Alexander Belkin, MD
Hematology & Oncology Physician · Pittsfield, MA
Alexander Belkin, MD is a hematology & oncology physician with a practice address in Pittsfield, Massachusetts, and NPI 1346701653, issued on Mar 28, 2019. Check the license (Massachusetts 1021083, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Alexander Belkin
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 1021083 MA
Self-reported in NPPES; status is on the state search - Practice location
- 165 Tor CT, Pittsfield, MA 01201
- Phone
- (413) 443-6000
- Enumerated
- Mar 28, 2019
- Record last updated
- Jun 30, 2026
- Medicare enrollment
- Enrolled (PECOS I20250917001700); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 461 in Massachusetts → Look up another NPI →
Also registered at 165 Tor CT
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Elizabeth Bartlett, PA-CMedical Physician Assistant1831070556
- Trevor Bayliss, M.D.Hematology & Oncology Physician1982821906
- Glenda Boykin, PA-CMedical Physician Assistant1104078120
- Andrew Demaggio, MDPhysical Medicine & Rehabilitation Physician1619921608
- Carol Dickinson, FNPFamily Nurse Practitioner1467572370
- Marthanne Donaldson, ANPAdult Health Nurse Practitioner1285754184
Verify Alexander Belkin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 1021083Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
89 Medicare Part D claims for 26 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.
Most prescribed
- Anastrozole15 claims
- Ibrance13 claims
- Pilocarpine Hcl13 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: $1,716.02
27 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Biotech, Inc. 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
- Berkshire Faculty Services IncPittsfield, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alexander Belkin among 461 hematology & oncology physician records in Massachusetts
Alexander Belkin, MD is one of 461 hematology & oncology physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 95% of them.
- NPI issued2019 · 95% of these records are older, 3% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2018 · median 2004 among the 303 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 207RH0003X and a Massachusetts 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 Massachusetts
There are 461 hematology & oncology physician records in Massachusetts.
All 461 in Massachusetts → Every provider in Pittsfield → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Trevor Bayliss, M.D.Pittsfield, MA 012011982821906
- Michael Deleo, M.DPittsfield, MA 012011447222443
- Paul Rosenthal, M.D.Pittsfield, MA 012011568434488
- Jesse Spector, M.DPittsfield, MA 012011598737231
- Caio Teixeira Heleno, MDPittsfield, MA 012011578115077
- Spyridon Triantos, M.D.Pittsfield, MA 012011952373110
- Harvey Zimbler, M.D.Pittsfield, MA 012011083686224
- Sugam GouliSpringfield, MA 011991235781881
Common questions
What is Alexander Belkin, MD's NPI number?
Alexander Belkin, MD's National Provider Identifier (NPI) is 1346701653, issued on Mar 28, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Alexander Belkin, MD located?
The NPPES record lists a practice address at 165 Tor CT, Pittsfield, MA, 01201. Phone: (413) 443-6000. Providers update this record themselves, so call before visiting.
How can I verify Alexander Belkin, MD's license?
NPPES lists Massachusetts license number 1021083, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Alexander Belkin, MD prescribe under Medicare Part D?
In 2024, Alexander Belkin, MD had 89 Medicare Part D claims for 26 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.