Loren David Walensky, MD PHD
Pediatric Hematology & Oncology Physician · Boston, MA
Loren David Walensky, MD PHD is a pediatric hematology & oncology physician with a practice address in Boston, Massachusetts, and NPI 1508896853, issued on Jul 3, 2006. Check the license (Massachusetts 204839, 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.
- Name
- Loren David Walensky
- Credential
- MD PHD
- Primary taxonomy
- Pediatric Hematology & Oncology Physician 2080P0207X
- License number
- 204839 MA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Longwood Ave, Boston, MA 02115
- Phone
- (617) 355-6000
- Enumerated
- Jul 3, 2006
- Record last updated
- May 18, 2026
- Medicaid ID
- 2000971 MA
- Entity
- Type 1 · individual
Also registered at 300 Longwood Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sylvia Abadir, MDPediatric Cardiology Physician1427366459
- Isabel Abbott, MDNeurology with Special Qualifications in Child Neurology Physician1033772579
- Kristin Abdelnour, PTPhysical Therapist1982821302
- Mohamed Abdelrahman, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1558050591
- Nadia Abdulrazak, N.P.Adult Health Nurse Practitioner1952616682
- Dhatri AbeyaratneStudent in an Organized Health Care Education/Training Program1437098233
Verify Loren David Walensky in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 204839Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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.
Other pediatric hematology & oncology physician records in Massachusetts
- Denise Adams, MDBoston, MA1841362399
- Suneet Agarwal, M.D.Boston, MA1225096456
- Laura Aguilar, MD PHDBoston, MA1295786598
- Ana Aguilar-Bonilla, M.D.Boston, MA1023319761
- Natasha Archer, MDBoston, MA1346376779
- Steven ArkinCambridge, MA1558179440
- Scott Armstrong, MD, PHDBoston, MA1962462267
- Pratiti Bandopadhayay, M.DBoston, MA1992086664
- Elly Barry, MDBoston, MA1740257427
- Daniel Bauer, MD, PHDBoston, MA1265609549
Common questions
What is Loren David Walensky, MD PHD's NPI number?
Loren David Walensky, MD PHD's National Provider Identifier (NPI) is 1508896853, issued on Jul 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Loren David Walensky, MD PHD located?
The NPPES record lists a practice address at 300 Longwood Ave, Boston, MA, 02115. Phone: (617) 355-6000. Providers update this record themselves, so call before visiting.
How can I verify Loren David Walensky, MD PHD's license?
NPPES lists Massachusetts license number 204839, 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.
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.