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Dr. Roy Oomen Mathew, MD
NPI1740298033
- Publications
- 114
- Clinical trials
- 2
- Industry payments
- $10,089
- Insurance carriers
- 3
- State licenses
- 3
- Practice address
- 5 Bon Air Rd, Larkspur, CA 94939
- Practice phone
- Call (702) 341-3152
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
VA Loma Linda Healthcare System
Larkspur, California
Find Dr. Mathew's professional email, personal email and mobile number
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Dr. Roy Oomen Mathew is a nephrologist in Larkspur, California
Dr. Mathew practices at VA Loma Linda Healthcare System in Larkspur, California.
Dr. Mathew's NPI, 1740298033, was assigned on August 3, 2006. Dr. Mathew graduated from Renaissance School of Medicine at Stony Brook University in 2002. Dr. Mathew's New York license number on file is A231100.
NPI and contact details
- NPI
- 1740298033NPI Registry (opens in a new tab)
- NPI enumeration date
- August 3, 2006
- NPI status
- Active
- Practice phone
- (702) 341-3152
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Roy Oomen Mathew practices at VA Loma Linda Healthcare System in Larkspur, California
Dr. Mathew's primary practice is VA Loma Linda Healthcare System, at 5 Bon Air Rd, Larkspur, CA 94939 in Marin County. The practice phone is (702) 341-3152.
- VA Loma Linda Healthcare System5 Bon Air Rd, Larkspur, CA 94939 · Marin CountyPhone(702) 341-3152
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Roy Oomen Mathew is affiliated with 1 site of care
Dr. Mathew's primary practice is VA Loma Linda Healthcare System in Larkspur, California.
VA Loma Linda Healthcare SystemPrimary
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Roy Oomen Mathew's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mathew practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| VA Loma Linda Healthcare System | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Roy Oomen Mathew is one of 1,401 nephrologists in California
Nephrology is Dr. Mathew's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Mathew is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Mathew's licenses on file in 3 states: New York, South Carolina and California.
Specialties and state licenses
- Nephrology, New YorkPrimary
- South Carolina license
- California license
Nephrologists near Dr. Mathew
Counts of nephrologists 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. Roy Oomen Mathew's patients have a median age of 73
Across all payers, Dmand AI patient panel data puts Dr. Mathew's median patient age at 73, with 0% women.
Dr. Mathew's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women0%
- Men100%
Source: Dmand AI Patient Panel Data
Dr. Roy Oomen Mathew has 114 publications on record
Dmand AI links 114 papers to Dr. Mathew, published from 2010 to 2025. 2021 was the busiest year, with 14. The most frequent topics are Renal Insufficiency, Chronic, Kidney and Renal Dialysis. Dr. Mathew has published most often in Cardiovasc Drugs Ther. Dr. Mathew's most frequent co-authors are Janani Rangaswami, MD, Jerome Louis Fleg, MD and Loay H. Salman, MD.
Papers114
Years published2010 to 2025
Dr. Mathew's papers by year, 2016 to 2025
Topics Dr. Mathew writes about most
- Renal Insufficiency, Chronic
- Kidney
- Renal Dialysis
- Acute Kidney Injury
- Cardiovascular Diseases
- Heart Failure
- Kidney Failure, Chronic
- Blood Pressure
Dr. Mathew's most frequent co-authors
- Janani Rangaswami, MD28 shared papers
- Jerome Louis Fleg, MD10 shared papers
- Loay H. Salman, MD8 shared papers
Recent publications by Dr. Mathew
Cardiorenal Med
Acute Kidney InjuryKidneyRecovery of Function
Nephrol Dial Transplant
Biomedical ResearchBlood PressureGastrointestinal Microbiome
See who Dr. Mathew researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Mathew works with, so you can find a warm path to the right nephrologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Roy Oomen Mathew has worked on 2 clinical trials
Dmand AI links Dr. Mathew to 2 clinical trials. Conditions studied include Dyspnea, Vitamin D Deficiency and Avitaminosis.
