Matthew Gerenz, MD
NPI 1992385785 · Psychiatry Physician · Orange, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Gerenz, MD is a Psychiatry Physician provider in Orange, CA (NPI 1992385785).
Provider details
- NPI number
- 1992385785
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A183126 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
5 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
38 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 38 | $82 |
Typical Medicare-allowed amounts for these services range $82–$82 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 21 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Escitalopram Oxalate | 46 |
| Trazodone Hcl | 37 |
| Clonazepam | 30 |
| Quetiapine Fumarate | 27 |
| Lorazepam | 26 |
| Mirtazapine | 25 |
| Risperidone | 25 |
| Aripiprazole | 25 |
| Divalproex Sodiumbrand: Divalproex Sodium Er | 22 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-04-14
- Last updated
- 2024-04-25
- Certified
- 2024-04-25
Frequently asked questions
- What is Matthew Gerenz's NPI number?
- Matthew Gerenz's National Provider Identifier (NPI) is 1992385785, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Gerenz's specialty?
- Matthew Gerenz is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Gerenz located?
- Matthew Gerenz's practice location on file with NPPES is 3800 W Chapman Ave, Orange, CA 92868-1638.
- What is Matthew Gerenz's phone number?
- The practice phone number listed in the NPPES registry for Matthew Gerenz is (701) 400-2926.
- Does Matthew Gerenz accept Medicare?
- Matthew Gerenz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Gerenz's NPI active?
- Yes — Matthew Gerenz's NPI (1992385785) is active in the NPPES registry as of the last update on 2024-04-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.