DR. CHRISTOPHER JENNINGS REGAN M.D.
NPI 1841468709
Internal Medicine - Cardiovascular Disease in New Haven, CT

Q: What is Christopher Regan's NPI number?

The NPI number for Christopher Regan is 1841468709. It was assigned to this individual provider in the NPPES registry on February 13, 2008.

Q: What is Christopher Regan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Q: When was this NPI record last updated?

The NPPES record for Christopher Regan was last updated on September 1, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since February 13, 2008PECOS EnrolledAccepts Medicare Assignment

93.27/100

CMS Quality Rating

333 CEDAR ST, DANA 3, NEW HAVEN, CT 06510(203) 785-4129 Get Directions Write a Review

NPPES record last updated: September 1, 2015. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Dr. Christopher Jennings Regan M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. CHRISTOPHER JENNINGS REGAN M.D. (NPI 1841468709) is an individual cardiovascular disease provider in New Haven, Connecticut, licensed in Connecticut (048552) and active in the NPI registry since February 2008. He is enrolled in Medicare PECOS, is affiliated with Westerly Hospital, and is a graduate of Virginia Commonwealth Univ School Of Dentistry (2007).

NPPES Registry Identity

NPI1841468709

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameDR. CHRISTOPHER JENNINGS REGANCredential: M.D.

Location Address333 CEDAR ST, DANA 3New Haven, CT 06510-3206

Mailing Address333 Cedar St, Dana 3New Haven, CT 06510-3206 · (203) 785-4129

Phone(203) 785-4129

Sole ProprietorYes

Medical School CMSVirginia Commonwealth Univ School Of DentistryGraduated 2007

Enumeration DateFebruary 13, 2008

Last NPPES UpdateSeptember 1, 2015

✔ NPI 1841468709 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

License✔ Licensed in CT · 048552

Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

Also ListedInternal MedicineTaxonomy 207R00000X · License 048552 (CT)

Also ListedInternal Medicine · Interventional CardiologyTaxonomy 207RI0011X · License 048552 (CT)

333 CEDAR ST, New Haven, CT 06510

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Christopher Jennings Regan M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7113041930

PECOS Enrollment IDI20100901000017, I20181114002886

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Christopher Regan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mill Hill Medical Consultants Inc

0.2 mi

Hospitalist

20 YORK ST, CB 2041
New Haven, CT 06510

Reassigned Medicare billing, Connecticut and Rhode Island enrollments
Medicare enrollment name: Northeast Medical Group Inc
Also billed through NPI 1043278351 (Rhode Island)
1,824 clinicians in this Medicare group

NPI 1952624769 (203) 688-4741

Yale University

0.3 mi

Advanced Practice Midwife

100 CHURCH ST S STE 200, YALE SCHOOL OF NURSING
New Haven, CT 06519

Reassigned Medicare billing, Connecticut enrollment
3,728 clinicians in this Medicare group

NPI 1124148887 (203) 737-5432

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 16

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

320 services208 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

151 services138 patients

Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes 99152

This procedure involves a doctor administering a medication to reduce your consciousness during a procedure. This helps in managing discomfort and anxiety. The initial application lasts for 15 minutes and is for individuals aged 5 years or older.

76 services65 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

57 services52 patients

Ultrasound of both sides of head and neck blood flow 93880

An ultrasound of the head and neck blood flow is a safe, non-invasive procedure that uses sound waves to create images of blood vessels. It helps detect abnormalities like blockages or clots, ensuring optimal blood flow.

40 services40 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

36 services30 patients

Insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist 93458

This procedure involves placing a tube into your left lower heart chamber and coronary artery. It helps doctors diagnose heart conditions by allowing them to view these areas in detail. A radiologist will review the images to ensure accurate diagnosis.

28 services28 patients

Smoking and tobacco use intensive counseling, 4-10 minutes 99406

This service provides brief, intensive counseling (4-10 minutes) to support you in quitting smoking or tobacco use. It involves discussing the risks of tobacco use, benefits of quitting, and strategies to help you stop. It's a critical step towards a healthier lifestyle.

26 services20 patients

Complete ultrasound study of arm and leg arteries 93923

This procedure involves using sound waves to produce images of your arm and leg arteries. It helps identify blockages or abnormalities that could lead to conditions like stroke or peripheral artery disease. It's non-invasive and painless.

17 services17 patients

Insertion of tube in coronary artery for diagnosis with review by radiologist 93454

This procedure involves placing a small tube into your coronary artery. It helps to identify any blockages or issues within the artery. A radiologist, a doctor specialized in medical imaging, will review the results to ensure accurate diagnosis.

16 services16 patients

Ultrasound study of arm or leg veins with compression and maneuvers 93970

An ultrasound study of arm or leg veins with compression and maneuvers is a non-invasive procedure that uses sound waves to create images of your veins. This helps identify blood clots or other vein problems. During the procedure, pressure is applied to the veins and certain movements are performed to assess blood flow.

16 services16 patients

Ultrasound evaluation of heart blood vessel or graft with review by radiologist, initial vessel 92978

This procedure involves using ultrasound technology to examine the first vessel of your heart or graft. A radiologist will review the images. It's a non-invasive way to check the health of your heart's blood vessels.

