Quick answers
- Does Matthew W. Gerenz accept Medicare assignment?
- Yes. Medicare's clinician data says Matthew W. Gerenz 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 Matthew W. Gerenz see?
- In 2024, CMS data shows 17 Original Medicare patients and 42 services for Matthew W. Gerenz. This counts Original Medicare only and measures volume, not quality.
- What is Matthew W. Gerenz's NPI number?
- 1992385785. 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 Matthew W. Gerenz, 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 | 17 |
|---|---|
| Services billed to Medicare | 42 |
| Different services or procedures | 2 |
| Participating Medicare provider | Yes |
| Average age of these patients | 50 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)38 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).
- Depression75%
- Anxiety75%
- High blood pressure71%
Practice locations
Addresses where Matthew W. Gerenz is enrolled with Medicare (CMS data updated October 2, 2026).
- 12301 Wilshire Blvd, Suite 512Los Angeles, CA 90025 (888) 684‑2779
- 5201 Great America Pkwy, Suite 320Santa Clara, CA 95054 (888) 684‑2779
Group practices
Medicare enrollment lists Matthew W. Gerenz as a member of this group (CMS data updated October 2, 2026).
- Mellow Medical Inc a Professional Corporation38 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in Los Angeles
Clinicians with the same Medicare primary specialty in Los Angeles, CA — not a recommendation.
Other clinicians in Mellow Medical Inc a Professional Corporation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2021 (5 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1992385785 |
| 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