Margaret O.p. Fallon, MD
Pediatrics Physician · Waltham, MA
Margaret O.p. Fallon, MD is a pediatrics physician with a practice address in Waltham, Massachusetts, and NPI 1780104968, issued on Jun 20, 2017. Check the license (Massachusetts 271340, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Margaret O.p. Fallon
- Credential
- MD
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- 271340 MA
Self-reported in NPPES; status is on the state search - Practice location
- 52 Second Ave, Waltham, MA 02451
- Phone
- (617) 726-2000
- Enumerated
- Jun 20, 2017
- Record last updated
- Apr 21, 2025
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 2,628 in Massachusetts → Look up another NPI →
Also registered at 52 Second Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rebecca Blake, PA-CPhysician Assistant1043700214
- Matthew Dimatteo, DNP, FNP-BCFamily Nurse Practitioner1992687149
- Natasha Edwards, FNPFamily Nurse Practitioner1942540737
- Brittany Hansen, MDInternal Medicine Physician1508515297
- Cristin LavitaPediatric Registered Nurse1154265726
- Michael VrolykPhysician Assistant1598222168
Verify Margaret O.p. Fallon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 271340Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $55.62
2 payments; by number, the most common kind was food and beverage; the largest payer was Corium, LLC. The 21,580 providers of this specialty with any payment received $842.05 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Margaret O.p. Fallon among 2,628 pediatrics physician records in Massachusetts
Margaret O.p. Fallon, MD is one of 2,628 pediatrics physician records with a practice address in Massachusetts. 25% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 84% of them.
- NPI issued2017 · 84% of these records are older, 13% newer
- In a Medicare fileYes · 25% of these records are
- In the CMS Doctors and Clinicians fileNo · 12% of these records are
- Record last updated2025 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatrics Physician providers in Massachusetts
There are 2,628 pediatrics physician records in Massachusetts.
All 2,628 in Massachusetts → Every provider in Waltham → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Peter Greenspan, MDWaltham, MA 024511295725885
- Beth McCabe, MDWaltham, MA 024511114908902
- Victoria McEvoy, MDWaltham, MA 024511568453181
- Stephen Nishiyama, MDWaltham, MA 024511710978622
- Myron Peterson, M.D.Waltham, MA 024511194868596
- Cynthia Sacco, M.D.Waltham, MA 024511164576237
- Jonathan Winickoff, MD MPHWaltham, MA 024511720049760
- Sarah Zimmerman, MDWaltham, MA 024511295861961
Common questions
What is Margaret O.p. Fallon, MD's NPI number?
Margaret O.p. Fallon, MD's National Provider Identifier (NPI) is 1780104968, issued on Jun 20, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Margaret O.p. Fallon, MD located?
The NPPES record lists a practice address at 52 Second Ave, Waltham, MA, 02451. Phone: (617) 726-2000. Providers update this record themselves, so call before visiting.
How can I verify Margaret O.p. Fallon, MD's license?
NPPES lists Massachusetts license number 271340, 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.