Anna Andrzejczyk
Hematology & Oncology Physician · Stony Brook, NY
Anna Andrzejczyk is a hematology & oncology physician with a practice address in Stony Brook, New York, and NPI 1275030231, issued on Apr 6, 2018. Check the license (New York 318693-01, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Anna Andrzejczyk
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 318693-01 NY
Self-reported in NPPES; status is on the state search - Practice location
- Dept. OF Internal Medicine, Stony Brook, NY 11794
- Phone
- (631) 444-2493
- Enumerated
- Apr 6, 2018
- Record last updated
- Sep 18, 2024
- Medicare enrollment
- Enrolled (PECOS I20240722001773); accepts Medicare assignment
- Medical or professional school
- State University Of New York At Stony Brook, School Of Medicine, 2018
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,163 in New York → Look up another NPI →
Verify Anna Andrzejczyk in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 318693-01Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
28 Medicare Part D claims for 13 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D.
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: $473.57
10 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 8,560 providers of this specialty with any payment received $7,481.41 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 Internists University Faculty Practice CorporationStony Brook, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Anna Andrzejczyk among 1,163 hematology & oncology physician records in New York
Anna Andrzejczyk is one of 1,163 hematology & oncology physician records with a practice address in New York. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 89% of them.
- NPI issued2018 · 89% of these records are older, 8% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2018 · median 2002 among the 833 with a school on file
- Record last updated2024 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
24 hematology & oncology physician records list a practice address in Stony Brook
They are 24 of the 3,053 NPPES records with a practice address in Stony Brook, and 1,163 hematology & oncology physician records in New York.
All 1,163 in New York → Every provider in Stony Brook → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Crystal Antoine Pepeljugoski, M.D.Stony Brook, NY 117941073856357
- Lea Baer, MDStony Brook, NY 117941609037514
- Harold Bien, PH.D., M.D.Stony Brook, NY 117941902049257
- Jules Cohen, M.D.Stony Brook, NY 117941215112289
- Theodore Gabig, M.D.Stony Brook, NY 117941538194360
- Julie Anne Gemmill, DO, MSStony Brook, NY 117941619313160
- Achuta Guddati, MDStony Brook, NY 117941457639312
- Yusuf Hannun, M.D.Stony Brook, NY 117941336413319
Common questions
What is Anna Andrzejczyk's NPI number?
Anna Andrzejczyk's National Provider Identifier (NPI) is 1275030231, issued on Apr 6, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Anna Andrzejczyk located?
The NPPES record lists a practice address at Dept. OF Internal Medicine, Stony Brook, NY, 11794. Phone: (631) 444-2493. Providers update this record themselves, so call before visiting.
How can I verify Anna Andrzejczyk's license?
NPPES lists New York license number 318693-01, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Anna Andrzejczyk prescribe under Medicare Part D?
In 2024, Anna Andrzejczyk had 28 Medicare Part D claims for 13 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.