Dr. Matthew Daniel Larrew, DO
- Medicare services, 2024
- 969
- Medicare patients, 2024
- 585
- Part D claims, 2024
- 377
- MIPS score, 2024
- 97
- Hospital affiliations
- 2
- Practice address
- 1600 N Rose Ave, Oxnard, CA 93030
- Practice phone
- Call (805) 988-2500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Larrew's professional email, personal email and mobile number
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Dr. Matthew Daniel Larrew is an emergency medicine physician in Oxnard, California
Dr. Larrew practices at Dignity Health - St. John's Regional Medical Center in Oxnard, California, part of CommonSpirit Health.
Dr. Larrew's NPI, 1508002742, was assigned on December 17, 2008. Dr. Larrew graduated from Arizona College of Osteopathic Medicine - Glendale in 2005. Dr. Larrew's California license number on file is 20A12880.
- NPI
- 1508002742NPI Registry (opens in a new tab)
- NPI enumeration date
- December 17, 2008
- NPI status
- Active
- Practice phone
- (805) 988-2500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 2005
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Matthew Daniel Larrew practices at Dignity Health - St. John's Regional Medical Center in Oxnard, California
Dr. Larrew's primary practice is Dignity Health - St. John's Regional Medical Center, at 1600 N Rose Ave, Oxnard, CA 93030 in Ventura County. The practice phone is (805) 988-2500.
- Dignity Health - St. John's Regional Medical Center1600 N Rose Ave, Oxnard, CA 93030 · Ventura CountyPhone(805) 988-2500
Source: Dmand AI Affiliation Data
Dr. Matthew Daniel Larrew is affiliated with 5 sites of care and 4 medical groups
Dr. Larrew's primary practice is Dignity Health - St. John's Regional Medical Center in Oxnard, California, part of CommonSpirit Health. The medical group on file is Vituity. Dmand AI also links Dr. Larrew to 1 more hospital, 3 group practices and clinics and 3 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Matthew Daniel Larrew's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Larrew practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dignity Health - St. John's Regional Medical Center | Available with a free account |
| +4 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Matthew Daniel Larrew is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Larrew's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Larrew is board certified in emergency medicine by the AOA Board of Emergency Medicine. Dmand AI has Dr. Larrew's licenses on file in 3 states: California, Missouri and Pennsylvania.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
- Missouri license
- Pennsylvania license
Emergency medicine physicians near Dr. Larrew
Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Matthew Daniel Larrew billed Medicare for 969 services in 2024
CMS data shows 969 Medicare services from Dr. Larrew across 4 procedure codes in 2024, for 585 Medicare patients. Medicare paid $85,102 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Larrew's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6462024: 6056%
- Tests and treatments
- 2023: 4372024: 36417%
Dr. Larrew compared with the California median for emergency medicine physicians, 2024
- Dr. Larrew
- California median
- Medicare services
- 969vs 2653.7 times
- Medicare patients
- 585vs 2432.4 times
- Part D claims
- 234vs 623.8 times
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Larrew's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Matthew Daniel Larrew treated 585 Medicare patients in 2024, average age 77
CMS counts 585 Medicare patients who saw Dr. Larrew in 2024. The largest group is 75 to 84, with 210 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 38% are also on Medicaid. Their average risk score is 2.32, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Larrew's median patient age at 48, with 54% women.
Dr. Larrew's Medicare patients by age, 2024
Dr. Larrew's Medicare patients by sex, 2024
- Women32455%
- Men26145%
Chronic conditions among Dr. Larrew's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis52%
- Diabetes46%
- Ischemic heart disease46%
- Mood disorders39%
- Heart failure38%
- Atrial fibrillation37%
Share of Medicare patients with each condition. A patient can have several.
Dr. Larrew's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 48
Patient panel by sex, all payers
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Matthew Daniel Larrew wrote 377 Medicare Part D claims in 2024
In 2024, Dr. Larrew wrote 377 Medicare Part D claims for 260 patients. 95% of them were for generic drugs. CMS names the drug for 234 of them, across 8 drugs with 11 or more claims each, at $961 in total drug cost. In 2023, CMS named 176 claims across 6 drugs.
Dr. Larrew's Part D claims by kind of drug, 2024
- Generic359 claims95%
- Brand-name and other18 claims5%
Dr. Larrew's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Larrew's Part D claims, 2024
- Opioids11%41 of 377 claims
- Antibiotics24%89 of 377 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1762024: 23433%
Drugs named by CMS: 8 in 2024, 6 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Matthew Daniel Larrew scored 97 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 97 out of 100 for Dr. Larrew for performance year 2024, reported as part of a group.
