Dr. Catherine Marie Sever, MD
- Medicare services, 2024
- 23
- Medicare patients, 2024
- 21
- Part D claims, 2024
- 1,815
- Hospital affiliations
- 2
- Industry payments
- $2,260
- Practice address
- 325 W Channel Islands Blvd, Oxnard, CA 93033
- Practice phone
- Call (805) 648-9561
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Las Islas Family Medical Group - South
FQHC - Main Site · Oxnard, California
Find Dr. Sever's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Catherine Marie Sever is a family medicine physician in Oxnard, California
Dr. Sever practices at Las Islas Family Medical Group - South in Oxnard, California.
Dr. Sever's NPI, 1639233760, was assigned on December 21, 2006. Dr. Sever graduated from David Geffen School of Medicine at UCLA in 1990. Dr. Sever holds California license G74869.
- NPI
- 1639233760NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9739251828
- NPI enumeration date
- December 21, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (805) 648-9561
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 62
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Catherine Marie Sever practices at Las Islas Family Medical Group - South in Oxnard, California
Dr. Sever's primary practice is Las Islas Family Medical Group - South, at 325 W Channel Islands Blvd, Oxnard, CA 93033 in Ventura County. The practice phone is (805) 648-9561.
- Las Islas Family Medical Group - South325 W Channel Islands Blvd, Oxnard, CA 93033 · Ventura CountyPhone(805) 648-9561
Source: Dmand AI Affiliation Data
Dr. Catherine Marie Sever is affiliated with 5 sites of care and 2 medical groups
Dr. Sever's primary practice is Las Islas Family Medical Group - South in Oxnard, California. Dr. Sever is also affiliated with Ventura County Medical Center. The medical group on file is Ventura County Medical Center. Dmand AI also links Dr. Sever to 1 more hospital, 2 group practices and clinics and 1 medical group, 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. Catherine Marie Sever's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sever practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Las Islas Family Medical Group - South | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Catherine Marie Sever is one of 15,680 family medicine physicians in California
Family medicine is Dr. Sever's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Sever is board certified in family medicine by the American Board of Family Medicine. Dr. Sever is licensed in California.
Specialties and state licenses
- Family medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists chronic diabetes and diabetic emergency among the conditions Dr. Sever treats.
Family medicine physicians near Dr. Sever
Counts of family 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. Catherine Marie Sever billed Medicare for 23 services in 2024
CMS data shows 23 Medicare services from Dr. Sever across 1 procedure code in 2024, all of them office visits, for 21 Medicare patients. Medicare paid $1,186 for them. Every service was in an office.
Dr. Sever's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 692024: 2367%
- Tests and treatments
- 2023: 162024: 0100%
Dr. Sever compared with the California median for family medicine physicians, 2024
- Dr. Sever
- California median
- Medicare services
- 23vs 24691% below
- Medicare patients
- 21vs 11882% below
- Part D claims
- 1,645vs 83397% above
Medians across 15,349 family medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Sever'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Sever and other family medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Catherine Marie Sever treated 21 Medicare patients in 2024, average age 69
CMS counts 21 Medicare patients who saw Dr. Sever in 2024. 75% of them have diabetes, and 75% have high blood pressure. Their average risk score is 2.21, 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. Sever's median patient age at 51, with 62% women.
Chronic conditions among Dr. Sever's Medicare patients, 2024
- Diabetes75%
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease62%
Share of Medicare patients with each condition. A patient can have several.
Dr. Sever's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 51
Patient panel by sex, all payers
- Women62%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Catherine Marie Sever wrote 1,815 Medicare Part D claims in 2024
In 2024, Dr. Sever wrote 1,815 Medicare Part D claims for 184 patients. 30% of them were for generic drugs. CMS names the drug for 1,645 of them, across 36 drugs with 11 or more claims each, at $769,202 in total drug cost. In 2023, CMS named 1,694 claims across 33 drugs.
