Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

HOLLEY DEY M.D.
NPI 1700860699
Radiology - Diagnostic Radiology in Wallingford, CT

Active since December 04, 2005PECOS Enrolled
97 BARNES RD, WALLINGFORD, CT 06492(203) 949-2700(203) 949-2712 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

  • Individual
  • Female
  • Years of Experience 46
  • Radiology
  • Diagnostic Radiology
  • May Accept Medicare Approved Payment
  • PECOS Enrolled
  • Medicare Quality Reporting

About HOLLEY DEY

This page provides the complete NPI Profile along with additional information for Holley Dey, a provider established in Wallingford, Connecticut with a medical specialization in Radiology, focusing in diagnostic radiology and more than 46 years of experience. She graduated from University Of Connecticut School Of Medicine in 1981. The healthcare provider is registered in the NPI registry with number 1700860699 assigned on December 2005. The practitioner's primary taxonomy code is 2085R0202X with license number 025655 (CT). The provider is registered as an individual and her NPI record was last updated July 2026.

NPI
1700860699
Provider Name
HOLLEY DEY M.D.
Gender
Female
Entity Type
Individual
Location Address
97 BARNES RD WALLINGFORD, CT 06492
Location Phone
(203) 949-2700
Location Fax
(203) 949-2712
Mailing Address
101 N PLAINS INDUSTRIAL RD WALLINGFORD, CT 06492
Mailing Phone
(203) 949-2700
Mailing Fax
(203) 949-2712
Medical School Name
UNIVERSITY OF CONNECTICUT SCHOOL OF MEDICINE
Graduation Year
1981
Is Sole Proprietor?
No
Enumeration Date
12-04-2005
Last Update Date
07-13-2026
Code Navigator

Location Map

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Radiology Diagnostic Radiology

Taxonomy Code
2085R0202X
Type
Allopathic & Osteopathic Physicians
License No.
025655
License State
CT
Taxonomy Description
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.

Medicare Participation & PECOS Enrollment Status

Holley Dey is registered with Medicare but may not accept claims assignment. If you are a Medicare beneficiary call and confirm with the provider before seeking any services.

Holley Dey is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • PECOS PAC ID: 4789675117

    What is the PECOS Associate Control ID?
    A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.

  • PECOS Enrollment ID: I20040524000247, I20260226003782

    What is the Provider Enrollment ID?
    The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.

  • Accepts Medicare Assignment? Maybe

    What does it mean "accepts medicare assignment"?
    When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
    A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Complete ultrasound scan of 1 breast

A complete ultrasound scan of one breast is a non-invasive imaging test that uses sound waves to create detailed images of the inside of your breast. It helps in detecting any abnormalities or changes, ensuring your breast health.

This service was performed 12 times for 12 patients

Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066)

Diagnostic digital breast tomosynthesis is a 3D imaging test that allows doctors to examine your breast tissue layer by layer. It's performed on one or both sides. It helps in detecting abnormalities more accurately. It's often done in addition to other tests.

This service was performed 21 times for 21 patients

Diagnostic mammography of 1 breast

Diagnostic mammography of 1 breast is a detailed imaging test that allows doctors to closely examine a specific area in the breast. It's often used when a routine screening reveals an abnormality. This test can help identify any unusual changes or issues.

This service was performed 15 times for 15 patients

Iodine 1-123 ioflupane, diagnostic, per study dose, up to 5 millicuries

Iodine 1-123 Ioflupane is a diagnostic procedure where a small radioactive substance is introduced into your body. It helps to create clear images of your brain, specifically to study the functioning of your brain's nerve cells.

This service was performed 18 times for 18 patients

Limited ultrasound scan of 1 breast

A limited ultrasound scan of one breast is a non-invasive imaging test. It uses sound waves to create pictures of the inside of your breast. It helps identify any unusual growths or changes. It's safe, quick, and typically painless.

This service was performed 14 times for 14 patients

Nuclear medicine studies of heart muscle at rest and with stress and spect

Nuclear medicine studies of the heart involve two parts: rest and stress. During rest, images are taken of your heart at ease. During stress, images are taken after exercise or medication-induced stress. SPECT is a special imaging technique providing 3D pictures of your heart, helping identify any issues.

This service was performed 20 times for 20 patients

Nuclear medicine study from skull base to mid-thigh with ct scan

A nuclear medicine study from skull base to mid-thigh with a CT scan involves using a small amount of radioactive material and CT imaging to examine body tissues and organs. This helps detect any abnormalities by providing detailed images of the body's internal structure.

This service was performed 31 times for 31 patients

Nuclear medicine study, spect imaging, 1 area or single acquisition, single day imaging

A nuclear medicine study with SPECT involves a safe, small amount of radioactive substance to help visualize body organs. SPECT, or Single Photon Emission Computed Tomography, creates detailed 3D images. This helps doctors diagnose and monitor conditions in a specific body area.

This service was performed 19 times for 19 patients

Screening 3d breast mammography

Screening 3D breast mammography is a procedure that uses low-dose X-rays to create detailed images of the breast. This allows for early detection of any unusual changes or growths. It's a non-invasive, outpatient procedure that typically takes about 30 minutes.

This service was performed 104 times for 104 patients

Screening mammography

Screening mammography is a preventative measure that uses low-dose X-rays to take images of the chest area. It's a key tool in early detection of abnormalities, helping to identify issues before they become symptomatic. It is recommended annually for certain age groups.

This service was performed 105 times for 105 patients

X-ray of chest, 1 view

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.

This service was performed 17 times for 16 patients

Physician Visit Costs

The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.

For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.

The prices below reflect the costs for new and established patients in the 06492 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99203

  • Average New Patient Price $93.86
  • Minimum New Patient Price $60.82
  • Maximum New Patient Price $183.1
  • Average New Patient Copayment $23.46
  • Minimum New Patient Copayment $15.2
  • Maximum New Patient Copayment $45.77

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99213

  • Average Established Patient Price $75.55
  • Minimum Established Patient Price $19.76
  • Maximum Established Patient Price $149.26
  • Average Established Patient Copayment $18.88
  • Minimum Established Patient Copayment $4.94
  • Maximum Established Patient Copayment $37.31

* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.

Quality Reporting

The provider participated in CMS Quality Payment Program. The Quality Payment Program aims to improve population health, reduce costs and improve the care received by Medicare beneficiaries. The following quality measures meet Medicare's statistical reporting standards. Not all providers report the same information, because not all providers give the same services to patients. The quality information is just a snapshot of some the care providers give to their patients. Reporting more or less information is not a reflection of quality.

Quality Measure Performance Number of Patients

Reviews for HOLLEY DEY M.D.

There are currently no reviews for this provider. Be the first person to share your experience with this provider by filling out our review form. Your insights are appreciated and will help others make informed decisions.

NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1700860699, we treat the final digit (9) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 61. The final step is to find the difference between that total and the next multiple of ten (70 - 61 = 9).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
7
Unchanged
Pos 3
0
Doubled → 0
Pos 4
0
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
6
Unchanged
Pos 7
0
Doubled → 0
Pos 8
6
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
9
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 0 → 0 8 → 16 → 7 0 → 0 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 7 + 0 + 0 + 1 + 6 + 6 + 0 + 6 + 1 + 8 + 24 = 61

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 61 is 70. The difference is the calculated check digit.

70 - 61 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1700860699.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Clinical Nurse Specialist
97 BARNES RD, STE 2 PYRAMID PRIMARY CARE PHYSICIANS PC
WALLINGFORD, CT 06492
Internal Medicine (Cardiovascular Disease)
97 BARNES RD
WALLINGFORD, CT 06492
Internal Medicine (Cardiovascular Disease)
97 BARNES RD
WALLINGFORD, CT 06492
Pediatrics
97 BARNES RD
WALLINGSFORD, CT 06492
Psychiatry & Neurology (Geriatric Psychiatry)
97 BARNES RD, SUITE #2
WALLINGFORD, CT 06492
Radiology (Diagnostic Radiology)
97 BARNES RD
WALLINGFORD, CT 06492
Physical Therapist
97 BARNES RD
WALLINGFORD, CT 06492
Physical Therapist
97 BARNES RD
WALLINGFORD, CT 06492
Physical Therapist
97 BARNES RD
WALLINGFORD, CT 06492
Physical Therapist
97 BARNES RD
WALLINGFORD, CT 06492
Physical Therapist
97 BARNES RD
WALLINGFORD, CT 06492
Physical Therapist
97 BARNES RD
WALLINGFORD, CT 06492
Radiology (Diagnostic Radiology)
97 BARNES RD
WALLINGFORD, CT 06492
Radiology (Diagnostic Radiology)
97 BARNES RD
WALLINGFORD, CT 06492
Radiology (Diagnostic Radiology)
97 BARNES RD
WALLINGFORD, CT 06492
Pediatrics
97 BARNES RD, STE 6
WALLINGFORD, CT 06492
Nurse Practitioner
97 BARNES RD
WALLINGFORD, CT 06492
Radiology (Diagnostic Radiology)
97 BARNES RD
WALLINGFORD, CT 06492
Radiology (Diagnostic Radiology)
97 BARNES RD
WALLINGFORD, CT 06492
Radiology (Diagnostic Radiology)
97 BARNES RD
WALLINGFORD, CT 06492

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1700860699, enumerated as an "individual" on December 04, 2005.

The provider is located at 97 BARNES RD WALLINGFORD, CT 06492 and the phone number is (203) 949-2700.

Radiology with taxonomy code 2085R0202X and a focus in Diagnostic Radiology.