Sonja Irene Fontana, DNP, FNP
Family Nurse Practitioner · Visalia, CA
Sonja Irene Fontana, DNP, FNP is a family nurse practitioner with a practice address in Visalia, California, and NPI 1326232455, issued on Aug 31, 2007. Check the license (California 11610, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Sonja Irene Fontana
- Credential
- DNP, FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- 11610 CA
450325 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1011 N. Demaree St., Visalia, CA 93291
- Phone
- (559) 734-6700
- Enumerated
- Aug 31, 2007
- Record last updated
- Jul 21, 2026
- Fax
- (559) 734-6705
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 16,966 in California → Look up another NPI →
Verify Sonja Irene Fontana in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 11610Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% more Medicare Part D claims than the average family nurse practitioner in 2024
2,380 Medicare Part D claims for 136 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 287 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen194 claims
- Alprazolam148 claims
- Levothyroxine Sodium87 claims
- Losartan Potassium79 claims
- Duloxetine Hcl68 claims
- Montelukast Sodium60 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: $397.70
19 payments; by number, the most common kind was food and beverage; the largest payer was Revance Therapeutics, Inc. The 99,489 providers of this specialty with any payment received $650.95 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.
Sonja Irene Fontana among 16,966 family nurse practitioner records in California
Sonja Irene Fontana, DNP, FNP is one of 16,966 family nurse practitioner records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 7% of them.
- NPI issued2007 · 7% of these records are older, 87% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 40% of these records are
- Record last updated2026 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
125 family nurse practitioner records list a practice address in Visalia
They are 125 of the 4,225 NPPES records with a practice address in Visalia, and 16,966 family nurse practitioner records in California.
All 16,966 in California → Every provider in Visalia → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Mary Anderson, NPVisalia, CA 932911962597575
- Manjit Araich, FNPVisalia, CA 932911356554133
- Rhett Beattie, FNPVisalia, CA 932911528336435
- Carolyn Berglund, FNPVisalia, CA 932911609896869
- Sandeep Bhangoo, N.PVisalia, CA 932911265716542
- Robyn Boertje, FNPVisalia, CA 932911740588771
- Angelica Cabrera-Alvarado, NPVisalia, CA 932911578895124
- Michelle Cody, M.S.N., F. N. P.Visalia, CA 932911093072480
Common questions
What is Sonja Irene Fontana, DNP, FNP's NPI number?
Sonja Irene Fontana, DNP, FNP's National Provider Identifier (NPI) is 1326232455, issued on Aug 31, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Sonja Irene Fontana, DNP, FNP located?
The NPPES record lists a practice address at 1011 N. Demaree St., Visalia, CA, 93291. Phone: (559) 734-6700. Providers update this record themselves, so call before visiting.
How can I verify Sonja Irene Fontana, DNP, FNP's license?
NPPES lists California license number 11610, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Sonja Irene Fontana, DNP, FNP prescribe under Medicare Part D?
In 2024, Sonja Irene Fontana, DNP, FNP had 2,380 Medicare Part D claims for 136 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.