Quick answers
- Does Justin Y. Rheem accept Medicare assignment?
- Yes. Medicare's clinician data says Justin Y. Rheem 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 Justin Y. Rheem see?
- In 2024, CMS data shows 318 Original Medicare patients and 3,039 services for Justin Y. Rheem. This counts Original Medicare only and measures volume, not quality.
- What is Justin Y. Rheem's NPI number?
- 1205246113. 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 Justin Y. Rheem, 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 | 318 |
|---|---|
| Services billed to Medicare | 3,039 |
| Different services or procedures | 42 |
| Participating Medicare provider | Yes |
| Average age of these patients | 79 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)1,244 services
- Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes (99458)311 services
- Management using the results of remote vital sign monitoring per calendar month, first 20 minutes (99457)218 services
- Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)196 services
- Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month (99439)115 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%
- Diabetes75%
- High blood pressure73%
- Arthritis58%
- Depression58%
- Osteoporosis28%
Hospitals where Justin Y. Rheem works
Medicare's Facility Affiliation Data lists Justin Y. Rheem 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.
- Torrance Memorial Medical CenterTorrance, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050351
Practice locations
Addresses where Justin Y. Rheem is enrolled with Medicare (CMS data updated October 2, 2026).
- 15435 S Western Ave, Suite 100bGardena, CA 90249 (310) 807‑0840
Specialties
- Internal Medicineprimary
- Geriatric Medicinealso
Other internal medicine doctors in Gardena
Clinicians with the same Medicare primary specialty in Gardena, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Loma Linda University School Of Medicine |
| Graduation year | 2014 (12 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1205246113 |
| 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