Dr. Thomas C. Johnston, MD
- Industry payments
- $918
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2005
- Practice address
- 51 Mill St, Hanover, MA 02339
- Practice phone
- Call (781) 803-2786
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Healthcare South - Pediatrics - Hanover
Multi-specialty group site · Hanover, Massachusetts
Find Dr. Johnston'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. Thomas C. Johnston is a pediatrician in Methuen, Massachusetts
Dr. Johnston practices at Healthcare South - Pediatrics - Hanover in Hanover, Massachusetts.
Dr. Johnston's NPI, 1073504445, was assigned on November 3, 2005. Dr. Johnston holds Massachusetts license 50326.
- NPI
- 1073504445NPI Registry (opens in a new tab)
- NPI enumeration date
- November 3, 2005
- NPI status
- Active
- Practice phone
- (781) 803-2786
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Thomas C. Johnston practices in Hanover and Methuen
Dr. Johnston's primary practice is Healthcare South - Pediatrics - Hanover, at 51 Mill St, Hanover, MA 02339. The practice phone is (781) 803-2786. The NPI Registry lists Dr. Johnston's practice address as 70 East St, Methuen, MA 01844.
- Healthcare South - Pediatrics - HanoverPrimary51 Mill St, Hanover, MA 02339Phone(781) 803-2786
- NPI Registry address70 East St, Methuen, MA 01844 · Essex CountyPhone(781) 826-2131
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Thomas C. Johnston is affiliated with 1 site of care and 1 medical group
Dr. Johnston's primary practice is Healthcare South - Pediatrics - Hanover in Hanover, Massachusetts. The medical group on file is Healthcare South, P.C.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Thomas C. Johnston's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johnston practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Healthcare South - Pediatrics - Hanover | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Thomas C. Johnston is one of 2,101 pediatricians in Massachusetts
Pediatrics is Dr. Johnston's primary specialty in the NPI Registry, under taxonomy code 208000000X. Dr. Johnston is licensed in Massachusetts.
Specialties and state licenses
- Pediatrics, MassachusettsPrimary
Pediatricians near Dr. Johnston
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. Thomas C. Johnston's patients have a median age of 21
Across all payers, Dmand AI patient panel data puts Dr. Johnston's median patient age at 21, with 48% women.
Dr. Johnston's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 21
Patient panel by sex, all payers
- Women48%
- Men52%
Source: Dmand AI Patient Panel Data
Dr. Thomas C. Johnston received $918 in industry payments from 2016 to 2022
CMS Open Payments shows 50 general payments to Dr. Johnston from 17 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 100% of the total. Tris Pharma Inc paid the most, $163.
General payments to Dr. Johnston by program year, 2016 to 2022
Companies that paid Dr. Johnston the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Thomas C. Johnston'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 Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Thomas C. Johnston
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. Thomas C. Johnston's NPI number?
Dr. Thomas C. Johnston's NPI number is 1073504445. It was assigned on November 3, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Thomas C. Johnston?
Dr. Thomas C. Johnston is a pediatrician in Methuen, Massachusetts. The primary specialty in the NPI Registry is Pediatrics Physician (taxonomy code 208000000X).
Where does Dr. Thomas C. Johnston practice?
Dr. Johnston practices at 51 Mill St, Hanover, MA 02339. Dr. Johnston also practices at 70 East St, Methuen, MA 01844. Dr. Johnston's primary practice is Healthcare South - Pediatrics - Hanover in Hanover, Massachusetts.
What is Dr. Thomas C. Johnston's office phone number?
The practice phone on file for Dr. Johnston is (781) 803-2786.
What is Dr. Thomas C. Johnston's medical license number?
Dr. Johnston holds Massachusetts license 50326.
What medical group is Dr. Thomas C. Johnston part of?
Dr. Johnston is linked to Healthcare South, P.C.
Has Dr. Thomas C. Johnston received payments from drug or device companies?
CMS Open Payments shows $918 in general payments to Dr. Johnston from 17 companies from 2016 to 2022. The largest total came from Tris Pharma Inc.
How long has Dr. Thomas C. Johnston been practicing?
Dr. Johnston's NPI was assigned in 2005.
Selling to pediatrics practices?
See pediatricians in Massachusetts by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card