Dr. Larrew's MIPS scores, performance year 2024
- 97of 100Final score
- 90of 100Quality
- 40of 100Improvement Activities
- 78of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Matthew Daniel Larrew received $192 in industry payments from 2018 to 2025
CMS Open Payments shows 3 general payments to Dr. Larrew from 2 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 100% of the total. Medtronic USA, Inc. paid the most, $156.
General payments to Dr. Larrew by program year, 2018 to 2025
Companies that paid Dr. Larrew the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Matthew Daniel Larrew graduated from Arizona College of Osteopathic Medicine - Glendale
Dr. Larrew graduated from Arizona College of Osteopathic Medicine - Glendale in 2005. Dr. Larrew is a member of AOA.
- Medical school
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Dr. Matthew Daniel Larrew accepts plans from 1 insurance carrier
Dr. Larrew is in network with 1 carrier, including Blue Cross and Blue Shield of Kansas. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Blue Cross and Blue Shield of Kansas
Source: Dmand AI Insurance Network Data
Sources for Dr. Matthew Daniel Larrew's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Matthew Daniel Larrew
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Matthew Daniel Larrew's NPI number?
Dr. Matthew Daniel Larrew's NPI number is 1508002742. It was assigned on December 17, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Matthew Daniel Larrew?
Dr. Matthew Daniel Larrew is an emergency medicine physician in Oxnard, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Matthew Daniel Larrew practice?
Dr. Larrew practices at 1600 N Rose Ave, Oxnard, CA 93030. Dr. Larrew's primary practice is Dignity Health - St. John's Regional Medical Center in Oxnard, California, part of CommonSpirit Health. Dmand AI also links Dr. Larrew to 1 hospital, 3 group practices and clinics and 3 medical groups.
What is Dr. Matthew Daniel Larrew's office phone number?
The practice phone on file for Dr. Larrew is (805) 988-2500.
What is Dr. Matthew Daniel Larrew's medical license number?
Dr. Larrew's California license number on file is 20A12880, one of the licenses on file in 3 states.
Which states has Dr. Matthew Daniel Larrew been licensed in?
Dmand AI has state licenses on file for Dr. Larrew in California (2013 to 2025), Missouri (2010 to 2014) and Pennsylvania (2008 to 2010).
Which hospitals is Dr. Matthew Daniel Larrew affiliated with?
Dr. Larrew practices at Dignity Health - St. John's Regional Medical Center in Oxnard, California. Dmand AI links Dr. Larrew to 1 more hospital.
What medical group is Dr. Matthew Daniel Larrew part of?
Dr. Larrew is linked to Vituity. Dmand AI links Dr. Larrew to 3 more medical groups.
Does Dr. Matthew Daniel Larrew accept Medicare?
Yes. CMS data shows Dr. Larrew billed Medicare for 969 services in 2024.
What is Dr. Matthew Daniel Larrew's MIPS score?
Dr. Larrew's MIPS final score for performance year 2024 is 97 out of 100, reported as part of a group.
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How many Medicare patients does Dr. Matthew Daniel Larrew see?
CMS counts 585 Medicare patients who saw Dr. Larrew in 2024, with an average age of 77.
Is Dr. Matthew Daniel Larrew board certified?
Yes. Dr. Larrew is board certified in emergency medicine by the AOA Board of Emergency Medicine.
What services does Dr. Matthew Daniel Larrew bill to Medicare?
In 2024, Dr. Larrew's most billed Medicare services were heart test or procedure (93010), emergency department visit (99285) and emergency department visit (99284).
Where did Dr. Matthew Daniel Larrew go to medical school?
Dr. Larrew graduated from Arizona College of Osteopathic Medicine - Glendale in 2005.
What drugs does Dr. Matthew Daniel Larrew prescribe most?
In 2024 Medicare Part D data, Dr. Larrew's most prescribed drugs by claims were Cephalexin, Ondansetron ODT and Hydrocodone-Acetaminophen.
Has Dr. Matthew Daniel Larrew received payments from drug or device companies?
CMS Open Payments shows $192 in general payments to Dr. Larrew from 2 companies from 2018 to 2025. The largest total came from Medtronic USA, Inc.
How long has Dr. Matthew Daniel Larrew been practicing?
Dr. Larrew graduated from medical school in 2005, 21 years ago.
What insurance does Dr. Matthew Daniel Larrew accept?
Dr. Larrew is in network with 1 carrier, including Blue Cross and Blue Shield of Kansas. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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