Cindy Sieun An, AGPCNP-BC
Nurse Practitioner · Fullerton, CA
Cindy Sieun An, AGPCNP-BC is a nurse practitioner with a practice address in Fullerton, California, and NPI 1801579420, issued on Aug 10, 2023. Check the license (California 95025982, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Cindy Sieun An
- Credential
- AGPCNP-BC
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 95025982 CA
Self-reported in NPPES; status is on the state search - Practice location
- 100 N State College Blvd Ste H, Fullerton, CA 92831
- Phone
- (714) 824-6565
- Enumerated
- Aug 10, 2023
- Record last updated
- Jan 16, 2026
- Fax
- (714) 930-7926
- Medicare enrollment
- Enrolled (PECOS I20230925000364); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 8,223 in California → Look up another NPI →
Also registered at 100 N State College Blvd Ste H
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Minnah Cho, MSN, FNP-CNurse Practitioner1790277515
- Hovhannes Ghazaryan, MDPain Medicine Physician1851910665
- Shveta Jain, M.D.Pain Medicine (Anesthesiology) Physician1598024226
- Torrence Puck, PA-CPhysician Assistant1528685054
Verify Cindy Sieun An in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 95025982Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% more Medicare Part D claims than the average nurse practitioner in 2024
1,519 Medicare Part D claims for 270 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims. 624 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen341 claims
- Gabapentin226 claims
- Oxycodone-Acetaminophen98 claims
- Tramadol Hcl78 claims
- Pregabalin72 claims
- Tizanidine Hcl71 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: $637.34
14 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 38,884 providers of this specialty with any payment received $791.64 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
- Balboa Nephrology Medical Group IncFountain Valley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Cindy Sieun An among 8,223 nurse practitioner records in California
Cindy Sieun An, AGPCNP-BC 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. Its NPI, issued in 2023, is newer than 82% of them.
- NPI issued2023 · 82% of these records are older, 13% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 42% of these records are
- Graduated2022 · median 2017 among the 3,425 with a school on file
- Record last updated2026 · 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).
Nurse Practitioner providers in California
There are 8,223 nurse practitioner records in California.
All 8,223 in California → Every provider in Fullerton → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Minnah Cho, MSN, FNP-CFullerton, CA 928311790277515
- Lashawn McCombs, NPFullerton, CA 928311629301452
- Miao YuFullerton, CA 928311427586882
- Kiwon Park, FNP-CFullerton, CA 928321346124864
- Silvia SonFullerton, CA 928321871140285
- Valerie VanFullerton, CA 928321932585866
- Jennifer Viray, NPFullerton, CA 928321801316591
- Erol Deculing, NPFullerton, CA 928331992124606
Common questions
What is Cindy Sieun An, AGPCNP-BC's NPI number?
Cindy Sieun An, AGPCNP-BC's National Provider Identifier (NPI) is 1801579420, issued on Aug 10, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Cindy Sieun An, AGPCNP-BC located?
The NPPES record lists a practice address at 100 N State College Blvd Ste H, Fullerton, CA, 92831. Phone: (714) 824-6565. Providers update this record themselves, so call before visiting.
How can I verify Cindy Sieun An, AGPCNP-BC's license?
NPPES lists California license number 95025982, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Cindy Sieun An, AGPCNP-BC prescribe under Medicare Part D?
In 2024, Cindy Sieun An, AGPCNP-BC had 1,519 Medicare Part D claims for 270 beneficiaries; the average among nurse practitioner prescribers was 1,109. 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.