Mark Pirner, MD
Internal Medicine Physician · Newtown, CT
Mark Pirner, MD is an internal medicine physician with a practice address in Newtown, Connecticut, and NPI 1538439690, issued on Jan 6, 2012. Check the license (Connecticut 52665, as entered in NPPES) on the Connecticut Medical Examining Board; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Mark Pirner
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 52665 CT
Self-reported in NPPES; status is on the state search - Practice location
- 1 Stony Brook RD, Newtown, CT 06470
- Phone
- (475) 323-7210
- Enumerated
- Jan 6, 2012
- Record last updated
- Apr 8, 2022
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,623 in Connecticut → Look up another NPI →
Verify Mark Pirner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 52665Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Mark Pirner among 2,623 internal medicine physician records in Connecticut
Mark Pirner, MD is one of 2,623 internal medicine physician records with a practice address in Connecticut. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2012, is newer than 67% of them.
- NPI issued2012 · 67% of these records are older, 30% newer
- In a Medicare fileNo · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2022 · 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 207R00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
6 internal medicine physician records list a practice address in Newtown
They are 6 of the 283 NPPES records with a practice address in Newtown, and 2,623 internal medicine physician records in Connecticut. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 2,623 in Connecticut → Every provider in Newtown → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jeffrey Friedman, MDNewtown, CT 064701023048899
- Jennifer Holloway, M.D.Newtown, CT 064701285601898
- Peter Licht, M.D.Newtown, CT 064701841267457
- Karin Michels-Ashwood, MDNewtown, CT 064701922072644
- Maria Urfer, M.D.Newtown, CT 064701255581427
- Rahat Sadar, M.DNorth Branford, CT 064711184913311
- Joseph Antonico, M.D.Monroe, CT 064681205830742
- Sekhar Chirunomula, MDMonroe, CT 064681891729760
Common questions
What is Mark Pirner, MD's NPI number?
Mark Pirner, MD's National Provider Identifier (NPI) is 1538439690, issued on Jan 6, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Mark Pirner, MD located?
The NPPES record lists a practice address at 1 Stony Brook RD, Newtown, CT, 06470. Phone: (475) 323-7210. Providers update this record themselves, so call before visiting.
How can I verify Mark Pirner, MD's license?
NPPES lists Connecticut license number 52665, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.