DR. GREGORY DAVID GERSTEN MD
NPI 1487688214
Radiology - Diagnostic Radiology in Southbury, CT

Q: What is Gregory Gersten's NPI number?

The NPI number for Gregory Gersten is 1487688214. It was assigned to this individual provider in the NPPES registry on July 10, 2006.

Q: What is Gregory Gersten's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Q: When was this NPI record last updated?

The NPPES record for Gregory Gersten was last updated on August 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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 July 10, 2006PECOS EnrolledAccepts Medicare Assignment

385 MAIN ST S, UNION SQUARE, SOUTHBURY, CT 06488(203) 264-7999(203) 264-7477 Get Directions Write a Review

NPPES record last updated: August 7, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Aug 7, 2026, Jan 14, 2026, Jun 17, 2021 (3 updates tracked since 2021).

On this page

About Dr. Gregory David Gersten Md NPPES

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

DR. GREGORY DAVID GERSTEN MD (NPI 1487688214) is an individual diagnostic radiology provider in Southbury, Connecticut, licensed in Connecticut (036955) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Phoebe Putney Memorial Hospital, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1487688214

Entity TypeIndividualMale

Primary Taxonomy2085R0202X

Provider Legal NameDR. GREGORY DAVID GERSTENCredential: MD

Location Address385 MAIN ST S, UNION SQUARESouthbury, CT 06488-4240

Mailing Address385 Main St S, Union Square Bldg #1 C O Nvra Imaging NetworkSouthbury, CT 06488-4240 · (203) 264-7999 · Fax (203) 264-7477

Phone(203) 264-7999

Fax(203) 264-7477

Sole ProprietorNo

Medical School CMSColumbia University College Of Physicians And SurgeonsGraduated 1990

Enumeration DateJuly 10, 2006

Last NPPES UpdateAugust 7, 20263 updates tracked since enumeration

NPPES CertifiedAugust 7, 2026

✔ NPI 1487688214 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0202X

Licenses✔ Licensed in CT · 036955✔ Licensed in ID · 4271297✔ Licensed in ND · 24716

Definition

A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.

Also ListedRadiology · Body ImagingTaxonomy 2085B0100X · License 036955 (CT)

Also ListedRadiology · Vascular & Interventional RadiologyTaxonomy 2085R0204X · License 036955 (CT)

385 MAIN ST S, Southbury, CT 06488

Open in Google Maps ↗

Secondary Practice Locations 2

Location 13000 32nd Ave SFargo, ND 58103-6132 · Phone (701) 364-8000

Location 21055 N Curtis RdBoise, ID 83706-1309 · Phone (208) 367-4320 · Fax (208) 367-6177

Other Identifiers 1

Medicaid001369554CT

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company, Priority Health.Insurance ›

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. Gregory David Gersten Md 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 ID2668379066

PECOS Enrollment IDI20250306000073, I20250528003071, I20260127002908

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 Gregory Gersten reassigns Medicare billing to 11 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Diagnostic Imaging Of Southbury

1.2 mi

Radiology

385 MAIN ST SOUTH, NVRA UNION SQUARE BLDG 2
Southbury, CT 06488

Reassigned Medicare billing, Connecticut enrollment
22 clinicians in this Medicare group

NPI 1245252824 (203) 264-7999

Diagnostic Imaging Associates LLC

8.8 mi

Radiology

1389 WEST MAIN STREET
Waterbury, CT 06708

Reassigned Medicare billing, Connecticut enrollment
19 clinicians in this Medicare group

NPI 1336161918 (203) 574-1311

Naugatuck Valley Mri LLC

8.8 mi

Diagnostic Radiology

1389 W MAIN ST
Waterbury, CT 06708

Reassigned Medicare billing, Connecticut enrollment
18 clinicians in this Medicare group

NPI 1134141716 (203) 574-1311

Naugatuck Valley Radiological Associates PC

10 mi

Diagnostic Radiology

56 FRANKLIN ST
Waterbury, CT 06706

Reassigned Medicare billing, Connecticut enrollment
16 clinicians in this Medicare group

NPI 1114949799 (203) 264-7999

Prospect Diagnostic Imaging

12 mi

Radiology

166 WATERBURY ROAD, RTE 69
Prospect, CT 06712

Reassigned Medicare billing, Connecticut enrollment
18 clinicians in this Medicare group

NPI 1154343739 (203) 758-7700

Scranton Hospitalist Physician Services LLC

127 mi

Diagnostic Radiology

746 JEFFERSON AVE, 4TH FLOOR
Scranton, PA 18510

Reassigned Medicare billing, Pennsylvania enrollment
68 clinicians in this Medicare group

