Christopher Jennings Regan, M.D.
Cardiovascular Disease Physician · New Haven, CT
Christopher Jennings Regan, M.D. is a cardiovascular disease physician with a practice address in New Haven, Connecticut, and NPI 1841468709, issued on Feb 13, 2008. Check the license (Connecticut 048552, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Christopher Jennings Regan
- Credential
- M.D.
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- 048552 CT
Self-reported in NPPES; status is on the state search - Practice location
- 333 Cedar St, New Haven, CT 06510
- Phone
- (203) 785-4129
- Enumerated
- Feb 13, 2008
- Record last updated
- Sep 1, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100901000017); accepts Medicare assignment
- Medical or professional school
- Virginia Commonwealth Univ School Of Dentistry, 2007
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 503 in Connecticut → Look up another NPI →
Also registered at 333 Cedar St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ghaith Abdulkarim, M.D.Critical Care Medicine (Anesthesiology) Physician1295021236
- Clara Abraham, MDGastroenterology Physician1629139456
- Aymen Alian, M.B.B.CH, M.D.Anesthesiology Physician1386803740
- Robert Alpern, MDNephrology Physician1477785285
Verify Christopher Jennings Regan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 048552Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
17% more Medicare Part D claims than the average cardiovascular disease physician in 2024
3,601 Medicare Part D claims for 504 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Atorvastatin Calcium480 claims
- Eliquis235 claims
- Metoprolol Succinate229 claims
- Rosuvastatin Calcium221 claims
- Lisinopril219 claims
- Amlodipine Besylate204 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 73.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Northeast Medical Group IncNew London, CT
- Yale UniversityGuilford, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Christopher Jennings Regan among 503 cardiovascular disease physician records in Connecticut
Christopher Jennings Regan, M.D. is one of 503 cardiovascular disease physician records with a practice address in Connecticut. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 64% of them.
- NPI issued2008 · 64% of these records are older, 31% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2007 · median 2000 among the 348 with a school on file
- Record last updated2015 · 71% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
96 cardiovascular disease physician records list a practice address in New Haven
They are 96 of the 9,793 NPPES records with a practice address in New Haven, and 503 cardiovascular disease physician records in Connecticut.
All 503 in Connecticut → Every provider in New Haven → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Hyung Chun, MDNew Haven, CT 065101699852541
- Keith Churchwell, MDNew Haven, CT 065101336151273
- Nihar Desai, M.D, MPHNew Haven, CT 065101700930120
- Kumar Dharmarajan, MD, MBANew Haven, CT 065101083741441
- Daniel JacobyNew Haven, CT 065101518092691
- Harlan Krumholz, MDNew Haven, CT 065101699764480
- Christopher LoscalzoNew Haven, CT 065101265443519
- Robert McNamara, MDNew Haven, CT 065101033119524
Common questions
What is Christopher Jennings Regan, M.D.'s NPI number?
Christopher Jennings Regan, M.D.'s National Provider Identifier (NPI) is 1841468709, issued on Feb 13, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Christopher Jennings Regan, M.D. located?
The NPPES record lists a practice address at 333 Cedar St, New Haven, CT, 06510. Phone: (203) 785-4129. Providers update this record themselves, so call before visiting.
How can I verify Christopher Jennings Regan, M.D.'s license?
NPPES lists Connecticut license number 048552, 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 Christopher Jennings Regan, M.D. prescribe under Medicare Part D?
In 2024, Christopher Jennings Regan, M.D. had 3,601 Medicare Part D claims for 504 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. Part D covers Medicare prescriptions only.
What is Christopher Jennings Regan, M.D.'s MIPS final score?
The 2023 MIPS final score is 73.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.