John L. Maddox, MD
Pediatrics Physician · Wilmington, MA
John L. Maddox, MD is a pediatrics physician with a practice address in Wilmington, Massachusetts, and NPI 1801887229, issued on Nov 3, 2005. Check the license (Massachusetts 211906, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- John L. Maddox
- Credential
- MD
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- 211906 MA
Self-reported in NPPES; status is on the state search - Practice location
- 500 Salem St, Wilmington, MA 01887
- Phone
- (978) 988-6209
- Enumerated
- Nov 3, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (978) 988-6139
- Medicaid ID
- 0149110 MA
- Medicare enrollment
- Enrolled (PECOS I20191004002810); accepts Medicare assignment
- Medical or professional school
- University Of New Mexico School Of Medicine, 1998
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 2,628 in Massachusetts → Look up another NPI →
Also registered at 500 Salem St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sarah Andrew, MDPediatrics Physician1841281250
- Sara Barnes, AU.D.Audiologist-Hearing Aid Fitter1326398207
- Daniel Carson, MDPediatrics Physician1801887211
- Pamela Cote, R.D.,C.D.E.,L.D.Registered Dietitian1073637393
- Jessica Delaney-Sloper, ANPAdult Health Nurse Practitioner1992944995
- Haley Govoni, NPFamily Nurse Practitioner1679031959
Verify John L. Maddox in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 211906Check 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
- Mass General Brigham Medical Group Northern Massachusetts IncDanvers, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John L. Maddox among 2,628 pediatrics physician records in Massachusetts
John L. Maddox, 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 84% newer
- In a Medicare fileYes · 25% of these records are
- In the CMS Doctors and Clinicians fileYes · 12% of these records are
- Graduated1998 · median 2010 among the 319 with a school on file
- Record last updated2026 · 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).
7 pediatrics physician records list a practice address in Wilmington
They are 7 of the 443 NPPES records with a practice address in Wilmington, and 2,628 pediatrics physician records in Massachusetts.
All 2,628 in Massachusetts → Every provider in Wilmington → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Sarah Andrew, MDWilmington, MA 018871841281250
- Daniel Carson, MDWilmington, MA 018871801887211
- Gayathry Nene, D.OWilmington, MA 018871225487432
- Carolyn Sedor, MDWilmington, MA 018871609867027
- Sandy Stephens, MDWilmington, MA 018871225029648
- Normand Tanguay, MDWilmington, MA 018871568453983
- Brad Alpert, MDWestford, MA 018861245209873
- Andreas Athanasiou, MDWestford, MA 018861972590958
Common questions
What is John L. Maddox, MD's NPI number?
John L. Maddox, MD's National Provider Identifier (NPI) is 1801887229, issued on Nov 3, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John L. Maddox, MD located?
The NPPES record lists a practice address at 500 Salem St, Wilmington, MA, 01887. Phone: (978) 988-6209. Providers update this record themselves, so call before visiting.
How can I verify John L. Maddox, MD's license?
NPPES lists Massachusetts license number 211906, 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.