Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Gastroenterology

Ali H. Zakaria, MD

Works at hospitals in Custer, SD · Rapid City, SD · Spearfish, SD … · South Dakota

Summary

Dr. Ali H. Zakaria, MD is a gastroenterologist at 353 Fairmont Blvd, Rapid City, SD 57701. May accept Medicare assignment. In 2024, Ali H. Zakaria had 353 Original Medicare patients and 1,158 services. NPI 1144604661. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Ali H. Zakaria, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Ali H. Zakaria accept Medicare assignment?
Medicare's clinician data says Ali H. Zakaria may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
How many Medicare patients does Ali H. Zakaria see?
In 2024, CMS data shows 353 Original Medicare patients and 1,158 services for Ali H. Zakaria. This counts Original Medicare only and measures volume, not quality.
What is Ali H. Zakaria's NPI number?
1144604661. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Ali H. Zakaria, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients353
Services billed to Medicare1,158
Different services or procedures68
Participating Medicare providerYes
Average age of these patients72

Most frequent services

  1. Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)177 services
  2. Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)124 services
  3. Review by radiologist of image from tube placement into bile duct using an endoscope (74328)74 services
  4. Exam of common bile and/or pancreatic duct using a flexible endoscope (43273)68 services
  5. Removal of stone or debris from bile or pancreatic duct using a flexible endoscope (43264)64 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol70%
  • Arthritis44%
  • Diabetes34%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)27%
  • Depression26%

Hospitals where Ali H. Zakaria works

Medicare's Facility Affiliation Data lists Ali H. Zakaria at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Ali H. Zakaria is enrolled with Medicare (CMS data updated October 2, 2026).

Specialties

Find other Gastroenterology doctors in South Dakota →

Other gastroenterologists in Rapid City

Clinicians with the same Medicare primary specialty in Rapid City, SD — not a recommendation.

All gastroenterologists in Rapid City →

Clinician information

CredentialMD
Graduation year2010 (16 years since medical school)
Gender (as listed)Male
Medicare assignmentMay accept for some services
NPI (National Provider Identifier)1144604661
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians