Pierre-Olivier Grenier, M.D.
Pediatric Dermatology Physician · Boston, MA
Pierre-Olivier Grenier, M.D. is a pediatric dermatology physician with a practice address in Boston, Massachusetts, and NPI 1144881160, issued on Jun 21, 2019. Check the license (Massachusetts 293663, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Pierre-Olivier Grenier
- Credential
- M.D.
- Primary taxonomy
- Pediatric Dermatology Physician 207NP0225X
- License number
- 293663 MA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Longwood Avenue, Boston, MA 02115
- Phone
- (617) 355-6117
- Enumerated
- Jun 21, 2019
- Record last updated
- Aug 24, 2022
- Fax
- (617) 730-0308
- Medicare enrollment
- Enrolled (PECOS I20221101001417); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 300 Longwood Avenue
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Marc Ackerman, D.M.D.Orthodontics and Dentofacial Orthopedics Dentistry1790982593
- Osama Aglan, M.DStudent in an Organized Health Care Education/Training Program1275190548
- Omotola Ajayi, M.D.Student in an Organized Health Care Education/Training Program1619600400
- Reem Alahmadi, MBBSStudent in an Organized Health Care Education/Training Program1598578080
- Nadine AprahamianPediatrics Physician1033324207
- Rose Ashraf, PHDPsychologist1629676960
Verify Pierre-Olivier Grenier in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 293663Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Children's Hospital Pediatric Associates, IncPeabody, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Pediatric Dermatology Physician providers in Massachusetts
There are 17 pediatric dermatology physician records in Massachusetts.
Other pediatric dermatology physician records in Massachusetts
- Kristen Corey, MDBoston, MA1336587013
- Chantal Cotter, MB BCH BAOBoston, MA1013681675
- Sophia Delano, MD, MPPBoston, MA1881980365
- Stephen Gellis, MDBoston, MA1699873745
- Elena Hawryluk, M.D., PH.D.Boston, MA1275761496
- Tina Ho, MD, PHDBoston, MA1780112029
- Jennifer Huang, M.D.Boston, MA1457471112
- Sadaf Hussain, M.D.Boston, MA1295996999
- Marilyn Liang, M.D.Boston, MA1861430167
- Fiona LynchBoston, MA1841761053
Common questions
What is Pierre-Olivier Grenier, M.D.'s NPI number?
Pierre-Olivier Grenier, M.D.'s National Provider Identifier (NPI) is 1144881160, issued on Jun 21, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Pierre-Olivier Grenier, M.D. located?
The NPPES record lists a practice address at 300 Longwood Avenue, Boston, MA, 02115. Phone: (617) 355-6117. Providers update this record themselves, so call before visiting.
How can I verify Pierre-Olivier Grenier, M.D.'s license?
NPPES lists Massachusetts license number 293663, 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. 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.