Dr. Sever's Part D claims by kind of drug, 2024
- Generic551 claims30%
- Brand-name1,046 claims58%
- Other218 claims12%
Dr. Sever'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,6942024: 1,6453%
Drugs named by CMS: 36 in 2024, 33 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. Catherine Marie Sever offers telehealth to Medicare patients
Dr. Sever accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Sever as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Catherine Marie Sever received $2,260 in industry payments from 2016 to 2025
CMS Open Payments shows 95 general payments to Dr. Sever from 21 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Dexcom, Inc. paid the most, $437.
General payments to Dr. Sever by program year, 2016 to 2025
General payments to Dr. Sever by kind, 2016 to 2025
- Food and beverage$2,254100%
- Education$70%
Companies that paid Dr. Sever the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Catherine Marie Sever graduated from David Geffen School of Medicine at UCLA
Dr. Sever graduated from David Geffen School of Medicine at UCLA in 1990.
- Medical school
- Board certified in family medicine
Source: Dmand AI Professional Profile Data
Dr. Catherine Marie Sever accepts plans from 15 insurance carriers
Dr. Sever is in network with 15 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- HCSC
- Alliant Health Plans
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- +7 more carriersWith a free account
Plan types Dr. Sever accepts, by number of carriers
- PPO10
- Medicare7
- HMO6
- POS5
- EPO4
Source: Dmand AI Insurance Network Data
Sources for Dr. Catherine Marie Sever'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 | Doctors and Clinicians National Downloadable File (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. Catherine Marie Sever
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. Catherine Marie Sever's NPI number?
Dr. Catherine Marie Sever's NPI number is 1639233760. It was assigned on December 21, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Catherine Marie Sever?
Dr. Catherine Marie Sever is a family medicine physician in Oxnard, California. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Catherine Marie Sever practice?
Dr. Sever practices at 325 W Channel Islands Blvd, Oxnard, CA 93033. Dr. Sever's primary practice is Las Islas Family Medical Group - South in Oxnard, California. Dmand AI also links Dr. Sever to 1 hospital, 2 group practices and clinics and 1 medical group.
What is Dr. Catherine Marie Sever's office phone number?
The practice phone on file for Dr. Sever is (805) 648-9561.
What is Dr. Catherine Marie Sever's medical license number?
Dr. Sever holds California license G74869.
Which hospitals is Dr. Catherine Marie Sever affiliated with?
Dr. Sever is affiliated with Ventura County Medical Center. Dmand AI links Dr. Sever to 1 more hospital.
What medical group is Dr. Catherine Marie Sever part of?
Dr. Sever is linked to Ventura County Medical Center. Dmand AI links Dr. Sever to 1 more medical group.
Does Dr. Catherine Marie Sever accept Medicare?
Yes. CMS data shows Dr. Sever billed Medicare for 23 services in 2024, and Dr. Sever accepts Medicare assignment.
Does Dr. Catherine Marie Sever offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Sever as offering telehealth services.
How many Medicare patients does Dr. Catherine Marie Sever see?
CMS counts 21 Medicare patients who saw Dr. Sever in 2024, with an average age of 69.
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Is Dr. Catherine Marie Sever board certified?
Yes. Dr. Sever is board certified in family medicine by the American Board of Family Medicine.
What services does Dr. Catherine Marie Sever bill to Medicare?
In 2024, Dr. Sever's most billed Medicare services were office visit, established patient (99213).
Where did Dr. Catherine Marie Sever go to medical school?
Dr. Sever graduated from David Geffen School of Medicine at UCLA in 1990.
What drugs does Dr. Catherine Marie Sever prescribe most?
In 2024 Medicare Part D data, Dr. Sever's most prescribed drugs by claims were Metformin HCl, Jardiance and Glimepiride.
Has Dr. Catherine Marie Sever received payments from drug or device companies?
CMS Open Payments shows $2,260 in general payments to Dr. Sever from 21 companies from 2016 to 2025. The largest total came from Dexcom, Inc.
How long has Dr. Catherine Marie Sever been practicing?
Dr. Sever graduated from medical school in 1990, 36 years ago.
What insurance does Dr. Catherine Marie Sever accept?
Dr. Sever is in network with 15 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
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