Karen Sprague, N.P.
NPI 1992887566 · Nurse Practitioner · Dixon, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Sprague, N.P. is a Nurse Practitioner provider in Dixon, CA (NPI 1992887566).
Provider details
- NPI number
- 1992887566
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- N.P.
- Sex
- Female
- Sole proprietor
- No
- License
- 7448 (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
19 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 · 44 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 179 | 56 |
| Metformin Hcl | 146 | 40 |
| Omeprazole | 110 | 20 |
| Losartan Potassium | 99 | 24 |
| Amlodipine Besylate | 88 | 25 |
| Levothyroxine Sodium | 76 | 22 |
| Lisinopril |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$24 across 1 record (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
- 2006-10-20
- Last updated
- 2013-02-20
Frequently asked questions
- What is Karen Sprague's NPI number?
- Karen Sprague's National Provider Identifier (NPI) is 1992887566, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Sprague's specialty?
- Karen Sprague is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Karen Sprague located?
- Karen Sprague's practice location on file with NPPES is 131 W a St, Dixon, CA 95620-3437.
- What is Karen Sprague's phone number?
- The practice phone number listed in the NPPES registry for Karen Sprague is (707) 635-1600.
- Does Karen Sprague accept Medicare?
- Karen Sprague is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Sprague's NPI active?
- Yes — Karen Sprague's NPI (1992887566) is active in the NPPES registry as of the last update on 2013-02-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.