Mamie Choy Williams, A.R.N.P.
Nurse Practitioner · Roseville, CA
Mamie Choy Williams, A.R.N.P. is a nurse practitioner with a practice address in Roseville, California, and NPI 1386071264, issued on Oct 9, 2013. Check the license (California 95024184, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mamie Choy Williams
- Credential
- A.R.N.P.
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License numbers
- 95024184 CA
95039332 CA
672922 NY
AP60534589 WA
Self-reported in NPPES; status is on the state search - Practice location
- 8 Medical Plaza Dr Ste 300, Roseville, CA 95661
- Phone
- (916) 782-5106
- Enumerated
- Oct 9, 2013
- Record last updated
- Jun 16, 2025
- Medicaid ID
- 1386071264 WA
- Medicare enrollment
- Enrolled (PECOS I20230908003530); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 8,223 in California → Look up another NPI →
Also registered at 8 Medical Plaza Dr Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mamie Choy Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 95024184Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average nurse practitioner in 2024
137 Medicare Part D claims for 64 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 22 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen12 claims
- Eliquis11 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: $208.56
3 payments; by number, the most common kind was food and beverage; the largest payer was Boston Scientific Corporation. 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
- Sutter Valley Medical FoundationSacramento, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mamie Choy Williams among 8,223 nurse practitioner records in California
Mamie Choy Williams, A.R.N.P. 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 2013, is newer than 39% of them.
- NPI issued2013 · 39% of these records are older, 58% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 42% of these records are
- Graduated2015 · median 2017 among the 3,425 with a school on file
- Record last updated2025 · 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 Roseville → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- April Cauthen, NPRoseville, CA 956611225185622
- Beth Cueto, APRNRoseville, CA 956611467650267
- Pantea Dunn, MSN PNPRoseville, CA 956611003904418
- Lianna Edwards, FNPRoseville, CA 956611851393524
- Patricia Gurney, NPRoseville, CA 956611699889659
- Lauralee Hess, NPRoseville, CA 956611821190653
- Maria Hibdon, FNPRoseville, CA 956611881630085
- Tracey Johnson, NPRoseville, CA 956611053410571
Common questions
What is Mamie Choy Williams, A.R.N.P.'s NPI number?
Mamie Choy Williams, A.R.N.P.'s National Provider Identifier (NPI) is 1386071264, issued on Oct 9, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Mamie Choy Williams, A.R.N.P. located?
The NPPES record lists a practice address at 8 Medical Plaza Dr Ste 300, Roseville, CA, 95661. Phone: (916) 782-5106. Providers update this record themselves, so call before visiting.
How can I verify Mamie Choy Williams, A.R.N.P.'s license?
NPPES lists California license number 95024184, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Mamie Choy Williams, A.R.N.P. prescribe under Medicare Part D?
In 2024, Mamie Choy Williams, A.R.N.P. had 137 Medicare Part D claims for 64 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.