Katherine L. Martz, MD
Pediatric Critical Care Medicine Physician · Boston, MA
Katherine L. Martz, MD is a pediatric critical care medicine physician with a practice address in Boston, Massachusetts, and NPI 1043609373, issued on Jan 9, 2015. Check the license (Massachusetts 286862, 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
- Katherine L. Martz
- Credential
- MD
- Primary taxonomy
- Pediatric Critical Care Medicine Physician 2080P0203X
- License number
- 286862 MA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Longwood Ave, Boston, MA 02115
- Phone
- (617) 355-6000
- Enumerated
- Jan 9, 2015
- Record last updated
- Jun 10, 2025
- Medicare enrollment
- Enrolled (PECOS I20250616002565); may accept Medicare assignment
- Medical or professional school
- Johns Hopkins University School Of Medicine, 2018
- Entity
- Type 1 · individual
8 nearest pediatric critical care medicine physician records → All 121 in Massachusetts → Look up another NPI →
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 Katherine L. Martz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 286862Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Katherine L. Martz among 121 pediatric critical care medicine physician records in Massachusetts
Katherine L. Martz, MD is one of 121 pediatric critical care medicine physician records with a practice address in Massachusetts. 43% 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 2015, is newer than 70% of them.
- NPI issued2015 · 70% of these records are older, 21% newer
- In a Medicare fileNo · 43% of these records are
- In the CMS Doctors and Clinicians fileYes · 45% of these records are
- Graduated2018 · median 2010 among the 55 with a school on file
- Record last updated2025 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0203X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Critical Care Medicine Physician providers in Massachusetts
There are 121 pediatric critical care medicine physician records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 121 in Massachusetts → Every provider in Boston → Pediatric Critical Care Medicine Physician nationwide →
The 8 pediatric critical care medicine physician records with the nearest ZIP codes
- Michael Agus, MDBoston, MA 021151952382301
- Jeffrey Burns, MDBoston, MA 021151821065327
- Robert Graham, MDBoston, MA 021151699743682
- John Kheir, M.D.Boston, MA 021151659355279
- Peter Laussen, MDBoston, MA 021151073584967
- Benjamin Matthews, MDBoston, MA 021151851382436
- Robert Pascucci, MDBoston, MA 021151194793752
- Gregory Priebe, MDBoston, MA 021151285695387
Common questions
What is Katherine L. Martz, MD's NPI number?
Katherine L. Martz, MD's National Provider Identifier (NPI) is 1043609373, issued on Jan 9, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Katherine L. Martz, MD 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 Katherine L. Martz, MD's license?
NPPES lists Massachusetts license number 286862, 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.