George Simpson Knapp, NP
Family Nurse Practitioner · Vista, CA
George Simpson Knapp, NP is a family nurse practitioner with a practice address in Vista, California, and NPI 1124500012, issued on Sep 6, 2018. Check the license (California 95009284, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- George Simpson Knapp
- Credential
- NP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 95009284 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1000 Vale Terrace Dr, Vista, CA 92084
- Phone
- (760) 631-5000
- Enumerated
- Sep 6, 2018
- Record last updated
- Oct 18, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (760) 414-3702
- Medicare enrollment
- Enrolled (PECOS I20181206000513); 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 1000 Vale Terrace Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Azucena AcostaClinical Social Worker1255937496
- Tonya Adkins, MDObstetrics & Gynecology Physician1285721712
- Autumn AhlersFamily Nurse Practitioner1821007519
- Susan AnderaFamily Nurse Practitioner1790914216
- Iris Arrieta, M.D.Obstetrics & Gynecology Physician1659614303
- Barbara Ascher, CNMAdvanced Practice Midwife1598901993
Verify George Simpson Knapp in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 95009284Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
56% fewer Medicare Part D claims than the average family nurse practitioner in 2024
580 Medicare Part D claims for 315 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. 16 claims were for opioids.
Most prescribed
- Albuterol Sulfate Hfa52 claims
- Prednisone44 claims
- Nitrofurantoin Mono-Macro42 claims
- Amoxicillin-Clavulanate Potass39 claims
- Azithromycin34 claims
- Cephalexin34 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
- Arch Health Partners IncPoway, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
George Simpson Knapp among 16,966 family nurse practitioner records in California
George Simpson Knapp, NP 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 2018, is newer than 45% of them.
- NPI issued2018 · 45% of these records are older, 50% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 40% of these records are
- Graduated2017 · median 2019 among the 6,793 with a school on file
- Record last updated2021 · 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).
70 family nurse practitioner records list a practice address in Vista
They are 70 of the 2,017 NPPES records with a practice address in Vista, and 16,966 family nurse practitioner records in California.
All 16,966 in California → Every provider in Vista → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Autumn AhlersVista, CA 920841821007519
- Susan AnderaVista, CA 920841790914216
- Elsie Bernardo-Gregory, NPVista, CA 920841588808349
- Patricia Dean, FNPVista, CA 920841073733119
- Jennifer Detisch, NPVista, CA 920841730215534
- Paloma Garza, NPVista, CA 920841750316238
- Charles Gentzsch, RN, MN, MA, EDD, FNPVista, CA 920841588823157
- Eileen Grass, FNPVista, CA 920841124090873
Common questions
What is George Simpson Knapp, NP's NPI number?
George Simpson Knapp, NP's National Provider Identifier (NPI) is 1124500012, issued on Sep 6, 2018. An NPI identifies a provider in billing; it is not a license.
Where is George Simpson Knapp, NP located?
The NPPES record lists a practice address at 1000 Vale Terrace Dr, Vista, CA, 92084. Phone: (760) 631-5000. Providers update this record themselves, so call before visiting.
How can I verify George Simpson Knapp, NP's license?
NPPES lists California license number 95009284, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does George Simpson Knapp, NP prescribe under Medicare Part D?
In 2024, George Simpson Knapp, NP had 580 Medicare Part D claims for 315 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.