NPI 1023317849 (570) 340-5079

Dlp Marquette Physician Practices Inc

754 mi

Family Medicine

2002 MINNEAPOLIS AVE
Gladstone, MI 49837

Reassigned Medicare billing, Michigan enrollment
440 clinicians in this Medicare group

NPI 1053667550 (906) 428-1856

Phoebe Family Medicine,coffee County

872 mi

Clinic/Center

200 DOCTORS DR, STE 224
Douglas, GA 31533

Reassigned Medicare billing, Georgia enrollment
Medicare enrollment name: Phoebe Physician Group Inc
1,118 clinicians in this Medicare group

NPI 1477997278 (912) 384-2353

Phoebe Cancer Center Surgical Oncology

913 mi

Surgical Oncology

409 W 4TH AVE
Albany, GA 31701

Reassigned Medicare billing, Georgia enrollment
Medicare enrollment name: Phoebe Putney Memorial Hospital, Inc.
264 clinicians in this Medicare group

NPI 1316193626 (229) 312-5080

Innovis Health, LLC.

1,209 mi

Family Medicine

275 11TH ST S
Wahpeton, ND 58075

Reassigned Medicare billing, North Dakota enrollment
617 clinicians in this Medicare group

NPI 1790965440 (701) 642-2000

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 34

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.

Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml Q9967

Low osmolar contrast material with 300-399 mg/ml iodine concentration is a diagnostic tool used in imaging procedures. It helps to enhance the visibility of specific areas in the body, aiding in accurate diagnosis. It's safe and generally well-tolerated by patients.

2,220 services21 patients

X-ray of chest, 1 view 71045

A chest X-ray, 1 view, is a quick, painless test that produces images of the structures within your chest, such as your heart, lungs, and blood vessels. It helps in diagnosing conditions like pneumonia, heart problems, or lung cancer. You'll stand in front of a machine that emits X-rays, which pass through your body to create the image.

267 services214 patients

Ct scan head or brain without contrast 70450

A CT scan of the head or brain without contrast is a non-invasive imaging procedure. It uses X-rays to create detailed pictures of your brain, skull, and other structures inside your head. It helps to detect conditions like strokes, tumors, or injuries. No dye (contrast) is used in this test.

134 services129 patients

X-ray of chest, 2 views 71046

A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.

130 services123 patients

Ct scan of abdomen and pelvis with contrast 74177

A CT scan of the abdomen and pelvis with contrast is an imaging procedure. A special dye, called contrast, is used to make certain areas more visible. This can help identify issues such as infections, tumors, or other abnormalities. The procedure is painless and usually takes about 30 minutes.

100 services99 patients

Ultrasound study of one arm or leg veins with compression and maneuvers 93971

This is a non-invasive procedure using sound waves to visualize veins in an arm or leg. It involves applying gentle pressure and performing certain movements. It helps identify any abnormal blood flow or clots, ensuring vascular health.

47 services19 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

35 services17 patients

Fluoroscopic guidance for insertion or removal of central vein access device 77001

Fluoroscopic guidance for central vein access device insertion or removal is a procedure where a special X-ray, called a fluoroscope, is used to help accurately place or remove a device in a central vein. This device aids in delivering medications or collecting blood samples.

33 services33 patients

X-ray of abdomen, 1 view 74018

An X-ray of the abdomen, 1 view, is a quick and painless imaging test. It uses a small amount of radiation to produce images of the structures in your abdomen, such as the stomach, liver, and intestines. This can help identify issues like blockages, infections, or injuries.

30 services26 patients

Ct scan of abdomen and pelvis without contrast 74176

A CT scan of the abdomen and pelvis is a non-invasive medical test. It uses special X-ray equipment to create detailed images of your abdominal and pelvic areas. This helps doctors examine organs, tissues, and vessels. No contrast dye is used in this procedure.

29 services29 patients

Ultrasonic guidance for blood vessel access 76937

Ultrasonic guidance for blood vessel access is a medical procedure where sound waves are used to create images of your blood vessels. This helps doctors to accurately locate and access the vessels for treatments or tests, ensuring safety and precision.

29 services29 patients

X-ray of shoulder, minimum of 2 views 73030

An X-ray of the shoulder, with a minimum of 2 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of your shoulder bones. This helps in diagnosing conditions like fractures, arthritis, or other abnormalities. The procedure is quick and painless.

26 services24 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.

26 services25 patients

Drainage of fluid from abdominal cavity using imaging guidance 49083

This procedure involves removing excess fluid from your abdominal cavity, which can relieve discomfort. A specialist uses imaging technology to guide a thin needle into the right spot. The fluid is then drained out safely.

24 services13 patients

Ct scan of blood vessels of neck with contrast 70498

A CT scan of the neck's blood vessels with contrast is a diagnostic procedure. It uses X-rays and a special dye to create detailed images of your neck's blood vessels. This helps doctors detect issues such as blockages or abnormalities.