14 services13 patients

Ultrasound of leg arteries or artery grafts 93925

An ultrasound of leg arteries or artery grafts is a non-invasive imaging test. It uses high-frequency sound waves to capture live images from inside your body, specifically your leg arteries or grafts. This helps in detecting any blockages or abnormalities.

14 services14 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

12 services12 patients

Ultrasound study of arm and leg arteries 93922

An ultrasound study of arm and leg arteries is a non-invasive procedure that uses sound waves to create images of your arteries. It helps in checking blood flow, identifying blockages, or detecting other abnormalities in your arteries.

11 services11 patients

Complete ultrasound study of arm and leg arteries 93923

11 services11 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Westerly Hospital

Acute Care Hospitals · Westerly, RI

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number410013

Location25 Wells StreetWesterly, RI 02891 · Washington County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06510 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$138.84 typical visit price

range $60.82 – $183.10

Typical copayment $34.71 (range $15.20 – $45.77)

Most-billed visit code 99204

Established Patient

$75.55 typical visit price

range $19.76 – $149.26

Typical copayment $18.88 (range $4.94 – $37.31)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

93.27/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored through an Alternative Payment Model

Quality

81.72

Promoting Interoperability

78.03

Improvement Activities

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. BRIAN CHRISTOPHER CAMBI M.D.

Internal Medicine (Interventional Cardiology)

333 CEDAR ST, DCB 3
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 785-4129

MATTHEW JOSEPH MCCONNELL M.D.

Internal Medicine (Gastroenterology)

333 CEDAR ST, YNHH INTERNAL MEDICINE-GI,SECTION OF DIGESTIVE DISEASES
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 785-7012

DR. SRI SMITHA KANAPARTHY M.D.

Anesthesiology (Pediatric Anesthesiology)

333 CEDAR ST, TMP 3
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 785-2802

SUNDES KAZMIR M.D.

Student in an Organized Health Care Education/Training Program

333 CEDAR ST, YALE-NEW HAVEN HOSPITAL DEPARTMENT OF PEDIATRICS
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 688-1947

ANASTASIA KOPTELOVA MD

Anesthesiology

333 CEDAR ST
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 688-4242

ROBERT MCNAMARA MD

Internal Medicine (Cardiovascular Disease)

333 CEDAR ST, FMP 3
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 785-4127

DR. BRANDI PARKER COTTON APRN

Nurse Practitioner (Psychiatric/Mental Health)

333 CEDAR ST
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 432-1333

SARAH ELIZABETH SCHELLHORN MD

Internal Medicine (Medical Oncology)

333 CEDAR ST
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 785-4095

JACQUELYNE GADDY

Internal Medicine (Medical Oncology)

333 CEDAR ST
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 785-4095

DR. RENEE MICHELLE YOUNG DO

Anesthesiology

333 CEDAR ST, TOMKINS 3
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 785-2802

DR. MAXIMILIAN STAHL M.D.

Internal Medicine (Hematology & Oncology)

333 CEDAR ST
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 785-4095

DR. CHRISTOPHER BRUCE RANSOM MD, PHD

Psychiatry & Neurology (Clinical Neurophysiology)

333 CEDAR ST, LCI 712
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 785-4085

MRS. ANNEMARIE B. CURNIN CNM, DNP, MPH, MS

Advanced Practice Midwife

333 CEDAR ST
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 432-4771

DR. PHILIP PANG M.D.

Student in an Organized Health Care Education/Training Program

333 CEDAR ST, BOARDMAN 204
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (475) 209-6868

ANNALISA MORGAN MD

Psychiatry & Neurology (Neurology)

333 CEDAR ST
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 688-4242

DR. MICHAEL SIMONS M.D.

Internal Medicine (Cardiovascular Disease)

333 CEDAR ST
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 737-4643

DR. CHRISTOPHER THOMAS WHITLOW M.D./PH.D.

Radiology (Diagnostic Radiology)

333 CEDAR ST
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 785-6938

DR. PERRY CHOI MD

Radiology (Diagnostic Radiology)

333 CEDAR ST, YALE RADIOLOGY DEPARTMENT
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 785-5913

ANGELA JENNY LUO

Student in an Organized Health Care Education/Training Program

333 CEDAR ST
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (484) 832-3251

MARIANNA FREUDZON MD

Dermatology

333 CEDAR ST, YUSM DEPARTMENT OF DERMATOLOGY
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 785-4632

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Christopher Regan's NPI number?

The NPI number for Christopher Regan is 1841468709. It was assigned to this individual provider in the NPPES registry on February 13, 2008.

Where is Christopher Regan located?

Christopher Regan practices at 333 Cedar St Dana 3, New Haven, CT 06510. The listed phone number is (203) 785-4129.

What is Christopher Regan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Christopher Regan enrolled in Medicare?

Yes. Christopher Regan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Christopher Regan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Christopher Regan reassigns Medicare benefits to 2 organizations: Mill Hill Medical Consultants Inc (New Haven, CT) and Yale University (New Haven, CT). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Christopher Regan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Christopher Regan affiliated with any hospitals?

According to CMS data, Christopher Regan is affiliated with Westerly Hospital.

When was this NPI record last updated?

The NPPES record for Christopher Regan was last updated on September 1, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.