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

MARK LOUIS WINKLER MD
NPI 1689674343
Radiology - Diagnostic Radiology in Las Vegas, NV

Active since July 26, 2005PECOS Enrolled
2950 S MARYLAND PKWY, LAS VEGAS, NV 89109(702) 732-6000(702) 243-7531 Get Directions Write a Review

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

  • Individual
  • Male
  • Years of Experience 46
  • Radiology
  • Diagnostic Radiology
  • Accepts Medicare Approved Payment
  • PECOS Enrolled
  • Medicare Quality Reporting

About MARK WINKLER

This page provides the complete NPI Profile along with additional information for Mark Winkler, a provider established in Las Vegas, Nevada with a medical specialization in Radiology, focusing in diagnostic radiology and more than 46 years of experience. He graduated from Warren Alpert Medical School Of Brown University in 1981. The healthcare provider is registered in the NPI registry with number 1689674343 assigned on July 2005. The practitioner's primary taxonomy code is 2085R0202X with license number 5628 (NV). The provider is registered as an individual and his NPI record was last updated July 2026.

NPI
1689674343
Provider Name
MARK LOUIS WINKLER MD
Gender
Male
Entity Type
Individual
Location Address
2950 S MARYLAND PKWY LAS VEGAS, NV 89109
Location Phone
(702) 732-6000
Location Fax
(702) 243-7531
Mailing Address
PO BOX 36900 LAS VEGAS, NV 89133
Mailing Phone
(702) 732-6000
Mailing Fax
(702) 243-7531
Medical School Name
WARREN ALPERT MEDICAL SCHOOL OF BROWN UNIVERSITY
Graduation Year
1981
Is Sole Proprietor?
No
Enumeration Date
07-26-2005
Last Update Date
07-13-2026
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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.
5628
License State
NV
Taxonomy Description
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.

Medicare Participation & PECOS Enrollment Status

Mark Winkler is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.

Mark Winkler 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: 9638061948

    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: I20110421000426

    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? Yes

    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.

Ct scan of abdomen and pelvis without contrast

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.

This service was performed 23 times for 23 patients

Ct scan of arm without contrast

A CT scan of the arm without contrast is a non-invasive imaging test. It uses X-ray technology to capture detailed images of your arm's structures. It doesn't involve any contrasting dye, hence, minimal preparation is required. It helps in diagnosing injuries or conditions affecting the arm.

This service was performed 16 times for 16 patients

Ct scan of chest with contrast

A CT scan of the chest with contrast is an imaging procedure. A special dye (contrast) is used to highlight specific areas in your body, providing clearer pictures of your chest. This helps in diagnosing conditions related to your lungs, heart, and other chest structures.

This service was performed 16 times for 16 patients

Ct scan of chest without contrast

A CT scan of the chest without contrast is a non-invasive imaging procedure. It uses special X-ray equipment to produce detailed images of your chest area, including your lungs and heart. It can help diagnose conditions such as lung diseases or heart disorders. It doesn't involve any dyes or contrast agents.

This service was performed 62 times for 62 patients

Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries

Fluorodeoxyglucose F-18 FDG is a radioactive drug used in PET scans. It helps doctors see how your tissues and organs are functioning. The drug is given in a specific dose, up to 45 millicuries, depending on your body size and the type of scan.

This service was performed 17 times for 17 patients

Gallium ga-68 gozetotide, diagnostic, (illuccix), 1 millicurie

Gallium Ga-68 Gozetotide (Illuccix) is a diagnostic procedure using a radioactive tracer. It helps visualize certain types of tumors in your body by injecting a small amount of radioactive material. This is safe and aids doctors in accurate diagnosis and treatment planning.

This service was performed 136 times for 28 patients

Injection, gadoterate meglumine, 0.1 ml

Gadoterate meglumine is a contrast agent used in MRI scans to help visualize certain areas of your body more clearly. It's injected into your bloodstream, typically through a vein in your arm, and helps doctors get more detailed images.

This service was performed 14,295 times for 90 patients

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

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.

This service was performed 3,480 times for 46 patients

Mri scan of abdomen before and after contrast

An MRI scan of the abdomen before and after contrast provides detailed images of your abdominal organs. Initially, images are taken without a contrast agent. Then, a safe dye is administered, usually via an IV, to highlight certain areas, giving a clearer picture to help diagnose various conditions.

This service was performed 16 times for 16 patients

Mri scan of arm joint without contrast

An MRI scan of the arm joint is a non-invasive imaging procedure that uses magnetic fields and radio waves to create detailed images of the structures within your arm joint. No contrast dye is used in this process. It helps to diagnose or monitor conditions like arthritis, injuries, or infections.

This service was performed 90 times for 86 patients

Mri scan of arm without contrast

An MRI scan of the arm without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to create detailed pictures of the structures within your arm. This procedure helps in diagnosing injuries or diseases affecting muscles, bones, and joints.

This service was performed 12 times for 12 patients

Mri scan of blood vessels of head without contrast

An MRI scan of the head's blood vessels without contrast is a non-invasive imaging procedure. It uses a magnetic field and radio waves to create detailed images of the blood vessels in your head. This helps doctors diagnose conditions such as stroke, aneurysm, or other vascular disorders.

This service was performed 17 times for 17 patients

Mri scan of brain before and after contrast

An MRI scan of the brain, both before and after contrast, helps visualize different brain structures. Initially, images are taken without a contrast agent. Then, a safe dye is injected which helps highlight certain areas, providing clearer, more detailed images.

This service was performed 24 times for 24 patients

Mri scan of leg joint before and after contrast

An MRI scan of your leg joint involves using a magnetic field and radio waves to create detailed images of the structures within your joint. This process is done twice, once before and once after a contrast agent is injected. The contrast helps to highlight certain tissues for a clearer picture, aiding in diagnosis.

This service was performed 18 times for 14 patients

Mri scan of leg joint without contrast

An MRI scan of your leg joint is a non-invasive procedure that uses magnetic fields and radio waves to create detailed images of the structures within your leg. This helps doctors diagnose or monitor conditions without using contrast dye.

This service was performed 107 times for 98 patients

Mri scan of leg without contrast

An MRI scan of the leg without contrast is a non-invasive imaging procedure. It uses a magnetic field and radio waves to create detailed images of the structures in your leg, such as bones, muscles, and blood vessels. No contrast dye is used.

This service was performed 27 times for 26 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 38 times for 38 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $22.12 for a new patient copayment and $17.78 for an established patient copayment.

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 89109 ZIP code area.

New Patients Visit Costs *

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

  • Average New Patient Price $88.51
  • Minimum New Patient Price $57.07
  • Maximum New Patient Price $173.24
  • Average New Patient Copayment $22.12
  • Minimum New Patient Copayment $14.26
  • Maximum New Patient Copayment $43.31

Established Patients Visit Costs *

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

  • Average Established Patient Price $71.14
  • Minimum Established Patient Price $18.27
  • Maximum Established Patient Price $140.96
  • Average Established Patient Copayment $17.78
  • Minimum Established Patient Copayment $4.56
  • Maximum Established Patient Copayment $35.24

* 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
Collection and follow-up on patient experience and satisfaction data on beneficiary engagementYesN/A
Collection and follow-up on patient experience and satisfaction data on beneficiary engagement, including development of improvement plan.
Use of QCDR data for ongoing practice assessment and improvementsYesN/A
Use of QCDR data, for ongoing practice assessment and improvements in patient safety.

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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 1689674343, we treat the final digit (3) 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 77. The final step is to find the difference between that total and the next multiple of ten (80 - 77 = 3).

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
6
Unchanged
Pos 3
8
Doubled → 16 → 1 + 6
Pos 4
9
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
7
Unchanged
Pos 7
4
Doubled → 8
Pos 8
3
Unchanged
Pos 9
4
Doubled → 8
Check
3
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 8 → 16 → 7 6 → 12 → 3 4 → 8 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 1 + 6 + 9 + 1 + 2 + 7 + 8 + 3 + 8 + 24 = 77

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

The next multiple of ten after 77 is 80. The difference is the calculated check digit.

80 - 77 = 3
This NPI is valid
The calculated check digit is 3, which matches the last digit of 1689674343.

Other Providers at the Same Location


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

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2950 S MARYLAND PKWY
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2950 S MARYLAND PKWY
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Radiology (Diagnostic Radiology)
2950 S MARYLAND PKWY
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Radiology (Diagnostic Radiology)
2950 S MARYLAND PKWY
LAS VEGAS, NV 89109
Radiology (Diagnostic Radiology)
2950 S MARYLAND PKWY
LAS VEGAS, NV 89109
Radiology (Diagnostic Radiology)
2950 S MARYLAND PKWY
LAS VEGAS, NV 89109
Radiology (Diagnostic Radiology)
2950 S MARYLAND PKWY
LAS VEGAS, NV 89109
Radiology (Diagnostic Radiology)
2950 S MARYLAND PKWY
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Radiology (Diagnostic Radiology)
2950 S MARYLAND PKWY
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Radiology (Diagnostic Radiology)
2950 S MARYLAND PKWY
LAS VEGAS, NV 89109
Radiology (Diagnostic Radiology)
2950 S MARYLAND PKWY
LAS VEGAS, NV 89109
Radiology (Diagnostic Radiology)
2950 S MARYLAND PKWY
LAS VEGAS, NV 89109
Radiology (Diagnostic Radiology)
2950 S MARYLAND PKWY
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2950 S MARYLAND PKWY
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Radiology (Neuroradiology)
2950 S MARYLAND PKWY
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Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1689674343, enumerated as an "individual" on July 26, 2005.

The provider is located at 2950 S MARYLAND PKWY LAS VEGAS, NV 89109 and the phone number is (702) 732-6000.

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