DR. WILLIAM EDMUND PROMINSKI MD
NPI 1699749788
Radiology - Diagnostic Radiology in Washington, DC

Q: What is William Prominski's NPI number?

The NPI number for William Prominski is 1699749788. It was assigned to this individual provider in the NPPES registry on February 15, 2006. The provider is also known as Bill Edmund Prominski M.D..

Q: What is William Prominski'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 William Prominski was last updated on July 6, 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 February 15, 2006PECOS EnrolledAccepts Medicare Assignment

0/100

CMS Quality Rating

5255 LOUGHBORO RD NW, WASHINGTON, DC 20016(202) 537-4000 Get Directions Write a Review

NPPES record last updated: July 6, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 6, 2026, May 21, 2026, May 11, 2026 (3 updates tracked since 2026).

On this page

About Dr. William Edmund Prominski Md NPPES

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

DR. WILLIAM EDMUND PROMINSKI MD (NPI 1699749788) is an individual diagnostic radiology provider in Washington, District Of Columbia, licensed in District Of Columbia (MD045791) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS, is affiliated with Adventist Healthcare White Oak Medical Center, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1699749788

Entity TypeIndividualMale

Primary Taxonomy2085R0202X

Provider Legal NameDR. WILLIAM EDMUND PROMINSKICredential: MD

Location Address5255 LOUGHBORO RD NWWashington, DC 20016-2633

Mailing Address6201 Greenleigh AveBaltimore, MD 21220-2004 · (410) 933-6423 · Fax (410) 500-4266

Phone(202) 537-4000

Sole ProprietorNo

Medical School CMSGeorgetown University School Of MedicineGraduated 1983

Enumeration DateFebruary 15, 2006

Last NPPES UpdateJuly 6, 20263 updates tracked since enumeration

NPPES CertifiedJuly 6, 2026

✔ NPI 1699749788 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0202X

Licenses✔ Licensed in DC · MD045791✔ Licensed in MD · D0040432✔ Licensed in VA · 0101041171

Definition

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

5255 LOUGHBORO RD NW, Washington, DC 20016

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Other Names 1

Other Name (5)Bill Edmund Prominski M.d.

Secondary Practice Locations 2

Location 11610 Fielding Lewis WayMc Lean, VA 22101-3246 · Phone (952) 595-1100 · Fax (612) 294-4903

Location 28600 Old Georgetown RdBethesda, MD 20814-1422 · Phone (301) 896-3100

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. William Edmund Prominski 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 ID3274583414

PECOS Enrollment IDI20050126000405, I20181205001646

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 William Prominski reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Johns Hopkins University

4.2 mi

Neurological Surgery

8600 OLD GEORGETOWN RD
Bethesda, MD 20814

Reassigned Medicare billing, Maryland enrollment
4,483 clinicians in this Medicare group

NPI 1578569240 (410) 955-5000

Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc

6.2 mi

Health Maintenance Organization

700 2ND ST NE
Washington, DC 20002

Reassigned Medicare billing, District of Columbia, Virginia and Maryland enrollments
Also billed through NPI 1699893537 (Virginia), NPI 1285752121 (Maryland)
2,492 clinicians in this Medicare group

NPI 1093016933 (202) 898-5100

Inova Health Care Services

8.0 mi

Multi-Specialty

2740 PROSPERITY AVE STE 200
Fairfax, VA 22031

Reassigned Medicare billing, District of Columbia and Virginia enrollments
2,618 clinicians in this Medicare group

NPI 1669511051 (703) 321-2600

Washington Open Mri Inc

12 mi

Diagnostic Radiology

15005 SHADY GROVE RD STE 110
Rockville, MD 20850

Reassigned Medicare billing, District of Columbia and Maryland enrollments
14 clinicians in this Medicare group

NPI 1336184241 (301) 424-4888

Blackwell Physicians, LLC

12 mi

Diagnostic Radiology

9601 BLACKWELL RD STE 150
Rockville, MD 20850

Reassigned Medicare billing, District of Columbia enrollment
118 clinicians in this Medicare group

NPI 1932772589 (240) 864-1100

Adventist Physician Services, Inc.

