Quick answers
- Does Mehrdad Zarrinmakan accept Medicare assignment?
- Yes. Medicare's clinician data says Mehrdad Zarrinmakan 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 Mehrdad Zarrinmakan see?
- In 2024, CMS data shows 341 Original Medicare patients and 1,927 services for Mehrdad Zarrinmakan. This counts Original Medicare only and measures volume, not quality.
- What is Mehrdad Zarrinmakan's NPI number?
- 1043208309. 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 Mehrdad Zarrinmakan, 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 | 341 |
|---|---|
| Services billed to Medicare | 1,927 |
| Different services or procedures | 19 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)299 services
- Ultrasound study of arm or leg veins with compression and maneuvers (93970)298 services
- Ultrasound study of one arm or leg veins with compression and maneuvers (93971)278 services
- Laser destruction of incompetent vein of arm or leg using imaging guidance (36478)235 services
- Ultrasound of both sides of head and neck blood flow (93880)138 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 cholesterol75%
- High blood pressure74%
- Arthritis59%
- Ischemic heart disease31%
- Anxiety29%
- Chronic kidney disease29%
Hospitals where Mehrdad Zarrinmakan works
Medicare's Facility Affiliation Data lists Mehrdad Zarrinmakan 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.
- MH St Joseph Warren HospitalWarren, OH · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 360161
Practice locations
Addresses where Mehrdad Zarrinmakan is enrolled with Medicare (CMS data updated October 2, 2026).
- 4139 Boardman Canfield RdCanfield, OH 44406 (330) 856‑4366
- 701 N Hermitage Rd, Suite 3Hermitage, PA 16148 (330) 856‑4366
- 8952 E Market StWarren, OH 44484
Specialties
- General Surgeryprimary
- Thoracic Surgeryalso
Other general surgeons in Ohio
Clinicians with the same Medicare primary specialty in Ohio — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1991 (35 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1043208309 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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