NPPES file of Aug 9, 2026

Joseph O. Jacobson, MD

Medical Oncology Physician · Boston, MA

Joseph O. Jacobson, MD is a medical oncology physician with a practice address in Boston, Massachusetts, and NPI 1942282041, issued on Nov 16, 2005. Check the license (Massachusetts 48077, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1942282041
Name
Joseph O. Jacobson
Credential
MD
Primary taxonomy
Medical Oncology Physician 207RX0202X
License number
48077 MA
Self-reported in NPPES; status is on the state search
Practice location
450 Brookline Ave, Boston, MA 02215
Phone
(617) 632-3468
Enumerated
Nov 16, 2005
Record last updated
Dec 8, 2011 (not updated in 15 years: call before relying on the address or phone)
Fax
(617) 632-5786
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest medical oncology physician records → All 421 in Massachusetts → Look up another NPI →

Also registered at 450 Brookline Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Gregory Abel, MDHematology & Oncology Physician1285611954
  2. Lara Abousamra, PHARMDPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1851183404
  3. Karley Adams, PAPhysician Assistant1578261764
  4. Lauren Adams, PA-CPhysician Assistant1902763469
  5. Ana Aguilar-Bonilla, M.D.Pediatric Hematology & Oncology Physician1023319761
  6. Andrew Aguirre, MD, PHDMedical Oncology Physician1609071208

Verify Joseph O. Jacobson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
    Search for license 48077    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Massachusetts license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Joseph O. Jacobson among 421 medical oncology physician records in Massachusetts

Joseph O. Jacobson, MD is one of 421 medical oncology physician records with a practice address in Massachusetts. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 90% newer
  • In a Medicare fileNo · 76% of these records are
  • In the CMS Doctors and Clinicians fileNo · 69% of these records are
  • Record last updated2011 · 51% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Medical Oncology Physician providers in Massachusetts

There are 421 medical oncology physician records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 421 in Massachusetts → Every provider in Boston → Medical Oncology Physician nationwide →

The 8 medical oncology physician records with the nearest ZIP codes

  1. Steven Come, M.D.Boston, MA 022151619940137
  2. David D'Adamo, MDBoston, MA 022151295706224
  3. George Demetri, MDBoston, MA 022151841267093
  4. William Hahn, MD PHDBoston, MA 022151457313652
  5. Bruce Johnson, MDBoston, MA 022151578523866
  6. Robert Mayer, MDBoston, MA 022151659361327
  7. Erica Mayer, MD MPHBoston, MA 022151336121789
  8. Nikhil Munshi, MDBoston, MA 022151912979212

Common questions

What is Joseph O. Jacobson, MD's NPI number?

Joseph O. Jacobson, MD's National Provider Identifier (NPI) is 1942282041, issued on Nov 16, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Joseph O. Jacobson, MD located?

The NPPES record lists a practice address at 450 Brookline Ave, Boston, MA, 02215. Phone: (617) 632-3468. Providers update this record themselves, so call before visiting.

How can I verify Joseph O. Jacobson, MD's license?

NPPES lists Massachusetts license number 48077, 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.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.