15 mi

Physical Medicine & Rehabilitation

820 WEST DIAMOND AVENUE
Gaithersburg, MD 20878

Reassigned Medicare billing, District of Columbia enrollment
340 clinicians in this Medicare group

NPI 1376623207 (301) 315-3826

Johns Hopkins University

37 mi

Body Imaging

600 N WOLFE ST
Baltimore, MD 21205

Reassigned Medicare billing, District of Columbia enrollment
190 clinicians in this Medicare group

NPI 1093796609 (410) 356-8186

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 15

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.

Mri scan of lower spinal canal without contrast 72148

An MRI scan of the lower spinal canal without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to produce detailed images of your lower spine. This helps identify issues like disc problems, tumors, or nerve conditions. No dye is used.

449 services444 patients

Mri scan of brain without contrast 70551

An MRI scan of the brain without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to create detailed images of your brain. It helps in detecting abnormalities like tumors, stroke, inflammation, or infection.

297 services295 patients

Mri scan of upper spinal canal without contrast 72141

An MRI scan of the upper spinal canal without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to create detailed images of your upper spine. This helps doctors identify issues such as injuries, infections or diseases. No dye is used.

237 services236 patients

Mri scan of arm joint without contrast 73221

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.

185 services170 patients

Mri scan of brain before and after contrast 70553

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.

181 services175 patients

Mri scan of leg joint without contrast 73721

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.

142 services125 patients

Mri scan of middle spinal canal without contrast 72146

An MRI scan of the middle spinal canal without contrast is a non-invasive imaging test. It uses magnetic fields and radio waves to create detailed images of your spine. This helps doctors identify any abnormalities or issues in your spinal canal. No dye is used in this procedure.

96 services95 patients

Mri scan of blood vessels of head without contrast 70544

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.

44 services43 patients

Mri scan of leg without contrast 73718

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.

34 services29 patients

Mri scan of bone of eye socket, face, and/or neck without contrast 70540

An MRI scan of the eye socket, face, or neck is a non-invasive procedure that uses magnetic fields and radio waves to create detailed images of your bones and soft tissues. No contrast dye is used. It helps diagnose conditions or injuries in these areas. It's safe and usually takes about 30-60 minutes.

27 services27 patients

Mri scan of bone of eye socket, face, and/or neck before and after contrast 70543

An MRI scan of the eye socket, face, and/or neck uses magnetic fields to create detailed images of these areas. Contrast dye helps highlight specific tissues for clearer pictures. It's non-invasive, aids in detecting abnormalities, and guides treatment plans.

20 services19 patients

Mri scan of abdomen before and after contrast 74183

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.

16 services15 patients

Mri scan of arm without contrast 73218

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.

15 services13 patients

Mri scan of lower spinal canal before and after contrast 72158

An MRI scan of the lower spinal canal with contrast is a non-invasive imaging procedure. It uses magnetic fields to generate detailed images of your lower spine. A contrast agent is injected to enhance these images, helping doctors see issues more clearly.

14 services14 patients

Mri scan of upper spinal canal before and after contrast 72156

An MRI scan of the upper spinal canal before and after contrast is a non-invasive imaging test. It uses magnetic fields and radio waves to create detailed images of your spine. Contrast dye is injected to enhance these images, providing clearer visuals for accurate diagnosis.

11 services11 patients

Hospital Affiliations CMS Care Compare 3

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

Adventist Healthcare White Oak Medical Center

Acute Care Hospitals · Silver Spring, MD

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210016

Location11890 Healing WaySilver Spring, MD 20904 · Montgomery County

Emergency services Birthing friendly

Adventist Healthcare Shady Grove Medical Center

Acute Care Hospitals · Rockville, MD

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210057

Location9901 Medical Center DriveRockville, MD 20850 · Montgomery County

Emergency services Birthing friendly

Adventist Healthcare Fort Washington Medical Ctr

Acute Care Hospitals · Fort Washington, MD

2/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number210060

Location11711 Livingston RoadFort Washington, MD 20744 · Prince Georges County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20016 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

$100.31 typical visit price

range $65.18 – $194.86

Typical copayment $25.07 (range $16.29 – $48.71)

Most-billed visit code 99203

Established Patient

$80.66 typical visit price

range $21.40 – $158.88

Typical copayment $20.16 (range $5.35 – $39.72)

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.

0/100

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

Individually scored

Quality

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.

DANIEL RICHARD STAIRIKER CRNP

Nurse Practitioner