Nektarios Butterfield, FNP
Family Nurse Practitioner · San Jose, CA
Nektarios Butterfield, FNP is a family nurse practitioner with a practice address in San Jose, California, and NPI 1497823769, issued on Dec 2, 2006. Check the license (California NPF10013, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Nektarios Butterfield
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- NPF10013 CA
Self-reported in NPPES; status is on the state search - Practice location
- 55 E Julian St, San Jose, CA 95112
- Phone
- (408) 918-2600
- Enumerated
- Dec 2, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (408) 795-1129
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 16,966 in California → Look up another NPI →
Also registered at 55 E Julian St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Nektarios Butterfield in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license NPF10013Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
42% fewer Medicare Part D claims than the average family nurse practitioner in 2024
755 Medicare Part D claims for 58 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Most prescribed
- Amlodipine Besylate71 claims
- Lisinopril48 claims
- Losartan Potassium40 claims
- Metformin Hcl Er32 claims
- Pioglitazone Hcl31 claims
- Metformin Hcl27 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.
Industry payments in 2024: $63.36
3 payments; by number, the most common kind was food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Nektarios Butterfield among 16,966 family nurse practitioner records in California
Nektarios Butterfield, FNP 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 2006, is newer than 1% of them.
- NPI issued2006 · 1% of these records are older, 93% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 40% of these records are
- Record last updated2007 · 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).
Family Nurse Practitioner providers in California
There are 16,966 family nurse practitioner records in California.
All 16,966 in California → Every provider in San Jose → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Vedad BegicSan Jose, CA 951121437801156
- Tri Dam, NURSE PRACTITIONERSan Jose, CA 951121649864604
- Amanda KaoSan Jose, CA 951121720940950
- Gicely Morales, FNPSan Jose, CA 951121073378451
- Rochelle PopyonSan Jose, CA 951121679161335
- Javier Carlos RodriguezSan Jose, CA 951121417613761
- Thomas Sisk, FNP-BCSan Jose, CA 951121538783139
- Shuzing TsungSan Jose, CA 951121063830958
Common questions
What is Nektarios Butterfield, FNP's NPI number?
Nektarios Butterfield, FNP's National Provider Identifier (NPI) is 1497823769, issued on Dec 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Nektarios Butterfield, FNP located?
The NPPES record lists a practice address at 55 E Julian St, San Jose, CA, 95112. Phone: (408) 918-2600. Providers update this record themselves, so call before visiting.
How can I verify Nektarios Butterfield, FNP's license?
NPPES lists California license number NPF10013, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Nektarios Butterfield, FNP prescribe under Medicare Part D?
In 2024, Nektarios Butterfield, FNP had 755 Medicare Part D claims for 58 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.