Dr. Harrison J. Pierce, MD
- Part D claims, 2024
- 11
- Industry payments
- $101
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 173 East Avenue, New Canaan, CT 06840
- Practice phone
- Call (203) 972-4255
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
New Canaan Internal Medicine - New Canaan
Primary care practice · New Canaan, Connecticut
Find Dr. Pierce'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. Harrison J. Pierce is a pediatrician in New Canaan, Connecticut
Dr. Pierce practices at New Canaan Internal Medicine - New Canaan in New Canaan, Connecticut.
Dr. Pierce's NPI, 1801963756, was assigned on November 29, 2006. Dr. Pierce holds Connecticut license 017458.
- NPI
- 1801963756NPI Registry (opens in a new tab)
- NPI enumeration date
- November 29, 2006
- NPI status
- Active
- Practice phone
- (203) 972-4255
- 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. Harrison J. Pierce practices at New Canaan Internal Medicine - New Canaan in New Canaan, Connecticut
Dr. Pierce's primary practice is New Canaan Internal Medicine - New Canaan, at 173 East Avenue, New Canaan, CT 06840. The practice phone is (203) 972-4255.
- New Canaan Internal Medicine - New Canaan173 East Avenue, New Canaan, CT 06840Phone(203) 972-4255
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Harrison J. Pierce is affiliated with 1 site of care and 1 medical group
Dr. Pierce's primary practice is New Canaan Internal Medicine - New Canaan in New Canaan, Connecticut. Dmand AI also links Dr. Pierce to 1 medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Harrison J. Pierce's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Pierce practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| New Canaan Internal Medicine - New Canaan | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Harrison J. Pierce is one of 788 pediatricians in Connecticut
Pediatrics is Dr. Pierce's primary specialty in the NPI Registry, under taxonomy code 208000000X. Dr. Pierce is licensed in Connecticut.
Specialties and state licenses
- Pediatrics, ConnecticutPrimary
Pediatricians near Dr. Pierce
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. Harrison J. Pierce's patients have a median age of 27
Across all payers, Dmand AI patient panel data puts Dr. Pierce's median patient age at 27, with 40% women.
Dr. Pierce's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 27
Patient panel by sex, all payers
- Women40%
- Men60%
Source: Dmand AI Patient Panel Data
Dr. Harrison J. Pierce wrote 11 Medicare Part D claims in 2024
In 2024, Dr. Pierce wrote 11 Medicare Part D claims. 100% of them were for generic drugs.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Harrison J. Pierce received $101 in industry payments in 2016
CMS Open Payments shows 7 general payments to Dr. Pierce from 3 drug and device companies in 2016. Food and beverage make up the largest share, 100% of the total. Pfizer Inc. paid the most, $71.
Companies that paid Dr. Pierce the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Harrison J. Pierce'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 | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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 |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| 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. Harrison J. Pierce
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. Harrison J. Pierce's NPI number?
Dr. Harrison J. Pierce's NPI number is 1801963756. It was assigned on November 29, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Harrison J. Pierce?
Dr. Harrison J. Pierce is a pediatrician in New Canaan, Connecticut. The primary specialty in the NPI Registry is Pediatrics Physician (taxonomy code 208000000X).
Where does Dr. Harrison J. Pierce practice?
Dr. Pierce practices at 173 East Avenue, New Canaan, CT 06840. Dr. Pierce's primary practice is New Canaan Internal Medicine - New Canaan in New Canaan, Connecticut. Dmand AI also links Dr. Pierce to 1 medical group.
What is Dr. Harrison J. Pierce's office phone number?
The practice phone on file for Dr. Pierce is (203) 972-4255.
What is Dr. Harrison J. Pierce's medical license number?
Dr. Pierce holds Connecticut license 017458.
Has Dr. Harrison J. Pierce received payments from drug or device companies?
CMS Open Payments shows $101 in general payments to Dr. Pierce from 3 companies from 2016 to 2016. The largest total came from Pfizer Inc.
How long has Dr. Harrison J. Pierce been practicing?
Dr. Pierce's NPI was assigned in 2006.
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