Karla Castro, FNP
Nurse Practitioner · Walnut Creek, CA
Karla Castro, FNP is a nurse practitioner with a practice address in Walnut Creek, California, and NPI 1922513050, issued on Dec 12, 2017. Check the license (California 95008130, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Karla Castro
- Credential
- FNP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 95008130 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1981 N Broadway Ste 200, Walnut Creek, CA 94596
- Phone
- (925) 287-8777
- Enumerated
- Dec 12, 2017
- Record last updated
- Mar 17, 2018 (not updated in 8 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 8,223 in California → Look up another NPI →
Also registered at 1981 N Broadway Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jason Servatius, N.D.Obesity Medicine (Preventive Medicine) Physician1063634822
Verify Karla Castro in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 95008130Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Karla Castro among 8,223 nurse practitioner records in California
Karla Castro, FNP is one of 8,223 nurse practitioner records with a practice address in California. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2017, is newer than 52% of them.
- NPI issued2017 · 52% of these records are older, 44% newer
- In a Medicare fileNo · 65% of these records are
- In the CMS Doctors and Clinicians fileNo · 42% of these records are
- Record last updated2018 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
70 nurse practitioner records list a practice address in Walnut Creek
They are 70 of the 6,170 NPPES records with a practice address in Walnut Creek, and 8,223 nurse practitioner records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 8,223 in California → Every provider in Walnut Creek → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Monica De Witt, FNPWalnut Creek, CA 945961043384134
- Mariam Janzad, NPWalnut Creek, CA 945961043902141
- Paula Jeha, NURSE PRACTITIONERWalnut Creek, CA 945961629413612
- Kalila Kirk, FNPWalnut Creek, CA 945961548940430
- Jessica RolandoWalnut Creek, CA 945961316784671
- Diane Seipel Sherard, R.N.Walnut Creek, CA 945961386615151
- Allison Friede, NPWalnut Creek, CA 945971245794098
- Yajuan Leonard, APRNWalnut Creek, CA 945971336160456
Common questions
What is Karla Castro, FNP's NPI number?
Karla Castro, FNP's National Provider Identifier (NPI) is 1922513050, issued on Dec 12, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Karla Castro, FNP located?
The NPPES record lists a practice address at 1981 N Broadway Ste 200, Walnut Creek, CA, 94596. Phone: (925) 287-8777. Providers update this record themselves, so call before visiting.
How can I verify Karla Castro, FNP's license?
NPPES lists California license number 95008130, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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. 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.