Quick answers
- Does Zafar I. Sheikh accept Medicare assignment?
- Yes. Medicare's clinician data says Zafar I. Sheikh accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Zafar I. Sheikh see?
- In 2024, CMS data shows 158 Original Medicare patients and 561 services for Zafar I. Sheikh. This counts Original Medicare only and measures volume, not quality.
- What is Zafar I. Sheikh's NPI number?
- 1821000886. 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 Zafar I. Sheikh, 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 patients | 158 |
|---|---|
| Services billed to Medicare | 561 |
| Different services or procedures | 18 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)203 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)165 services
- Urinalysis, manual test (81002)53 services
- Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional (99211)20 services
- Insertion of needle into vein for collection of blood sample (36415)17 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 cholesterol75%
- Arthritis44%
- Diabetes36%
- Ischemic heart disease27%
- Chronic kidney disease24%
Practice locations
Addresses where Zafar I. Sheikh is enrolled with Medicare (CMS data updated October 2, 2026).
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Madera
Clinicians with the same Medicare primary specialty in Madera, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1974 (52 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1821000886 |
| Corrections | Report 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
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians