NPPES file of Aug 9, 2026

Lauren E. Dias, MD

Hematology & Oncology Physician · Boston, MA

Lauren E. Dias, MD is a hematology & oncology physician with a practice address in Boston, Massachusetts, and NPI 1215928346, issued on Oct 28, 2005. Check the license (Massachusetts 210535, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1215928346
Name
Lauren E. Dias
Credential
MD
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License number
210535 MA
Self-reported in NPPES; status is on the state search
Practice location
55 Fruit St, Boston, MA 02114
Phone
(617) 724-7386
Enumerated
Oct 28, 2005
Record last updated
Oct 22, 2012 (not updated in 14 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20060213000693); accepts Medicare assignment
Medical or professional school
Harvard Medical School, 1999
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 55 Fruit St

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

  1. Affan Aamir, MD, PHARMD, RPHStudent in an Organized Health Care Education/Training Program1821890377
  2. Matthew AbadirAnesthesiology Physician1699120550
  3. Taimur AbbasiInternal Medicine Physician1841673522
  4. Megan Abbott, MDAnesthesiology Physician1730839333
  5. Moustafa AbdallaStudent in an Organized Health Care Education/Training Program1952046062
  6. Shadi Abdar Esfahani, MD, MPHDiagnostic Radiology Physician1497137590

Verify Lauren E. Dias 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 210535
    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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70% fewer Medicare Part D claims than the average hematology & oncology physician in 2024

262 Medicare Part D claims for 78 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. 38 claims were for opioids.

  1. Lauren Dias262
  2. Specialty average877

Most prescribed

  1. Oxycodone Hcl18 claims
  2. Prochlorperazine Maleate17 claims
  3. Dexamethasone16 claims
  4. Xarelto16 claims
  5. Eliquis12 claims
  6. Omeprazole11 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 2 group practices

  1. Massachusetts General Physicians Organization IncBoston, MA
  2. The General Hospital CorporationDanvers, MA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Lauren E. Dias among 461 hematology & oncology physician records in Massachusetts

Lauren E. Dias, 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 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 86% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 66% of these records are
  • Graduated1999 · median 2004 among the 303 with a school on file
  • Record last updated2012 · 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.

The 8 hematology & oncology physician records with the nearest ZIP codes

  1. Vassiliki Boussiotis, MD PHDBoston, MA 021141861474215
  2. Marcia Browne, MDBoston, MA 021141639146210
  3. George Canellos, MDBoston, MA 021141114908027
  4. Yi-Bin Chen, MDBoston, MA 021141356332639
  5. John ClarkBoston, MA 021141871550244
  6. Kira Gritsman, MDBoston, MA 021141174598148
  7. David HarmonBoston, MA 021141851358352
  8. Beverly Moy, MDBoston, MA 021141932199106

Common questions

What is Lauren E. Dias, MD's NPI number?

Lauren E. Dias, MD's National Provider Identifier (NPI) is 1215928346, issued on Oct 28, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Lauren E. Dias, MD located?

The NPPES record lists a practice address at 55 Fruit St, Boston, MA, 02114. Phone: (617) 724-7386. Providers update this record themselves, so call before visiting.

How can I verify Lauren E. Dias, MD's license?

NPPES lists Massachusetts license number 210535, 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 Lauren E. Dias, MD prescribe under Medicare Part D?

In 2024, Lauren E. Dias, MD had 262 Medicare Part D claims for 78 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.