22 services22 patients

Review by radiologist of image from tube placement into bile and pancreatic duct using an endoscope 74330

This procedure involves a radiologist examining images from a tube placement in your bile and pancreatic duct. An endoscope, a flexible tube with a light and camera, is used to help guide this process. It assists in diagnosing and treating conditions related to these ducts.

22 services16 patients

Insertion of central venous tube with port (5 years or older) 36561

A central venous tube with port is a small, flexible tube inserted into a large vein, usually in the chest. It allows for easy administration of medication, fluids, or blood products over a long period. A port is attached under the skin for easy access. It's safe for individuals aged 5 and above.

20 services20 patients

X-ray of knee, 3 views 73562

An X-ray of the knee, 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the knee from three different angles. This helps medical professionals to diagnose and monitor conditions like arthritis, fractures, or infections. The process is quick and painless.

20 services18 patients

Ct scan of upper spine without contrast 72125

A CT scan of the upper spine without contrast is a non-invasive imaging test that uses X-rays to capture detailed images of your neck and upper back. It helps in identifying issues like fractures, tumors, or infections. No dye (contrast) is used in this scan.

19 services19 patients

Ct scan of blood vessels of head with contrast 70496

A CT scan of the head's blood vessels with contrast is a diagnostic procedure. A special dye (contrast) is injected into your body to make the blood vessels visible on the scan. This helps identify issues like blockages or abnormalities in your head's blood vessels.

18 services18 patients

Imaging guidance for procedure, 60 minutes or less 76000

Imaging guidance is a procedure where real-time images are used to direct medical tools during a treatment. This technique helps to improve accuracy and safety. The procedure typically lasts 60 minutes or less.

18 services18 patients

Injection of chemical agent into multiple incompetent veins of leg 36471

This procedure involves injecting a special chemical into problematic veins in the leg. The chemical helps to close off these veins, rerouting blood through healthier veins. This can alleviate discomfort and improve the appearance of the treated area.

17 services11 patients

X-ray of hip, 2-3 views 73502

An X-ray of the hip with 2-3 views is a non-invasive imaging test. It uses a small amount of radiation to produce pictures of the hip joint. These images help in diagnosing conditions like fractures, arthritis, or other abnormalities. The process is quick and painless.

17 services17 patients

Ct scan of blood vessels of abdomen and pelvis with contrast 74174

A CT scan of the abdomen and pelvis with contrast is a medical imaging procedure. A special dye, called contrast, is used to make blood vessels more visible. The scan produces detailed images of your abdomen and pelvis, helping doctors to diagnose conditions or plan treatments.

17 services17 patients

Aspiration of fluid from chest cavity using imaging guidance 32555

This procedure, known as a thoracentesis, involves removing fluid from the space between the lungs and chest wall, called the pleural space. It's performed under imaging guidance to ensure precision. It can help diagnose conditions or relieve symptoms like shortness of breath.

16 services16 patients

Ct scan of blood vessels of chest with contrast 71275

A CT scan of the chest with contrast is a non-invasive imaging test. It uses X-rays and a special dye to get detailed images of your blood vessels in the chest. This helps in diagnosing conditions related to heart and lungs.

16 services16 patients

Complete ultrasound scan of abdomen 76700

A complete ultrasound scan of the abdomen is a non-invasive imaging procedure. It uses sound waves to produce images of the organs in your abdomen, such as the liver, gallbladder, spleen, pancreas, and kidneys. It helps in diagnosing, monitoring, and planning treatments.

15 services15 patients

Ultrasonic guidance for needle placement 76942

Ultrasonic guidance for needle placement is a technique where sound waves create images that help accurately position the needle during procedures. This method ensures precision, minimizes discomfort, and increases safety.

15 services15 patients

X-ray of pelvis, 1-2 views 72170

An X-ray of the pelvis, 1-2 views, is a quick and painless imaging test. It uses a small amount of radiation to produce images of the lower part of your torso. These images help to detect any abnormalities or injuries in your hip bones and surrounding structures.

14 services14 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.

14 services14 patients

Ultrasound study of one arm or leg veins with compression and maneuvers 93971

14 services14 patients

Review by radiologist of ct guidance for needle placement 77012

This process involves a radiologist examining CT scan images to accurately guide a needle's placement within the body. This technique is often used for biopsies or treatments, ensuring precision and safety.

13 services13 patients

Insertion of tunneled central venous tube for infusion (5 years or older) 36558

The insertion of a tunneled central venous tube is a procedure where a thin, flexible tube is placed into a large vein, usually in the neck or chest. This tube allows healthcare providers to give medications, fluids, or nutrients directly into your bloodstream over a longer period.

11 services11 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.

