Erin Finston, FNP-C
NPI 1538375829 · Family Nurse Practitioner · Orange, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Erin Finston, FNP-C is a Family Nurse Practitioner provider in Orange, CA (NPI 1538375829).
Provider details
- NPI number
- 1538375829
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP-C
- Sex
- Female
- Sole proprietor
- Yes
- License
- 587420 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,108 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 300 | $84 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 244 | $118 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 91 | $13 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 85 | $102 |
| Detection Test By Immunoassay With Direct Visual Observation for Respiratory Syncytial Virus87807 | 66 | $13 |
| Urinalysis, Manual Test81002 | 65 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cefdinir | 42 | 40 |
| Zolpidem Tartrate | 35 | — |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 30 | 30 |
| Atorvastatin Calcium | 28 | 11 |
| Azithromycin | 28 | 27 |
| Rosuvastatin Calcium | 25 | — |
| Doxycycline Hyclate | 24 | 24 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$649 across 30 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
- 2007-05-15
- Last updated
- 2007-07-08
Frequently asked questions
- What is Erin Finston's NPI number?
- Erin Finston's National Provider Identifier (NPI) is 1538375829, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Erin Finston's specialty?
- Erin Finston is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Erin Finston located?
- Erin Finston's practice location on file with NPPES is 455 S Main St, Orange, CA 92868-3835.
- What is Erin Finston's phone number?
- The practice phone number listed in the NPPES registry for Erin Finston is (714) 289-4876.
- Does Erin Finston accept Medicare?
- Erin Finston is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Erin Finston's NPI active?
- Yes — Erin Finston's NPI (1538375829) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.