Shannon Clasen, MSN, APRN, FNP-C
NPI 1891073425 · Family Nurse Practitioner · Freedom, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Shannon Clasen, MSN, APRN, FNP-C is a Family Nurse Practitioner provider in Freedom, CA (NPI 1891073425).
Provider details
- NPI number
- 1891073425
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- MSN, APRN, FNP-C
- Sex
- Female
- Sole proprietor
- No
- License
- 95011598 (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 tenure33% of score
14 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 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 71 | 46 |
| Metformin Hcl | 57 | 25 |
| Lisinopril | 41 | 27 |
| Amlodipine Besylate | 39 | 24 |
| Losartan Potassium | 33 | 18 |
| Empagliflozinbrand: Jardiance | 21 | — |
| Ibuprofen |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$226 across 9 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
- 2011-08-01
- Last updated
- 2025-03-17
- Certified
- 2025-03-17
Frequently asked questions
- What is Shannon Clasen's NPI number?
- Shannon Clasen's National Provider Identifier (NPI) is 1891073425, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Shannon Clasen's specialty?
- Shannon Clasen is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Shannon Clasen located?
- Shannon Clasen's practice location on file with NPPES is 99 Airport Blvd, Freedom, CA 95019-2917.
- What is Shannon Clasen's phone number?
- The practice phone number listed in the NPPES registry for Shannon Clasen is (831) 724-7521.
- Does Shannon Clasen accept Medicare?
- Shannon Clasen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Shannon Clasen's NPI active?
- Yes — Shannon Clasen's NPI (1891073425) is active in the NPPES registry as of the last update on 2025-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.