Sandy Martinez Guadan, FNP-BC
Primary Care Nurse Practitioner · Coto De Caza, CA
Sandy Martinez Guadan, FNP-BC is a primary care nurse practitioner with a practice address in Coto De Caza, California, and NPI 1639975162, issued on Feb 24, 2025. Check the license (California 95034088, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Sandy Martinez Guadan
- Credential
- FNP-BC
- Primary taxonomy
- Primary Care Nurse Practitioner 363LP2300X
- License number
- 95034088 CA
Self-reported in NPPES; status is on the state search - Practice location
- 30 Carnoustie Way, Coto De Caza, CA 92679
- Phone
- (714) 454-7339
- Enumerated
- Feb 24, 2025
- Record last updated
- Feb 24, 2025
- Medicare enrollment
- Enrolled (PECOS I20260331002859); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest primary care nurse practitioner records → All 1,131 in California → Look up another NPI →
Verify Sandy Martinez Guadan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 95034088Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Onclick Healthcare IncorporatedTrabuco Canyon, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sandy Martinez Guadan among 1,131 primary care nurse practitioner records in California
Sandy Martinez Guadan, FNP-BC is one of 1,131 primary care nurse practitioner records with a practice address in California. 63% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2025, is newer than 85% of them.
- NPI issued2025 · 85% of these records are older, 5% newer
- In a Medicare fileYes · 63% of these records are
- In the CMS Doctors and Clinicians fileYes · 35% of these records are
- Graduated2024 · median 2019 among the 398 with a school on file
- Record last updated2025 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP2300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1 primary care nurse practitioner record lists a practice address in Coto De Caza
They are 1 of the 30 NPPES records with a practice address in Coto De Caza, and 1,131 primary care nurse practitioner records in California.
All 1,131 in California → Every provider in Coto De Caza → Primary Care Nurse Practitioner nationwide →
The 8 primary care nurse practitioner records with the nearest ZIP codes
- Annie Hadfield, NURSE PRACTITIONERLaguna Niguel, CA 926771265041651
- Tien DoWestminster, CA 926831508348632
- Linda Nguyen, NPWestminster, CA 926831669959599
- Dzung NguyenWestminster, CA 926831285108944
- Tiffany Nguyen, NPWestminster, CA 926831194489310
- Patricia Good, NPSan Clemente, CA 926721255757217
- Johannah Hale, NPMission Viejo, CA 926911659221414
- Jodi Deemer, MSN, AGPCNPNewport Beach, CA 926631366973794
Common questions
What is Sandy Martinez Guadan, FNP-BC's NPI number?
Sandy Martinez Guadan, FNP-BC's National Provider Identifier (NPI) is 1639975162, issued on Feb 24, 2025. An NPI identifies a provider in billing; it is not a license.
Where is Sandy Martinez Guadan, FNP-BC located?
The NPPES record lists a practice address at 30 Carnoustie Way, Coto De Caza, CA, 92679. Phone: (714) 454-7339. Providers update this record themselves, so call before visiting.
How can I verify Sandy Martinez Guadan, FNP-BC's license?
NPPES lists California license number 95034088, 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. 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.