Dr. John L. Maddox, MD
- Hospital affiliations
- 1
- Industry payments
- $26
- Medical groups
- 2
- State license
- 1
- Year NPI issued
- 2005
- Practice address
- 81 Highland Ave, Salem, MA 01970
- Practice phone
- Call (978) 354-2065
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
MGB Salem Hospital
Salem, Massachusetts
Find Dr. Maddox's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. John L. Maddox is a pediatrician in Salem, Massachusetts
Dr. Maddox practices at MGB Salem Hospital in Salem, Massachusetts.
Dr. Maddox's NPI, 1801887229, was assigned on November 3, 2005. Dr. Maddox graduated from University of New Mexico School of Medicine in 1998. Dr. Maddox holds Massachusetts license 211906.
- NPI
- 1801887229NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5698006609
- NPI enumeration date
- November 3, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (978) 354-2065
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John L. Maddox practices at MGB Salem Hospital in Salem, Massachusetts
Dr. Maddox's primary practice is MGB Salem Hospital, at 81 Highland Ave, Salem, MA 01970 in Essex County. The practice phone is (978) 354-2065.
- MGB Salem Hospital81 Highland Ave, Salem, MA 01970 · Essex CountyPhone(978) 354-2065
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. John L. Maddox is affiliated with 2 sites of care and 2 medical groups
Dr. Maddox's primary practice is MGB Salem Hospital in Salem, Massachusetts. Dr. Maddox is also affiliated with Salem Hospital. The medical group on file is Mass General Brigham (formerly North Shore Physicians Group). Dmand AI also links Dr. Maddox to 1 more medical group, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John L. Maddox's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Maddox practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| MGB Salem Hospital | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John L. Maddox is one of 2,101 pediatricians in Massachusetts
Pediatrics is Dr. Maddox's primary specialty in the NPI Registry, under taxonomy code 208000000X. Dr. Maddox is licensed in Massachusetts.
Specialties and state licenses
- Pediatrics, MassachusettsPrimary
Pediatricians near Dr. Maddox
Counts of pediatricians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. John L. Maddox's patients have a median age of 14
Across all payers, Dmand AI patient panel data puts Dr. Maddox's median patient age at 14, with 26% women.
Dr. Maddox's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 14
Patient panel by sex, all payers
- Women26%
- Men73%
Source: Dmand AI Patient Panel Data
How Dr. John L. Maddox takes part in Medicare
Dr. Maddox accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
Dr. John L. Maddox received $26 in industry payments in 2023
CMS Open Payments shows 1 general payment to Dr. Maddox from 1 drug or device company in 2023. Food and beverage make up the largest share, 100% of the total. Coala Life Inc paid the most, $26.
Companies that paid Dr. Maddox the most, 2023 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John L. Maddox graduated from University of New Mexico School of Medicine
Dr. Maddox graduated from University of New Mexico School of Medicine in 1998.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John L. Maddox's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. John L. Maddox
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. John L. Maddox's NPI number?
Dr. John L. Maddox's NPI number is 1801887229. It was assigned on November 3, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. John L. Maddox?
Dr. John L. Maddox is a pediatrician in Salem, Massachusetts. The primary specialty in the NPI Registry is Pediatrics Physician (taxonomy code 208000000X).
Where does Dr. John L. Maddox practice?
Dr. Maddox practices at 81 Highland Ave, Salem, MA 01970. Dr. Maddox's primary practice is MGB Salem Hospital in Salem, Massachusetts. Dmand AI also links Dr. Maddox to 1 medical group.
What is Dr. John L. Maddox's office phone number?
The practice phone on file for Dr. Maddox is (978) 354-2065.
What is Dr. John L. Maddox's medical license number?
Dr. Maddox holds Massachusetts license 211906.
Which hospitals is Dr. John L. Maddox affiliated with?
Dr. Maddox is affiliated with Salem Hospital.
What medical group is Dr. John L. Maddox part of?
Dr. Maddox is linked to Mass General Brigham (formerly North Shore Physicians Group). Dmand AI links Dr. Maddox to 1 more medical group.
Does Dr. John L. Maddox accept Medicare?
Yes. CMS lists Dr. Maddox as accepting Medicare assignment.
Where did Dr. John L. Maddox go to medical school?
Dr. Maddox graduated from University of New Mexico School of Medicine in 1998.
Has Dr. John L. Maddox received payments from drug or device companies?
CMS Open Payments shows $26 in general payments to Dr. Maddox from 1 company from 2023 to 2023. The largest total came from Coala Life Inc.
How long has Dr. John L. Maddox been practicing?
Dr. Maddox graduated from medical school in 1998, 28 years ago.
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