Stephanie Marie Ong De Leon, A-GNP-C
Gerontology Nurse Practitioner · Oakland, CA
Stephanie Marie Ong De Leon, A-GNP-C is a gerontology nurse practitioner with a practice address in Oakland, California, and NPI 1396350716, issued on Sep 11, 2020. Check the license (California 95016216, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Stephanie Marie Ong De Leon
- Credential
- A-GNP-C
- Primary taxonomy
- Gerontology Nurse Practitioner 363LG0600X
- License numbers
- 95016216 CA
95222645 CA
AG07200182 CA
Self-reported in NPPES; status is on the state search - Practice location
- 250 E 18TH St FL 2, Oakland, CA 94606
- Phone
- (510) 735-3888
- Enumerated
- Sep 11, 2020
- Record last updated
- Mar 29, 2022
- Medicare enrollment
- Enrolled (PECOS I20210120002530); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gerontology nurse practitioner records → All 569 in California → Look up another NPI →
Also registered at 250 E 18TH St FL 2
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lam Ao, RNRegistered Nurse1831937283
- Yin Aye, MDInternal Medicine Physician1548447675
- Biao Hui CenRegistered Nurse1235998006
- Yan ChenRegistered Nurse1316593528
- Henning Chu, NPFamily Nurse Practitioner1336465079
- Taman HoangFamily Medicine Physician1619403060
Verify Stephanie Marie Ong De Leon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 95016216Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% more Medicare Part D claims than the average gerontology nurse practitioner in 2024
2,262 Medicare Part D claims for 251 beneficiaries, against an average of 1,369 among the 6,165 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium251 claims
- Amlodipine Besylate208 claims
- Losartan Potassium168 claims
- Metformin Hcl105 claims
- Hydrochlorothiazide76 claims
- Fluticasone Propionate73 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.
Bills Medicare through one group practice
- Asian Health ServicesOakland, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephanie Marie Ong De Leon among 569 gerontology nurse practitioner records in California
Stephanie Marie Ong De Leon, A-GNP-C is one of 569 gerontology nurse practitioner records with a practice address in California. 64% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 63% of them.
- NPI issued2020 · 63% of these records are older, 32% newer
- In a Medicare fileYes · 64% of these records are
- In the CMS Doctors and Clinicians fileYes · 42% of these records are
- Graduated2020 · median 2018 among the 239 with a school on file
- Record last updated2022 · 44% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LG0600X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gerontology Nurse Practitioner providers in California
There are 569 gerontology nurse practitioner records in California.
All 569 in California → Every provider in Oakland → Gerontology Nurse Practitioner nationwide →
The 8 gerontology nurse practitioner records with the nearest ZIP codes
- Harpreet Bal, AGACNP-BCOakland, CA 946081760035976
- Laura Clarizio, NPOakland, CA 946081316465198
- Lynn Noyce, NURSE PRACTITIONEROakland, CA 946081134867260
- Ann Daleiden, NPOakland, CA 946091093815540
- Catherine Saiki, NPOakland, CA 946091902247422
- Tricia Smallwood, NPOakland, CA 946091245051242
- Martine Bernstein, GNP-BCOakland, CA 946111730422767
- Belkiz Quintanilla MejiaOakland, CA 946011518668698
Common questions
What is Stephanie Marie Ong De Leon, A-GNP-C's NPI number?
Stephanie Marie Ong De Leon, A-GNP-C's National Provider Identifier (NPI) is 1396350716, issued on Sep 11, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Stephanie Marie Ong De Leon, A-GNP-C located?
The NPPES record lists a practice address at 250 E 18TH St FL 2, Oakland, CA, 94606. Phone: (510) 735-3888. Providers update this record themselves, so call before visiting.
How can I verify Stephanie Marie Ong De Leon, A-GNP-C's license?
NPPES lists California license number 95016216, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Stephanie Marie Ong De Leon, A-GNP-C prescribe under Medicare Part D?
In 2024, Stephanie Marie Ong De Leon, A-GNP-C had 2,262 Medicare Part D claims for 251 beneficiaries; the average among gerontology nurse practitioner prescribers was 1,369. 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.