Harrison J. Pierce, MD
Pediatrics Physician · New Canaan, CT
Harrison J. Pierce, MD is a pediatrics physician with a practice address in New Canaan, Connecticut, and NPI 1801963756, issued on Nov 29, 2006. Check the license (Connecticut 017458, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Harrison J. Pierce
- Credential
- MD
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- 017458 CT
Self-reported in NPPES; status is on the state search - Practice location
- 173 East Avenue, New Canaan, CT 06840
- Phone
- (203) 972-4250
- Enumerated
- Nov 29, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (203) 801-2126
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 1,043 in Connecticut → Look up another NPI →
Also registered at 173 East Avenue
A shared address usually means a shared clinic or building; it does not show who employs whom.
- William Flynn, MDPediatrics Physician1679640460
- Eva Grunberg, MDPediatrics Physician1740357540
- Peter Hasapis, MDInternal Medicine Physician1720154354
- Alyssa Newman, MDPediatrics Physician1790852598
- Peter Shutkin, MDInternal Medicine Physician1598830234
- James Slater, MDInternal Medicine Physician1588713879
Verify Harrison J. Pierce in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 017458Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average pediatrics physician in 2024
11 Medicare Part D claims, against an average of 375 among the 5,609 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Harrison J. Pierce among 1,043 pediatrics physician records in Connecticut
Harrison J. Pierce, MD is one of 1,043 pediatrics physician records with a practice address in Connecticut. 32% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 45% newer
- In a Medicare fileYes · 32% of these records are
- In the CMS Doctors and Clinicians fileNo · 9% of these records are
- Record last updated2007 · 61% 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 Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
11 pediatrics physician records list a practice address in New Canaan
They are 11 of the 276 NPPES records with a practice address in New Canaan, and 1,043 pediatrics physician records in Connecticut.
All 1,043 in Connecticut → Every provider in New Canaan → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Kathleen Berchelmann, MDNew Canaan, CT 068401376565416
- Jason Davis, M.D.New Canaan, CT 068401467424606
- William Flynn, MDNew Canaan, CT 068401679640460
- Eva Grunberg, MDNew Canaan, CT 068401740357540
- Maria Ieni, MDNew Canaan, CT 068401265491245
- Rosemary Klenk, MDNew Canaan, CT 068401780692665
- Dorothy Levine, MDNew Canaan, CT 068401063420941
- Alan Morelli, MDNew Canaan, CT 068401609884584
Common questions
What is Harrison J. Pierce, MD's NPI number?
Harrison J. Pierce, MD's National Provider Identifier (NPI) is 1801963756, issued on Nov 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Harrison J. Pierce, MD located?
The NPPES record lists a practice address at 173 East Avenue, New Canaan, CT, 06840. Phone: (203) 972-4250. Providers update this record themselves, so call before visiting.
How can I verify Harrison J. Pierce, MD's license?
NPPES lists Connecticut license number 017458, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Harrison J. Pierce, MD prescribe under Medicare Part D?
In 2024, Harrison J. Pierce, MD had 11 Medicare Part D claims; the average among pediatrics physician prescribers was 375. Part D covers Medicare prescriptions only.
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.