Conditions in Dr. Mathew's trials
- Dyspnea
- Vitamin D Deficiency
- Avitaminosis
- Signs and Symptoms, Respiratory
Recent clinical trials with Dr. Mathew
DyspneaSigns and Symptoms, Respiratory
Sustainability of Vitamin D Levels After Repletion With Ergocalciferol In Chronic Kidney Disease Stage 5D (opens in a new tab)
TerminatedPhase 4
Vitamin D DeficiencyAvitaminosisErgocalciferol
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Roy Oomen Mathew received $10,089 in industry payments from 2022 to 2025
CMS Open Payments shows 6 general payments to Dr. Mathew from 4 drug and device companies from 2022 to 2025. Consulting fees make up the largest share, 92% of the total. Procyrion, Inc. paid the most, $9,286.
General payments to Dr. Mathew by program year, 2022 to 2025
General payments to Dr. Mathew by kind, 2022 to 2025
$10.1Kin total
- Consulting fees$9,28692%
- Speaker and faculty fees$7287%
- Education$511%
- Food and beverage$240%
Companies that paid Dr. Mathew the most, 2022 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Roy Oomen Mathew graduated from Renaissance School of Medicine at Stony Brook University
Dr. Mathew graduated from Renaissance School of Medicine at Stony Brook University in 2002.
- Medical school
- Board certified in internal medicine
- Board certified in nephrology
Source: Dmand AI Professional Profile Data
Dr. Roy Oomen Mathew accepts plans from 3 insurance carriers
Dr. Mathew is in network with 3 carriers, including Excellus BlueCross BlueShield, NY State Medicaid and VT State Medicaid. Medicaid plans come from the most carriers, 2. Check the plan with the practice before a visit.
- Excellus BlueCross BlueShield
- NY State Medicaid
- VT State Medicaid
Plan types Dr. Mathew accepts, by number of carriers
- Medicaid2
- EPO1
- HMO1
- Medicare1
- POS1
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Roy Oomen Mathew'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (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. Roy Oomen Mathew
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. Roy Oomen Mathew's NPI number?
Dr. Roy Oomen Mathew's NPI number is 1740298033. It was assigned on August 3, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Roy Oomen Mathew?
Dr. Roy Oomen Mathew is a nephrologist in Larkspur, California. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Roy Oomen Mathew practice?
Dr. Mathew practices at 5 Bon Air Rd, Larkspur, CA 94939. Dr. Mathew's primary practice is VA Loma Linda Healthcare System in Larkspur, California.
What is Dr. Roy Oomen Mathew's office phone number?
The practice phone on file for Dr. Mathew is (702) 341-3152.
What is Dr. Roy Oomen Mathew's medical license number?
Dr. Mathew's New York license number on file is A231100, one of the licenses on file in 3 states.
Which states has Dr. Roy Oomen Mathew been licensed in?
Dmand AI has state licenses on file for Dr. Mathew in New York (2004 to 2025), South Carolina (2019 to 2027) and California (2024 to 2026).
Is Dr. Roy Oomen Mathew board certified?
Yes. Dr. Mathew is board certified in internal medicine by the American Board of Internal Medicine.
Where did Dr. Roy Oomen Mathew go to medical school?
Dr. Mathew graduated from Renaissance School of Medicine at Stony Brook University in 2002.
Has Dr. Roy Oomen Mathew received payments from drug or device companies?
CMS Open Payments shows $10,089 in general payments to Dr. Mathew from 4 companies from 2022 to 2025. The largest total came from Procyrion, Inc.
How long has Dr. Roy Oomen Mathew been practicing?
Dr. Mathew graduated from medical school in 2002, 24 years ago.
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Does Dr. Roy Oomen Mathew do research?
Dmand AI links 114 publications to Dr. Mathew, published from 2010 to 2025. Dr. Mathew has worked on 2 clinical trials.
Who does Dr. Roy Oomen Mathew publish with?
Dr. Mathew's most frequent co-authors are Janani Rangaswami, MD (28 shared papers), Jerome Louis Fleg, MD (10 shared papers) and Loay H. Salman, MD (8 shared papers).
What insurance does Dr. Roy Oomen Mathew accept?
Dr. Mathew is in network with 3 carriers, including Excellus BlueCross BlueShield, NY State Medicaid and VT State Medicaid. Medicaid plans come from the most carriers, 2. Check the plan with the practice before a visit.
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