Ann Ma Webster, NP
Family Nurse Practitioner · Orange, CA
Ann Ma Webster, NP is a family nurse practitioner with a practice address in Orange, California, and NPI 1366553984, issued on Aug 31, 2006. Check the license (California NP16588, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ann Ma Webster
- Credential
- NP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- NP16588 CA
Self-reported in NPPES; status is on the state search - Practice location
- 700 S Tustin St, Orange, CA 92866
- Phone
- (714) 633-6373
- Enumerated
- Aug 31, 2006
- Record last updated
- Nov 30, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100127000482); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 16,966 in California → Look up another NPI →
Also registered at 700 S Tustin St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jacqueline CokleyNurse Practitioner1265999429
- Crystal Cruz, LVNLicensed Vocational Nurse1821259755
- Lucy Cubias, N.P.Family Nurse Practitioner1851632525
Verify Ann Ma Webster in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license NP16588Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average family nurse practitioner in 2024
81 Medicare Part D claims for 37 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 31% of claims.
Most prescribed
- Estring19 claims
- Estradiol17 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
- Southern California Permanente Medical GroupBellflower, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ann Ma Webster among 16,966 family nurse practitioner records in California
Ann Ma Webster, NP is one of 16,966 family nurse practitioner records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 1% of them.
- NPI issued2006 · 1% of these records are older, 93% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 40% of these records are
- Graduated2006 · median 2019 among the 6,793 with a school on file
- Record last updated2021 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
137 family nurse practitioner records list a practice address in Orange
They are 137 of the 13,245 NPPES records with a practice address in Orange, and 16,966 family nurse practitioner records in California.
All 16,966 in California → Every provider in Orange → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Joann Binns, DNP, APRN, FNP-COrange, CA 928661750833158
- Beverley BrownellOrange, CA 928661477114122
- Cindy Chau, N.P.Orange, CA 928661073839858
- Rebekah Clark, NPOrange, CA 928661851644215
- Lucy Cubias, N.P.Orange, CA 928661851632525
- Alcides De Oliveira, NURSE PRACTITIONEROrange, CA 928661760626675
- Marie Doan, N.P.Orange, CA 928661518107499
- Jennifer Esparza, FNP-COrange, CA 928661861581878
Common questions
What is Ann Ma Webster, NP's NPI number?
Ann Ma Webster, NP's National Provider Identifier (NPI) is 1366553984, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ann Ma Webster, NP located?
The NPPES record lists a practice address at 700 S Tustin St, Orange, CA, 92866. Phone: (714) 633-6373. Providers update this record themselves, so call before visiting.
How can I verify Ann Ma Webster, NP's license?
NPPES lists California license number NP16588, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Ann Ma Webster, NP prescribe under Medicare Part D?
In 2024, Ann Ma Webster, NP had 81 Medicare Part D claims for 37 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.