NPPES file of Aug 9, 2026

Holcombe E. Grier, MD

Pediatric Hematology & Oncology Physician · Boston, MA

Holcombe E. Grier, MD is a pediatric hematology & oncology physician with a practice address in Boston, Massachusetts, and NPI 1295702793, issued on Mar 2, 2006. Check the license (Massachusetts 48511, 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
1295702793
Name
Holcombe E. Grier
Credential
MD
Primary taxonomy
Pediatric Hematology & Oncology Physician 2080P0207X
License number
48511 MA
Self-reported in NPPES; status is on the state search
Practice location
44 Binney St, Boston, MA 02115
Phone
(617) 632-3971
Enumerated
Mar 2, 2006
Record last updated
Aug 14, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(617) 632-5710
Medicaid ID
3012735 MA
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 pediatric hematology & oncology physician records → All 197 in Massachusetts → Look up another NPI →

Also registered at 44 Binney St

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

  1. Karim Abou-Nassar, MDHematology & Oncology Physician1366770745
  2. Janet Abrahm, MDMedical Oncology Physician1427024264
  3. Thomas Abrams, M.D.Medical Oncology Physician1184693947
  4. Christine Agius, RN, MSN, NP-C, RNCAdult Health Nurse Practitioner1932114790
  5. Laura Aguilar, MD PHDPediatric Hematology & Oncology Physician1295786598
  6. Zi Yazan Alabed, M.D., PH.D.Student in an Organized Health Care Education/Training Program1184046583

Verify Holcombe E. Grier 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 48511    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

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Holcombe E. Grier among 197 pediatric hematology & oncology physician records in Massachusetts

Holcombe E. Grier, MD is one of 197 pediatric hematology & oncology physician records with a practice address in Massachusetts. 42% 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 2006, is newer than 3% of them.

  • NPI issued2006 · 3% of these records are older, 58% newer
  • In a Medicare fileNo · 42% of these records are
  • In the CMS Doctors and Clinicians fileNo · 28% of these records are
  • Record last updated2007 · 65% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0207X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Pediatric Hematology & Oncology Physician providers in Massachusetts

There are 197 pediatric hematology & oncology physician records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 197 in Massachusetts → Every provider in Boston → Pediatric Hematology & Oncology Physician nationwide →

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

  1. Elly Barry, MDBoston, MA 021151740257427
  2. Susan Chi, MDBoston, MA 021151154398964
  3. Alan Dandrea, MDBoston, MA 021151174599930
  4. Kimberly Davies, MDBoston, MA 021151487621199
  5. Andrew Kung, MD PHDBoston, MA 021151720053580
  6. Jennifer Mack, MD MPHBoston, MA 021151225006398
  7. Alan Michelson, M.D.Boston, MA 021151760464994
  8. Sung Yun Pai, MDBoston, MA 021151497723647

Common questions

What is Holcombe E. Grier, MD's NPI number?

Holcombe E. Grier, MD's National Provider Identifier (NPI) is 1295702793, issued on Mar 2, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Holcombe E. Grier, MD located?

The NPPES record lists a practice address at 44 Binney St, Boston, MA, 02115. Phone: (617) 632-3971. Providers update this record themselves, so call before visiting.

How can I verify Holcombe E. Grier, MD's license?

NPPES lists Massachusetts license number 48511, 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.