Jennifer K. Darby
Family Nurse Practitioner · Sonoma, CA
Jennifer K. Darby is a family nurse practitioner with a practice address in Sonoma, California, and NPI 1356863831, issued on Jul 17, 2017. Check the license (California 95006845, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Jennifer K. Darby
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- 95006845 CA
0000022542 TN
Self-reported in NPPES; status is on the state search - Practice location
- 19270 Sonoma Highway, Sonoma, CA 95476
- Phone
- (707) 939-6070
- Enumerated
- Jul 17, 2017
- Record last updated
- Jul 17, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20211228000727); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 16,966 in California → Look up another NPI →
Also registered at 19270 Sonoma Highway
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Stacie Anderson, AGNPGerontology Nurse Practitioner1407695182
- Claudia Govea Ochoa, REGISTER NURSERegistered Nurse1265973143
- Jennifer Hasa, M.D.Family Medicine Physician1982951851
Verify Jennifer K. Darby in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 95006845Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% fewer Medicare Part D claims than the average family nurse practitioner in 2024
250 Medicare Part D claims for 164 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin-Clavulanate Potass37 claims
- Prednisone30 claims
- Azithromycin18 claims
- Albuterol Sulfate Hfa14 claims
- Nitrofurantoin Mono-Macro13 claims
- Cephalexin12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Multicare Health SystemKent, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jennifer K. Darby among 16,966 family nurse practitioner records in California
Jennifer K. Darby is one of 16,966 family nurse practitioner records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 40% of them.
- NPI issued2017 · 40% of these records are older, 55% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 40% of these records are
- Graduated2016 · median 2019 among the 6,793 with a school on file
- Record last updated2017 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 family nurse practitioner records list a practice address in Sonoma
They are 9 of the 395 NPPES records with a practice address in Sonoma, and 16,966 family nurse practitioner records in California.
All 16,966 in California → Every provider in Sonoma → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Steven Brewer, FNPSonoma, CA 954761235020991
- Janet Byrd, FNP-CSonoma, CA 954761225438294
- Margaret Leisz, FNPSonoma, CA 954761326581331
- Melinda Moore, FNPSonoma, CA 954761316095490
- Anatoliy Moroz, FNPSonoma, CA 954761851038806
- Holly Oswald, N.P.Sonoma, CA 954761306991872
- Mei Ou, NPSonoma, CA 954761538783956
- Kenneth Waters, RN, PHNSonoma, CA 954761457226714
Common questions
What is Jennifer K. Darby's NPI number?
Jennifer K. Darby's National Provider Identifier (NPI) is 1356863831, issued on Jul 17, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Jennifer K. Darby located?
The NPPES record lists a practice address at 19270 Sonoma Highway, Sonoma, CA, 95476. Phone: (707) 939-6070. Providers update this record themselves, so call before visiting.
How can I verify Jennifer K. Darby's license?
NPPES lists California license number 95006845, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Jennifer K. Darby prescribe under Medicare Part D?
In 2024, Jennifer K. Darby had 250 Medicare Part D claims for 164 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.