. | 7 | $120.47 | |
| Lilly USA, LLC | 4 | $81.01 | |
| Alkermes, INC. | 3 | $69.89 | |
| Intercept Pharmaceuticals, INC. | 4 | $64.50 | |
| Ironwood Pharmaceuticals, INC | 3 | $56.96 | |
| Mauna Kea Technologies, INC. | 2 | $49.64 | |
| Genzyme Corporation | 2 | $44.17 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
675
Patients
150
Total drug cost
$145,365
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 327 | 104 | $4,392 |
| Pantoprazole Sodium | Generic | 79 | 25 | $1,312 |
| Dicyclomine Hcl | Generic | 58 | 21 | $2,028 |
| Esomeprazole Magnesium | Generic | 37 | 0 | $976 |
| Mesalamine | Generic | 25 | 0 | $10,758 |
| Linzess (Linaclotide) | Brand | 20 | 0 | $10,321 |
| Budesonide Dr (Budesonide) | Brand | 16 | 0 | $1,287 |
| Famotidine | Generic | 16 | 0 | $104 |
| Ondansetron Hcl | Generic | 16 | 0 | $1,301 |
| Sucralfate | Generic | 16 | 0 | $514 |
Hospital affiliations
Frequently asked questions
What is Dr. Michael Williams's medical specialty?
Dr. Michael Williams practices Gastroenterology Physician in Columbia, MO.
Where does Dr. Michael Williams practice?
Dr. Michael Williams practices at 210 Portland St Ste 100, Columbia, MO 652016677. Office phone: 5737778818.
What is Dr. Michael Williams's NPI?
Dr. Michael Williams's National Provider Identifier (NPI) is 1750334470, issued by NPPES.
Does Dr. Michael Williams accept Medicare assignment?
Yes. Dr. Michael Williams accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Michael Williams 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); Pathology examination of tissue using a microscope, intermediate complexity (HCPCS 88305). Source: CMS Medicare Physician & Other Practitioners file.