Internal Medicine, Gastroenterology · Little Rock, AR
NPI
1326018581
Since 2006
Specialty
Internal Medicine, Gastroenterology
Code 207RG0100X
Group practices
0
Medicare group memberships
Hospitals
0
Hospital affiliations
8908 Kanis Rd
Little Rock, AR, 72205
Phone (501) 227-7688
Medicare paid, 2024
$212K
2,956 services
Medicare patients, 2024
432
Average age 69
Drug cost, 2024
$351K
4,181 prescriptions
Company payments, 2025
$0
From 1 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Alonzo D Williams Sr. was code 99439 (chronic, principal, and transitional care management), 925 times for 143 patients. In total Alonzo D Williams Sr. billed 2,956 services in 31 codes, and Medicare paid $212K.
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2026-07-13.
| Code |
|---|
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 99439 Chronic, Principal, and Transitional Care Management | Office | 925 | 143 | $35.73 | $33K |
| 99490 Chronic, Principal, and Transitional Care Management | Office | 534 | 144 | $40.46 | $22K |
| 99213 Office E&M - Established | Office | 274 | 224 | $63.18 | $17K |
| 76700 Ultrasound - Abdomen and Pelvis | Office | 163 | 159 | $80.01 | $13K |
| 43450 Digestive/Gastrointestinal | Office | 143 | 129 | $68.84 | $9,844 |
| 43239 Upper GI Endoscopy | Office | 127 | 121 | $268.52 | $34K |
| 99214 Office E&M - Established | Office | 122 | 101 | $89.53 | $11K |
| 43450 Digestive/Gastrointestinal | Facility | 118 | 112 | $28.19 | $3,327 |
| 43239 Upper GI Endoscopy | Facility | 110 | 110 | $86.55 | $9,520 |
| 99454 E&M - Miscellaneous | Office | 51 | 14 | $33.72 | $1,720 |
| 45380 Lower GI Endoscopy - Other | Facility | 47 | 47 | $135.13 | $6,351 |
| 99457 E&M - Miscellaneous | Office | 44 | 14 | $37.01 | $1,629 |
| 45380 Lower GI Endoscopy - Other | Office | 33 | 33 | $260.33 | $8,591 |
| 99203 Office E&M - New | Office | 30 | 30 | $70.43 | $2,113 |
| 99212 Office E&M - Established | Office | 26 | 26 | $41.25 | $1,073 |
By year: 2022 $437K for 7,980 services; 2023 $364K for 6,279 services; 2024 $212K for 2,956 services.
Medicare prescription drug claims, 2024
In 2024, the drug Alonzo D Williams Sr. prescribed most often to Medicare patients was Omeprazole, with 2,087 prescriptions and refills. In total Alonzo D Williams Sr. wrote 4,181 Medicare prescriptions that cost $351K.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Omeprazole Generic | 2,087 | 3,053 | 643 | $42K |
| Famotidine Generic | 486 | 782 | 133 | $9,662 |
| Pantoprazole Sodium Generic | 343 | 474 | 104 | $3,594 |
| Dicyclomine Hcl Generic | 214 | 253 | 90 | $4,173 |
| Promethazine Hcl Generic | 195 | 199 | 64 | $3,724 |
| Linzess Linaclotide | 97 | 138 | 25 | $74K |
| Metoclopramide Hcl Generic | 80 | 83 | 22 | $487 |
| Ondansetron Hcl Generic | 67 | 69 | 29 | $1,905 |
| Hydrocortisone Generic | 54 | 55 | 38 | $770 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 41 | 41 | 17 | $810 |
| Procto-Med Hc Hydrocortisone | 39 | 43 | 22 | $740 |
| Dexlansoprazole Dr Dexlansoprazole | 39 | 47 | Under 11 | $9,250 |
| Megestrol Acetate Generic | 35 | 42 | 18 | $1,884 |
| Lubiprostone Generic | 34 | 51 | 11 | $2,709 |
| Sucralfate Generic | 33 | 52 | 12 | $6,726 |
Brand drugs: - claims; generic drugs: 3,984 claims; opioid claims: 42.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Alonzo D Williams Sr. $0 (- in general payments such as food, travel and fees) from 1 company.
Official US government data on Original Medicare services, Medicare prescription drug plans and the payments drug and device companies must report. Services with fewer than 11 patients and drugs with fewer than 11 claims are not published. Procedure codes are shown by number with their public category.