Quick answers
- Does Gholam Reza Hosseinian accept Medicare assignment?
- Medicare's clinician data says Gholam Reza Hosseinian may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Gholam Reza Hosseinian see?
- In 2024, CMS data shows 180 Original Medicare patients and 1,381 services for Gholam Reza Hosseinian. This counts Original Medicare only and measures volume, not quality.
- What is Gholam Reza Hosseinian's NPI number?
- 1124042882. 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 Gholam Reza Hosseinian, 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 | 180 |
|---|---|
| Services billed to Medicare | 1,381 |
| Different services or procedures | 12 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)929 services
- Insertion of needle into vein for collection of blood sample (36415)199 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)133 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)76 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)16 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%
- Arthritis75%
- Diabetes62%
- Ischemic heart disease44%
- Anxiety44%
Practice locations
Addresses where Gholam Reza Hosseinian is enrolled with Medicare (CMS data updated October 2, 2026).
- 18040 Sherman Way, Suite 310Reseda, CA 91335 (818) 881‑8989
Specialties
- General Practiceprimary
- Pediatric Medicinealso
Other general practitioners in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1990 (36 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1124042882 |
| 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