Wilhelmina Frederica Sizer, ACNP
Family Nurse Practitioner · Rochester, NY
Wilhelmina Frederica Sizer, ACNP is a family nurse practitioner with a practice address in Rochester, New York, and NPI 1689851164, issued on Jan 27, 2008. Check the license (New York 339712, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Wilhelmina Frederica Sizer
- Credential
- ACNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- 339712 NY
F430449 NY
Self-reported in NPPES; status is on the state search - Practice location
- 480 Genesee St, Rochester, NY 14611
- Phone
- (585) 436-3040
- Enumerated
- Jan 27, 2008
- Record last updated
- May 17, 2016 (not updated in 10 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 14,805 in New York → Look up another NPI →
Also registered at 480 Genesee St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Walter Beecher, M.D.Family Medicine Physician1255350948
- Victor Colon, DDSGeneral Practice Dentistry1275623100
- Michelle Devens, RNFamily Nurse Practitioner1629603998
- Isolyn Guy, RDHDental Hygienist1174336259
- Michele Hannagan, FNPFamily Nurse Practitioner1427078567
- Joanne Lim, D.M.D.General Practice Dentistry1336472166
Verify Wilhelmina Frederica Sizer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this profession
Search for license 339712Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average family nurse practitioner in 2024
90 Medicare Part D claims for 65 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Most prescribed
- Prednisone14 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 76.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Wilhelmina Frederica Sizer among 14,805 family nurse practitioner records in New York
Wilhelmina Frederica Sizer, ACNP is one of 14,805 family nurse practitioner records with a practice address in New York. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 13% of them.
- NPI issued2008 · 13% of these records are older, 85% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileNo · 49% of these records are
- Record last updated2016 · 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 363LF0000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
803 family nurse practitioner records list a practice address in Rochester
They are 803 of the 20,520 NPPES records with a practice address in Rochester, and 14,805 family nurse practitioner records in New York.
All 14,805 in New York → Every provider in Rochester → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
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- Cynthia Cappiello, N.P.Rochester, NY 146111801837620
- Patricia Coury-Doniger, NPRochester, NY 146111609948959
- Elaine Dailey, NPRochester, NY 146111215970108
- Karen Emerson, FNPRochester, NY 146111326070491
- Michele Hannagan, FNPRochester, NY 146111427078567
- Constance Lawrence, FNP CRochester, NY 146111376573659
Common questions
What is Wilhelmina Frederica Sizer, ACNP's NPI number?
Wilhelmina Frederica Sizer, ACNP's National Provider Identifier (NPI) is 1689851164, issued on Jan 27, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Wilhelmina Frederica Sizer, ACNP located?
The NPPES record lists a practice address at 480 Genesee St, Rochester, NY, 14611. Phone: (585) 436-3040. Providers update this record themselves, so call before visiting.
How can I verify Wilhelmina Frederica Sizer, ACNP's license?
NPPES lists New York license number 339712, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
How much does Wilhelmina Frederica Sizer, ACNP prescribe under Medicare Part D?
In 2024, Wilhelmina Frederica Sizer, ACNP had 90 Medicare Part D claims for 65 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Wilhelmina Frederica Sizer, ACNP's MIPS final score?
The 2023 MIPS final score is 76.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.