Esther Guardado, P.A.C
Physician Assistant · Fullerton, CA
Esther Guardado, P.A.C is a physician assistant with a practice address in Fullerton, California, and NPI 1073794152, issued on Nov 17, 2007. Check the license (California 17635, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Esther Guardado
- Credential
- P.A.C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 17635 CA
Self-reported in NPPES; status is on the state search - Practice location
- 101 Laguna RD Ste 200, Fullerton, CA 92835
- Phone
- (714) 992-5350
- Enumerated
- Nov 17, 2007
- Record last updated
- Nov 25, 2024
- Medicare enrollment
- Enrolled (PECOS I20140709001316); accepts Medicare assignment
- Medical or professional school
- Western University Of Health Sciences College Of Dental Med, 2004
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 101 Laguna RD Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Bethany Clark, FNPFamily Nurse Practitioner1639953433
Verify Esther Guardado in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 17635Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.6 times the Medicare Part D claims of the average physician assistant in 2024
2,956 Medicare Part D claims for 236 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 16 claims were for opioids.
Most prescribed
- Metformin Hcl194 claims
- Atorvastatin Calcium157 claims
- Amlodipine Besylate151 claims
- Lisinopril143 claims
- Losartan Potassium131 claims
- Levothyroxine Sodium118 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: $165.84
3 payments; by number, the most common kind was food and beverage; the largest payer was Coloplast Corp. The 64,719 providers of this specialty with any payment received $841.65 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.
Bills Medicare through one group practice
- Providence Medical FoundationFullerton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Esther Guardado among 14,451 physician assistant records in California
Esther Guardado, P.A.C is one of 14,451 physician assistant records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 13% of them.
- NPI issued2007 · 13% of these records are older, 78% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2004 · median 2018 among the 7,214 with a school on file
- Record last updated2024 · 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 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
138 physician assistant records list a practice address in Fullerton
They are 138 of the 5,437 NPPES records with a practice address in Fullerton, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Fullerton → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Shannon Cornwell, PAFullerton, CA 928351902961626
- Negeen Farmand, PAFullerton, CA 928351255530168
- Suzanne Freesemann, P.A.Fullerton, CA 928351285750430
- Melinda Garcia, PAFullerton, CA 928351437226263
- Erica Gomez, DMSC, MPAP, PA-CFullerton, CA 928351316044282
- Andrea Inskeep, PA-CFullerton, CA 928351578752424
- Elethea Locke-Harris, PA-CFullerton, CA 928351528196169
- Laura Lowry, PAFullerton, CA 928351841408390
Common questions
What is Esther Guardado, P.A.C's NPI number?
Esther Guardado, P.A.C's National Provider Identifier (NPI) is 1073794152, issued on Nov 17, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Esther Guardado, P.A.C located?
The NPPES record lists a practice address at 101 Laguna RD Ste 200, Fullerton, CA, 92835. Phone: (714) 992-5350. Providers update this record themselves, so call before visiting.
How can I verify Esther Guardado, P.A.C's license?
NPPES lists California license number 17635, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Esther Guardado, P.A.C prescribe under Medicare Part D?
In 2024, Esther Guardado, P.A.C had 2,956 Medicare Part D claims for 236 beneficiaries; the average among physician assistant prescribers was 830. 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.