Karen Greenhaw, FNP
NPI 1649548686 · Family Health Clinical Nurse Specialist · Penn Valley, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Greenhaw, FNP is a Family Health Clinical Nurse Specialist provider in Penn Valley, CA (NPI 1649548686).
Provider details
- NPI number
- 1649548686
- Entity type
- Individual
- Primary specialty
- Family Health Clinical Nurse SpecialistPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- Yes
- License
- 19916 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service 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 · 36 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 95 | 39 |
| Atorvastatin Calcium | 92 | 43 |
| Losartan Potassium | 64 | 29 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 53 | 24 |
| Rosuvastatin Calcium | 49 | 23 |
| Tramadol Hcl | 47 | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$181 across 8 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
- 2011-12-06
- Last updated
- 2024-02-26
- Certified
- 2023-07-13
Frequently asked questions
- What is Karen Greenhaw's NPI number?
- Karen Greenhaw's National Provider Identifier (NPI) is 1649548686, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Greenhaw's specialty?
- Karen Greenhaw is listed in the NPPES registry with a primary specialty of Family Health Clinical Nurse Specialist (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Karen Greenhaw located?
- Karen Greenhaw's practice location on file with NPPES is 11400 Pleasant Valley Rd, Penn Valley, CA 95946-9001.
- What is Karen Greenhaw's phone number?
- The practice phone number listed in the NPPES registry for Karen Greenhaw is (530) 432-7023.
- Does Karen Greenhaw accept Medicare?
- Karen Greenhaw is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Greenhaw's NPI active?
- Yes — Karen Greenhaw's NPI (1649548686) is active in the NPPES registry as of the last update on 2024-02-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.