Kathryn Rubio Rigonan, MD
Internal Medicine Physician · Fountain Valley, CA
Kathryn Rubio Rigonan, MD is an internal medicine physician with a practice address in Fountain Valley, California, and NPI 1336234210, issued on Oct 4, 2006. Check the license (California A51220, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Kathryn Rubio Rigonan
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A51220 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11100 Warner Ave, Fountain Valley, CA 92708
- Phone
- (714) 754-0100
- Enumerated
- Oct 4, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (714) 754-6806
- Medicaid ID
- 00512200 CA
- Medicare enrollment
- Enrolled (PECOS I20100610000654); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 11100 Warner Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Kathryn Rubio Rigonan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A51220Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
24% more Medicare Part D claims than the average internal medicine physician in 2024
3,948 Medicare Part D claims for 293 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 48 claims were for opioids.
Most prescribed
- Atorvastatin Calcium392 claims
- Amlodipine Besylate305 claims
- Losartan Potassium217 claims
- Metformin Hcl178 claims
- Levothyroxine Sodium132 claims
- Rosuvastatin Calcium102 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: $418.99
21 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 50,334 providers of this specialty with any payment received $1,303.06 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.
83 internal medicine physician records list a practice address in Fountain Valley
They are 83 of the 2,190 NPPES records with a practice address in Fountain Valley, and 17,696 internal medicine physician records in California.
All 83 in Fountain Valley → All 17,696 in California → Every provider in Fountain Valley →
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- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Kathryn Rubio Rigonan, MD's NPI number?
Kathryn Rubio Rigonan, MD's National Provider Identifier (NPI) is 1336234210, issued on Oct 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Kathryn Rubio Rigonan, MD located?
The NPPES record lists a practice address at 11100 Warner Ave, Fountain Valley, CA, 92708. Phone: (714) 754-0100. Providers update this record themselves, so call before visiting.
How can I verify Kathryn Rubio Rigonan, MD's license?
NPPES lists California license number A51220, 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 Kathryn Rubio Rigonan, MD prescribe under Medicare Part D?
In 2024, Kathryn Rubio Rigonan, MD had 3,948 Medicare Part D claims for 293 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.