Allen Sebastian Mathew, MD
Nephrology Physician · Eureka, CA
Allen Sebastian Mathew, MD is a nephrology physician with a practice address in Eureka, California, and NPI 1417053075, issued on Sep 14, 2006. Check the license (California G84898, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Allen Sebastian Mathew
- Credential
- MD
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- G84898 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2316 Harrison Ave, Eureka, CA 95501
- Phone
- (707) 444-2534
- Enumerated
- Sep 14, 2006
- Record last updated
- Apr 23, 2024
- Fax
- (707) 441-0344
- Medicaid ID
- 00G848980 CA
- Medicare enrollment
- Enrolled (PECOS I20080519000725); accepts Medicare assignment
- Medical or professional school
- University Of Missouri, Columbia School Of Medicine, 1982
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,468 in California → Look up another NPI →
Also registered at 2316 Harrison Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Karen Ayers, ACNPAcute Care Nurse Practitioner1730284332
- Maura Buckley, PA-CMedical Physician Assistant1609387661
- Patricia Fisher, CFNPFamily Nurse Practitioner1952552762
- Lauren Karasek, NPFamily Nurse Practitioner1295211969
- Candy Stockton-Joreteg, M.D.Family Medicine Physician1417996240
- Rachel Zizza, RNFamily Nurse Practitioner1609251909
Verify Allen Sebastian Mathew in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G84898Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.5 times the Medicare Part D claims of the average nephrology physician in 2024
3,617 Medicare Part D claims for 141 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims. 26 claims were for opioids.
Most prescribed
- Losartan Potassium164 claims
- Mounjaro152 claims
- Torsemide142 claims
- Metoprolol Succinate141 claims
- Pantoprazole Sodium128 claims
- Amlodipine Besylate119 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $2,753.19
11 payments; by number, the most common kind was food and beverage; the largest payer was Calliditas Therapeutics US Inc. The 8,230 providers of this specialty with any payment received $3,091.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Allen Sebastian Mathew among 1,468 nephrology physician records in California
Allen Sebastian Mathew, MD is one of 1,468 nephrology physician records with a practice address in California. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 48% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated1982 · median 2001 among the 1,128 with a school on file
- Record last updated2024 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in California
There are 1,468 nephrology physician records in California.
All 1,468 in California → Every provider in Eureka → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Christine Ives, M.D.Ukiah, CA 954821043374879
- Mohamad Moutaz Almawaldi, MDLakeport, CA 954531750390027
- Sandra Barrow, M.D.Santa Rosa, CA 954071437380987
- Eric Cheung, M.D.Santa Rosa, CA 954071497998777
- Lorigail Echipare, D.OSanta Rosa, CA 954071558725846
- Benjamin Fritz, M.D.Santa Rosa, CA 954071265482772
- George Kavalam, MBBSSanta Rosa, CA 954071962030726
- Sanjay Menon, MDSanta Rosa, CA 954071407315633
Common questions
What is Allen Sebastian Mathew, MD's NPI number?
Allen Sebastian Mathew, MD's National Provider Identifier (NPI) is 1417053075, issued on Sep 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Allen Sebastian Mathew, MD located?
The NPPES record lists a practice address at 2316 Harrison Ave, Eureka, CA, 95501. Phone: (707) 444-2534. Providers update this record themselves, so call before visiting.
How can I verify Allen Sebastian Mathew, MD's license?
NPPES lists California license number G84898, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Allen Sebastian Mathew, MD prescribe under Medicare Part D?
In 2024, Allen Sebastian Mathew, MD had 3,617 Medicare Part D claims for 141 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.