Matthew Larrew, D.O.
NPI 1508002742 · Emergency Medicine Physician · Ventura, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Larrew, D.O. is a Emergency Medicine Physician provider in Ventura, CA (NPI 1508002742).
Provider details
- NPI number
- 1508002742
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 20A12880 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
17 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
969 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 364 | $9 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 317 | $182 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 177 | $126 |
| Critical Care, First 30-74 Minutes99291 | 111 | $225 |
Typical Medicare-allowed amounts for these services range $9–$225 (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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 55 | 53 |
| Ondansetronbrand: Ondansetron Odt | 41 | 41 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 36 | 36 |
| Prednisone | 30 | 30 |
| Naproxen | 29 | 28 |
| Cyclobenzaprine Hcl | 21 | 21 |
| Meclizine Hcl | 11 | 11 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$16 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-12-17
- Last updated
- 2013-09-16
Frequently asked questions
- What is Matthew Larrew's NPI number?
- Matthew Larrew's National Provider Identifier (NPI) is 1508002742, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Larrew's specialty?
- Matthew Larrew is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Larrew located?
- Matthew Larrew's practice location on file with NPPES is 3291 Loma Vista Rd, Ventura, CA 93003-3099.
- What is Matthew Larrew's phone number?
- The practice phone number listed in the NPPES registry for Matthew Larrew is (805) 652-6000.
- Does Matthew Larrew accept Medicare?
- Matthew Larrew is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Larrew's NPI active?
- Yes — Matthew Larrew's NPI (1508002742) is active in the NPPES registry as of the last update on 2013-09-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.