Quick answers
- Does Hossein Zarrini accept Medicare assignment?
- Yes. Medicare's clinician data says Hossein Zarrini 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 Hossein Zarrini see?
- In 2024, CMS data shows 223 Original Medicare patients and 310 services for Hossein Zarrini. This counts Original Medicare only and measures volume, not quality.
- What is Hossein Zarrini's NPI number?
- 1558418988. 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 Hossein Zarrini, 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 | 223 |
|---|---|
| Services billed to Medicare | 310 |
| Different services or procedures | 22 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)173 services
- Assessment of emotional or behavioral problems (96127)40 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)30 services
- New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more (99202)12 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 cholesterol73%
- High blood pressure70%
- Arthritis48%
- Diabetes32%
- Anxiety27%
- Ischemic heart disease25%
Practice locations
Addresses where Hossein Zarrini is enrolled with Medicare (CMS data updated October 2, 2026).
- 4180 S Rainbow Blvd, Suite 810Las Vegas, NV 89103 (702) 383‑3645
- 7424 S Rainbow Blvd, Suite ALas Vegas, NV 89139 (702) 464‑3213
Group practices
Medicare enrollment lists Hossein Zarrini as a member of these groups (CMS data updated October 2, 2026).
- University Medical Center of Southern Nevada402 clinicians in the group
- Urgent Care Nevada LLC103 clinicians in the group
Specialties
- Family Practiceprimary
- Sports Medicinealso
Other family doctors in Las Vegas
Clinicians with the same Medicare primary specialty in Las Vegas, NV — not a recommendation.
Other clinicians in University Medical Center of Southern Nevada
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2002 (24 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1558418988 |
| 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