Karen Chase, FNP RN
NPI 1891729406 · Nurse Practitioner · Fortuna, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Chase, FNP RN is a Nurse Practitioner provider in Fortuna, CA (NPI 1891729406).
Provider details
- NPI number
- 1891729406
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP RN
- Sex
- Female
- Sole proprietor
- No
- License
- 1101505 (VA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
749 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 654 | $79 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 21 | $96 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 21 | $111 |
| Urinalysis, Manual Test81002 | 20 | $3 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 19 | $49 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 81 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 147 | 39 |
| Lisinopril | 141 | 42 |
| Atorvastatin Calcium | 131 | 37 |
| Amlodipine Besylate | 129 | 40 |
| Omeprazole | 118 | 35 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 110 | 25 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-10
- Last updated
- 2014-08-22
Frequently asked questions
- What is Karen Chase's NPI number?
- Karen Chase's National Provider Identifier (NPI) is 1891729406, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Chase's specialty?
- Karen Chase is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Karen Chase located?
- Karen Chase's practice location on file with NPPES is 3304 Renner Dr, Fortuna, CA 95540-7102.
- What is Karen Chase's phone number?
- The practice phone number listed in the NPPES registry for Karen Chase is (707) 725-4477.
- Does Karen Chase accept Medicare?
- Karen Chase is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Chase's NPI active?
- Yes — Karen Chase's NPI (1891729406) is active in the NPPES registry as of the last update on 2014-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.