Sonja Fontana, DNP, FNP
NPI 1326232455 · Family Nurse Practitioner · Visalia, CA
Enrolled with Medicare as Order and Referring Only - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sonja Fontana, DNP, FNP is a Family Nurse Practitioner provider in Visalia, CA (NPI 1326232455).
Provider details
- NPI number
- 1326232455
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- DNP, FNP
- Sex
- Female
- Sole proprietor
- No
- License
- 450325 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
Allopathic & Osteopathic Physicians
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
18 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 65 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 194 | 25 |
| Alprazolam | 148 | 24 |
| Levothyroxine Sodium | 87 | 19 |
| Losartan Potassium | 79 | 20 |
| Duloxetine Hcl | 68 | — |
| Montelukast Sodium | 60 | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$398 across 19 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-08-31
- Last updated
- 2023-03-07
- Certified
- 2020-02-05
Frequently asked questions
- What is Sonja Fontana's NPI number?
- Sonja Fontana's National Provider Identifier (NPI) is 1326232455, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sonja Fontana's specialty?
- Sonja Fontana is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Sonja Fontana located?
- Sonja Fontana's practice location on file with NPPES is 1011 N. Demaree St., Visalia, CA 93291-5156.
- What is Sonja Fontana's phone number?
- The practice phone number listed in the NPPES registry for Sonja Fontana is (559) 734-6700.
- Does Sonja Fontana accept Medicare?
- Sonja Fontana is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sonja Fontana's NPI active?
- Yes — Sonja Fontana's NPI (1326232455) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.