Matthew Seth Weissler, M.D.
Hematology & Oncology Physician · White Plains, NY
Matthew Seth Weissler, M.D. is a hematology & oncology physician with a practice address in White Plains, New York, and NPI 1528225695, issued on May 16, 2008. Check the license (New York 235558, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Matthew Seth Weissler
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 235558 NY
Self-reported in NPPES; status is on the state search - Practice location
- 210 Westchester Ave, White Plains, NY 10604
- Phone
- (914) 681-5200
- Enumerated
- May 16, 2008
- Record last updated
- Nov 15, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (914) 682-6409
- Medicare enrollment
- Enrolled (PECOS I20090625000503); accepts Medicare assignment
- Medical or professional school
- New York University School Of Medicine, 2003
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,163 in New York → Look up another NPI →
Also registered at 210 Westchester Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Matthew Seth Weissler 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 235558Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.3 times the Medicare Part D claims of the average hematology & oncology physician in 2024
2,009 Medicare Part D claims for 256 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 28% of claims.
Most prescribed
- Anastrozole179 claims
- Omeprazole142 claims
- Eliquis126 claims
- Prednisone105 claims
- Tamoxifen Citrate90 claims
- Ondansetron Hcl88 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
- Westchester Medical Group, P.CWhite Plains, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Matthew Seth Weissler among 1,163 hematology & oncology physician records in New York
Matthew Seth Weissler, M.D. 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 2008, is newer than 56% of them.
- NPI issued2008 · 56% of these records are older, 38% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2003 · median 2002 among the 833 with a school on file
- Record last updated2013 · 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).
Hematology & Oncology Physician providers in New York
There are 1,163 hematology & oncology physician records in New York.
All 1,163 in New York → Every provider in White Plains → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Michael Bernstein, M.D.West Harrison, NY 106041922234251
- Stuart Feldman, MDWhite Plains, NY 106041376529586
- Phoebe Harvey, M.D.White Plains, NY 106041932386414
- Wanda Noguera-Irizarry, M.D.White Plains, NY 106041720035314
- Joshua Raff, M.D.White Plains, NY 106041689672362
- Simeon Schwartz, MDWhite Plains, NY 106041750355319
- Cardinale Smith, MD, PHDWest Harrison, NY 106041932307600
- Valiere Alcena, MDWhite Plains, NY 106051679525018
Common questions
What is Matthew Seth Weissler, M.D.'s NPI number?
Matthew Seth Weissler, M.D.'s National Provider Identifier (NPI) is 1528225695, issued on May 16, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Matthew Seth Weissler, M.D. located?
The NPPES record lists a practice address at 210 Westchester Ave, White Plains, NY, 10604. Phone: (914) 681-5200. Providers update this record themselves, so call before visiting.
How can I verify Matthew Seth Weissler, M.D.'s license?
NPPES lists New York license number 235558, 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 Matthew Seth Weissler, M.D. prescribe under Medicare Part D?
In 2024, Matthew Seth Weissler, M.D. had 2,009 Medicare Part D claims for 256 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.