11 services11 patients

Hospital Affiliations CMS Care Compare 5

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

Phoebe Putney Memorial Hospital

Acute Care Hospitals · Albany, GA

2/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number110007

Location417 Third AvenueAlbany, GA 31703 · Dougherty County

Emergency services Birthing friendly

Saint Alphonsus Regional Medical Center

Acute Care Hospitals · Boise, ID

4/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number130007

Location1055 North Curtis RoadBoise, ID 83706 · Ada County

Emergency services Birthing friendly

Saint Alphonsus Medical Center - Nampa

Acute Care Hospitals · Nampa, ID

3/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number130013

Location4300 E Flamingo AveNampa, ID 83687 · Canyon County

Emergency services Birthing friendly

Uphs Marquette Dlp Hospital

Acute Care Hospitals · Marquette, MI

3/5 CMS rating

OwnershipGovernment - Local

CMS Certification Number230054

Location850 W Baraga AveMarquette, MI 49855 · Marquette County

Emergency services Birthing friendly

Essentia Health

Acute Care Hospitals · Fargo, ND

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number350070

Location3000 32nd Ave SouthFargo, ND 58104 · Cass County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06488 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

$93.86 typical visit price

range $60.82 – $183.10

Typical copayment $23.46 (range $15.20 – $45.77)

Most-billed visit code 99203

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.

Reported Quality Measures

Radiology: Stenosis Measurement in Carotid Imaging Reports

Percentage of final reports for carotid imaging studies (neck magnetic resonance angiography [MRA], neck computed tomography angiography [CTA], neck duplex ultrasound, carotid angiogram) performed that include direct or indirect reference to measurements of…

86%22 patients

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 17

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

MRS. DONNA M. LEDDY RPT

Physical Therapist

385 MAIN ST S, SUITE 212
SOUTHBURY, CT 06488

Naugatuck Valley Planning Region (203) 262-4603

MS. MAUREEN KEEGAN BOYD RPT

Physical Therapist

385 MAIN ST S, STE 212
SOUTHBURY, CT 06488

Naugatuck Valley Planning Region (203) 262-4603

MICHAEL MALIN MD

Radiology (Diagnostic Radiology)

385 MAIN ST S, UNION SQUARE
SOUTHBURY, CT 06488

Naugatuck Valley Planning Region (203) 264-7999

JANE HUNTER

Internal Medicine

385 MAIN ST S, SUITE 106 UNION SQUARE
SOUTHBURY, CT 06488

Naugatuck Valley Planning Region (203) 262-4600

LAURA A. KAPLAN MD

Radiology (Diagnostic Radiology)

385 MAIN ST S
SOUTHBURY, CT 06488

Naugatuck Valley Planning Region (203) 264-7999

SOUTHBURY SMILES, LLC

Dentist (General Practice)

385 MAIN ST S, SUITE 210
SOUTHBURY, CT 06488

Naugatuck Valley Planning Region (203) 264-1620

ROBERT LEHMAN MD

Radiology (Diagnostic Radiology)

385 MAIN ST S, UNION SQUARE BLDG#2
SOUTHBURY, CT 06488

Naugatuck Valley Planning Region (203) 264-7999

COMPREHENSIVE HEALTHCARE LLC

Internal Medicine

385 MAIN ST S, SUITE 106
SOUTHBURY, CT 06488

Naugatuck Valley Planning Region (203) 262-4600

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 Gregory Gersten's NPI number?

The NPI number for Gregory Gersten is 1487688214. It was assigned to this individual provider in the NPPES registry on July 10, 2006.

Where is Gregory Gersten located?

Gregory Gersten practices at 385 Main St S Union Square, Southbury, CT 06488. The listed phone number is (203) 264-7999.

What is Gregory Gersten's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Is Gregory Gersten enrolled in Medicare?

Yes. Gregory Gersten 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 Gregory Gersten's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Gersten reassigns Medicare benefits to 11 organizations: Diagnostic Imaging Of Southbury (Southbury, CT), Diagnostic Imaging Associates LLC (Waterbury, CT), Naugatuck Valley Mri LLC (Waterbury, CT), Naugatuck Valley Radiological Associates PC (Waterbury, CT), Prospect Diagnostic Imaging (Prospect, CT) and 6 more organizations, listed in the Medicare section above. 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 Gregory Gersten's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gregory Gersten accept?

Health plans from Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company and Priority Health list Gregory Gersten as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Gregory Gersten affiliated with any hospitals?

According to CMS data, Gregory Gersten is affiliated with Phoebe Putney Memorial Hospital, Saint Alphonsus Regional Medical Center, Saint Alphonsus Medical Center - Nampa, Uphs Marquette Dlp Hospital and Essentia Health.

When was this NPI record last updated?

The NPPES record for Gregory Gersten was last updated on August 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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.