Anne Marie Klassert, NP
Adult Health Nurse Practitioner · Stony Brook, NY
Anne Marie Klassert, NP is an adult health nurse practitioner with a practice address in Stony Brook, New York, and NPI 1467448985, issued on Sep 20, 2005. Check the license (New York F300922-1, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Anne Marie Klassert
- Credential
- NP
- Primary taxonomy
- Adult Health Nurse Practitioner 363LA2200X
- License number
- F300922-1 NY
Self-reported in NPPES; status is on the state search - Practice location
- University Hospital AT Stony Brook, Stony Brook, NY 11794
- Phone
- (631) 444-1205
- Enumerated
- Sep 20, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (631) 444-7620
- Medicaid ID
- 02322223 NY
- Medicare enrollment
- Enrolled (PECOS I20040419001630); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest adult health nurse practitioner records → All 6,028 in New York → Look up another NPI →
Also registered at University Hospital AT Stony Brook
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Anne Marie Klassert 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 F300922-1Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% fewer Medicare Part D claims than the average adult health nurse practitioner in 2024
893 Medicare Part D claims for 285 beneficiaries, against an average of 1,280 among the 16,937 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Tamsulosin Hcl195 claims
- Finasteride114 claims
- Myrbetriq69 claims
- Sulfamethoxazole-Trimethoprim42 claims
- Alfuzosin Hcl Er39 claims
- Oxybutynin Chloride Er30 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 MIPS final score for 2023 (Medicare payment program): 98.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,317.57
36 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Biotech, Inc. The 12,291 providers of this specialty with any payment received $946.40 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
- Stony Brook Urology University Faculty Practice CorporationEast Setauket, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Anne Marie Klassert among 6,028 adult health nurse practitioner records in New York
Anne Marie Klassert, NP is one of 6,028 adult health nurse practitioner records with a practice address in New York. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 98% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 44% of these records are
- Graduated1993 · median 2016 among the 2,678 with a school on file
- Record last updated2026 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2200X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
131 adult health nurse practitioner records list a practice address in Stony Brook
They are 131 of the 3,053 NPPES records with a practice address in Stony Brook, and 6,028 adult health nurse practitioner records in New York.
All 6,028 in New York → Every provider in Stony Brook → Adult Health Nurse Practitioner nationwide →
The 8 adult health nurse practitioner records with the nearest ZIP codes
- Susan Aiello, NPStony Brook, NY 117941992917819
- Lilande Beausoleil, NPStony Brook, NY 117941912024951
- Susan Callahan, NPStony Brook, NY 117941881683274
- Jorge Carpintero, NPStony Brook, NY 117941568577872
- Kathleen Dhundale, NPStony Brook, NY 117941235349549
- Debbie Fitzgerald, NURSE PRACTITIONERStony Brook, NY 117941871589184
- Teresa Kramer, ANP CStony Brook, NY 117941821022971
- Tara McSweeney, ANPStony Brook, NY 117941871622795
Common questions
What is Anne Marie Klassert, NP's NPI number?
Anne Marie Klassert, NP's National Provider Identifier (NPI) is 1467448985, issued on Sep 20, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Anne Marie Klassert, NP located?
The NPPES record lists a practice address at University Hospital AT Stony Brook, Stony Brook, NY, 11794. Phone: (631) 444-1205. Providers update this record themselves, so call before visiting.
How can I verify Anne Marie Klassert, NP's license?
NPPES lists New York license number F300922-1, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
How much does Anne Marie Klassert, NP prescribe under Medicare Part D?
In 2024, Anne Marie Klassert, NP had 893 Medicare Part D claims for 285 beneficiaries; the average among adult health nurse practitioner prescribers was 1,280. Part D covers Medicare prescriptions only.
What is Anne Marie Klassert, NP's MIPS final score?
The 2023 MIPS final score is 98.5 of 100. 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.