Grace K. Mahowald, MD, PHD
Clinical Pathology Physician · Boston, MA
Grace K. Mahowald, MD, PHD is a clinical pathology physician with a practice address in Boston, Massachusetts, and NPI 1659665685, issued on Jun 7, 2011. Check the license (Massachusetts L-247754, 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
- Grace K. Mahowald
- Credential
- MD, PHD
- Primary taxonomy
- Clinical Pathology Physician 207ZC0006X
- License number
- L-247754 MA
Self-reported in NPPES; status is on the state search - Practice location
- Massachusetts General Hospital, Boston, MA 02114
- Phone
- (617) 726-2865
- Enumerated
- Jun 7, 2011
- Record last updated
- Jul 21, 2026
- Entity
- Type 1 · individual
Also registered at Massachusetts General Hospital
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Grace K. Mahowald in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license L-247754Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Clinical Pathology Physician providers in Massachusetts
There are 40 clinical pathology physician records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
Other clinical pathology physician records in Massachusetts
- Melis Anahtar, MD, PHDBoston, MA1073033270
- Sankha Basu, M.D., PH.DBoston, MA1982028379
- Phoenix BellBoston, MA1235668641
- Allen Bryan, M.D., PH.D.Boston, MA1417214701
- Allison Carey, MD, PHDBoston, MA1891055844
- Mischa Covington, MD, PHDBoston, MA1063049997
- Gandhar DatarBoston, MA1396688024
- Daniel Ditoro, MD, PHDBoston, MA1376101758
- Jeffrey Gagan, M.D./PH.D.Boston, MA1265835839
- Georg Gerber, M.D., PH.D.Boston, MA1083856645
Common questions
What is Grace K. Mahowald, MD, PHD's NPI number?
Grace K. Mahowald, MD, PHD's National Provider Identifier (NPI) is 1659665685, issued on Jun 7, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Grace K. Mahowald, MD, PHD located?
The NPPES record lists a practice address at Massachusetts General Hospital, Boston, MA, 02114. Phone: (617) 726-2865. Providers update this record themselves, so call before visiting.
How can I verify Grace K. Mahowald, MD, PHD's license?
NPPES lists Massachusetts license number L-247754, 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.