Thomas R. Blom, M.D.
Hematology & Oncology Physician · Princeton, NJ
Thomas R. Blom, M.D. is a hematology & oncology physician with a practice address in Princeton, New Jersey, and NPI 1932304599, issued on Jun 15, 2007. Check the license (New Jersey 25MA07729700, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Thomas R. Blom
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 25MA07729700 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 419 N Harrison St, Princeton, NJ 08540
- Phone
- (609) 924-9300
- Enumerated
- Jun 15, 2007
- Record last updated
- Nov 19, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20090717000400); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 399 in New Jersey → Look up another NPI →
Also registered at 419 N Harrison St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Thomas R. Blom in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license 25MA07729700Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average hematology & oncology physician in 2024
1,854 Medicare Part D claims for 247 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 48% of claims. 117 claims were for opioids.
Most prescribed
- Aranesp105 claims
- Letrozole105 claims
- Darzalex Faspro79 claims
- Eliquis78 claims
- Hydroxyurea63 claims
- Acyclovir62 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: $135.47
4 payments; by number, the most common kind was food and beverage; the largest payer was Gilead Sciences, 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
- Princeton Medical Group,p.a.Princeton, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas R. Blom among 399 hematology & oncology physician records in New Jersey
Thomas R. Blom, M.D. is one of 399 hematology & oncology physician records with a practice address in New Jersey. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 48% of them.
- NPI issued2007 · 48% of these records are older, 43% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2002 · median 2002 among the 294 with a school on file
- Record last updated2014 · 59% 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 Jersey 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 Jersey
There are 399 hematology & oncology physician records in New Jersey.
All 399 in New Jersey → Every provider in Princeton → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Doreen Babott, M.D.Princeton, NJ 085401982634861
- Richard Lee, M.D.Princeton, NJ 085401770621575
- Peter Yi, M.D.Princeton, NJ 085401457499618
- Arvin Yang, MD PHDPrinceton, NJ 085431255549481
- Faheem Farooq, MD, MPHPlainsboro, NJ 085361962866871
- Patrick Fleming, M.D.Plainsboro, NJ 085361538615794
- Vishwanath Gharpure, M.D.Plainsboro, NJ 085361407865793
- Joseph Ho, M.D.Plainsboro, NJ 085361548715998
Common questions
What is Thomas R. Blom, M.D.'s NPI number?
Thomas R. Blom, M.D.'s National Provider Identifier (NPI) is 1932304599, issued on Jun 15, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Thomas R. Blom, M.D. located?
The NPPES record lists a practice address at 419 N Harrison St, Princeton, NJ, 08540. Phone: (609) 924-9300. Providers update this record themselves, so call before visiting.
How can I verify Thomas R. Blom, M.D.'s license?
NPPES lists New Jersey license number 25MA07729700, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Thomas R. Blom, M.D. prescribe under Medicare Part D?
In 2024, Thomas R. Blom, M.D. had 1,854 Medicare Part D claims for 247 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.