Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. ALONZO D. WILLIAMS SR. M.D.
NPI 1326018581
Internal Medicine - Gastroenterology in Little Rock, AR

Q: What is Alonzo Williams's NPI number?

The NPI number for Alonzo Williams is 1326018581. It was assigned to this individual provider in the NPPES registry on January 23, 2006.

Q: What is Alonzo Williams's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Q: When was this NPI record last updated?

The NPPES record for Alonzo Williams was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since January 23, 2006

100/100

CMS Quality Rating

8908 KANIS RD, LITTLE ROCK, AR 72205(501) 227-7688(501) 225-2930 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

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About Dr. Alonzo D. Williams Sr. M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. ALONZO D. WILLIAMS SR. M.D. (NPI 1326018581) is an individual gastroenterology provider in Little Rock, Arkansas, licensed in Arkansas (C5546) and active in the NPI registry since January 2006.

NPPES Registry Identity

NPI1326018581

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameDR. ALONZO D. WILLIAMS SR.Credential: M.D.

Location Address8908 KANIS RDLittle Rock, AR 72205-6414

Mailing AddressPo Box 55130Little Rock, AR 72215-5130 · (501) 227-7688 · Fax (501) 225-2930

Phone(501) 227-7688

Fax(501) 225-2930

Sole ProprietorNo

Enumeration DateJanuary 23, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1326018581 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in AR · C5546

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

8908 KANIS RD, Little Rock, AR 72205

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Areas of Expertise CMS Part B claims 22

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

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 99439

Chronic Care Management services involve regular check-ins with healthcare professionals to manage two or more chronic conditions. It includes an additional 20 minutes of clinical staff time per month, directed by a healthcare professional, to ensure optimal health management.

925 services143 patients

Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month 99490

Chronic care management services involve a healthcare professional directing clinical staff in managing your chronic conditions. This includes the first 20 minutes per month of services like medication management, care coordination, and health monitoring to help improve your health and quality of life.

534 services144 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

274 services224 patients

Complete ultrasound scan of abdomen 76700

A complete ultrasound scan of the abdomen is a non-invasive imaging procedure. It uses sound waves to produce images of the organs in your abdomen, such as the liver, gallbladder, spleen, pancreas, and kidneys. It helps in diagnosing, monitoring, and planning treatments.

163 services159 patients

Dilation of esophagus 43450

Dilation of the esophagus is a procedure aimed to stretch or open up your esophagus (the tube connecting your mouth to your stomach) when it's narrow. It helps to improve swallowing and alleviate discomfort. It's typically performed using a flexible tube or balloon, under sedation.

143 services129 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

127 services121 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

122 services101 patients

Dilation of esophagus 43450

118 services112 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

110 services110 patients

Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days 99454

This service involves using devices to remotely track body functions like heart rate or blood pressure. These devices, provided initially, record data daily or send alerts if readings are abnormal. The service is renewed every 30 days.

51 services14 patients

Biopsy of large bowel using a flexible endoscope 45380

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

47 services47 patients

Management using the results of remote vital sign monitoring per calendar month, first 20 minutes 99457

This service involves reviewing and managing your health data, which is remotely monitored and collected. Your vital signs like heart rate and blood pressure are tracked regularly throughout the month. The first 20 minutes of this data analysis per month is included in this service.

44 services14 patients

Biopsy of large bowel using a flexible endoscope 45380

33 services33 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

30 services30 patients

Measurement of liver stiffness 91200

Measurement of liver stiffness is a non-invasive procedure that helps assess the health of your liver. It uses sound waves to detect the hardness of the liver tissue, which can indicate conditions like fibrosis or cirrhosis. It's a simple, painless test that provides valuable information about your liver's health.

26 services26 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

26 services26 patients

Complete ultrasound of abdomen and pelvis artery and vein blood flow 93975

This procedure uses sound waves to create images of your abdomen and pelvis, specifically focusing on the arteries and veins. It helps in assessing the blood flow and detecting any abnormalities, ensuring your overall well-being.

25 services24 patients

Destruction of polyp or growth of large bowel using a flexible endoscope 45388

This procedure involves the removal of a polyp or growth in the large bowel. A flexible endoscope, a thin tube with a camera, is inserted through the rectum to visualize and remove the growth. This helps maintain bowel health and prevent complications.

22 services22 patients

Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43235

This procedure, known as an upper endoscopy, involves inserting a thin, flexible tube with a camera down the throat to examine the esophagus, stomach, and upper small bowel. It helps diagnose conditions like ulcers or inflammation.

21 services19 patients

Removal of polyps or growths of large bowel using a flexible endoscope with electrical cautery 45384

This procedure involves using a flexible tube with a camera, called an endoscope, to view the large intestine. If any abnormal growths or polyps are found, they are removed with an electrically-heated instrument. This is a common way to prevent bowel issues.

19 services19 patients

Destruction of polyp or growth of large bowel using a flexible endoscope 45388

17 services17 patients

Removal of polyps or growths of large bowel using a flexible endoscope with electrical cautery 45384

15 services15 patients

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

100/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

94.82

Promoting Interoperability

100

Improvement Activities

Leave this field empty

Other Providers at the Same Location NPPES 11

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ARKANSAS DIAGNOSTIC CENTER, PA

Specialist

8908 KANIS RD
LITTLE ROCK, AR 72205

Pulaski County (501) 227-7688

DR. LUBNA MARUF M.D.

Internal Medicine

8908 KANIS RD
LITTLE ROCK, AR 72205

Pulaski County (501) 227-7688

DIGESTIVE PARTNERS OF ARKANSAS PLLC

Internal Medicine (Gastroenterology)

8908 KANIS RD
LITTLE ROCK, AR 72205

Pulaski County (501) 599-4887

KANIS ANESTHESIA LLC

Anesthesiology

8908 KANIS RD
LITTLE ROCK, AR 72205

Pulaski County (501) 227-7688

D & D PHARMACY LLC

Pharmacy (Community/Retail Pharmacy)

8908 KANIS RD, SUITE 350
LITTLE ROCK, AR 72205

Pulaski County (501) 801-8072

DR. BRIAN L. MCGEE MD

Internal Medicine (Gastroenterology)

8908 KANIS RD
LITTLE ROCK, AR 72205

Pulaski County (501) 599-4887

ADC ANESTHESIA SERVICES, P.L.C.

Specialist

8908 KANIS RD
LITTLE ROCK, AR 72205

Pulaski County (501) 227-7688

ARKANSAS ANESTHESIA NETWORK SERVICES LLC

Anesthesiology

8908 KANIS RD
LITTLE ROCK, AR 72205

Pulaski County (501) 227-7688

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Alonzo Williams's NPI number?

The NPI number for Alonzo Williams is 1326018581. It was assigned to this individual provider in the NPPES registry on January 23, 2006.

Where is Alonzo Williams located?

Alonzo Williams practices at 8908 Kanis Rd, Little Rock, AR 72205. The listed phone number is (501) 227-7688.

What is Alonzo Williams's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

When was this NPI record last updated?

The NPPES record for Alonzo Williams was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.