WILLIAM LOUIE SIMPSON MD
NPI 1285634451
Radiology - Diagnostic Radiology in New York, NY

Q: What is William Simpson's NPI number?

The NPI number for William Simpson is 1285634451. It was assigned to this individual provider in the NPPES registry on July 28, 2005.

Q: What is William Simpson'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 Simpson was last updated on November 4, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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 July 28, 2005PECOS EnrolledAccepts Medicare Assignment

1176 5TH AVE, NEW YORK, NY 10029(212) 241-6381(212) 410-1973 Get Directions Write a Review

NPPES record last updated: November 4, 2011. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About William Louie Simpson Md NPPES

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

WILLIAM LOUIE SIMPSON MD (NPI 1285634451) is an individual diagnostic radiology provider in New York, New York, licensed in New York (202773) and active in the NPI registry since July 2005. He is enrolled in Medicare PECOS, is affiliated with Mount Sinai Hospital, and is a graduate of Medical University Of South Carolina College Of Medicine (1994).

NPPES Registry Identity

NPI1285634451

Entity TypeIndividualMale

Primary Taxonomy2085R0202X

Provider Legal NameWILLIAM LOUIE SIMPSONCredential: MD

Location Address1176 5TH AVENew York, NY 10029-6503

Mailing Address1176 5th AveNew York, NY 10029-6503 · (212) 241-6381 · Fax (212) 410-1973

Phone(212) 241-6381

Fax(212) 410-1973

Sole ProprietorNo

Medical School CMSMedical University Of South Carolina College Of MedicineGraduated 1994

Enumeration DateJuly 28, 2005

Last NPPES UpdateNovember 4, 2011

✔ NPI 1285634451 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0202X

License✔ Licensed in NY · 202773

Definition

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

1176 5TH AVE, New York, NY 10029

Open in Google Maps ↗

Other Identifiers 3

Medicaid02061732NY

Medicare UPINH11665NY

Medicare ID-Type Unspecified971951NY

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

William Louie Simpson 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 ID9638258882

PECOS Enrollment IDI20080430000092

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 Simpson reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Fpa Hospital Based

Same address

Diagnostic Radiology

1176 5TH AVE, #1235
New York, NY 10029

Reassigned Medicare billing, New York enrollment
1,067 clinicians in this Medicare group

NPI 1487995700 (212) 241-6381

The New York Proton Center

1.4 mi

Oncology, Radiation

225 E 126TH ST
New York, NY 10035

Reassigned Medicare billing, New York enrollment
87 clinicians in this Medicare group

NPI 1609363670 (646) 968-9064

Mount Sinai School Of Medicine Of New York University

13 mi

Orthopaedic Surgery

984 N BROADWAY STE 306
Yonkers, NY 10701

Reassigned Medicare billing, New York enrollment
73 clinicians in this Medicare group

NPI 1336878651 (914) 369-1700

Icahn School Of Medicine At Mount Sinai

13 mi

Internal Medicine

283 BARD AVE
Staten Island, NY 10310

Reassigned Medicare billing, New York enrollment
66 clinicians in this Medicare group

NPI 1861900888 (718) 816-8068

North Shore Medical Group Of The Mount Sinai School Of Medicine

25 mi

Internal Medicine

2020 WANTAGH AVE
Wantagh, NY 11793

Reassigned Medicare billing, New York enrollment
572 clinicians in this Medicare group

NPI 1992417323 (516) 961-4545

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 28

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.

15,056 services155 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.

125 services119 patients

Ct scan of abdomen and pelvis with contrast 74177

86 services83 patients

Limited ultrasound scan of abdomen 76705

A limited ultrasound scan of the abdomen is a non-invasive imaging test. It uses sound waves to produce images of the abdominal organs such as the liver, gallbladder, spleen, pancreas, and kidneys. This helps to identify any abnormalities or issues.

80 services79 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.

71 services66 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.

67 services67 patients

Ct scan of chest with contrast 71260

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.

64 services61 patients

Ultrasound scan of head and neck soft tissue 76536

An ultrasound scan of the head and neck soft tissue is a non-invasive procedure that uses sound waves to create images of the soft tissues in these areas. It helps identify any abnormalities or issues, such as tumors, cysts, or infections. It's painless and doesn't involve radiation.

63 services63 patients

Complete ultrasound scan behind abdominal cavity 76770

A complete ultrasound scan behind the abdominal cavity is a non-invasive imaging procedure. It uses sound waves to create pictures of the structures and organs located at the back of your abdomen. It helps in diagnosing health conditions and monitoring ongoing treatments.

59 services58 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.

40 services39 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.

39 services38 patients

Ct scan of abdomen and pelvis without contrast 74176

38 services38 patients

Limited ultrasound scan of abdomen 76705

36 services36 patients

Ct scan of abdomen and pelvis before and after contrast 74178

A CT scan of your abdomen and pelvis with and without contrast helps visualize your internal organs better. Contrast is a special dye that improves the clarity of the images. It's taken orally or injected into your veins before the scan. The process is painless and quick.

34 services34 patients

Complete ultrasound scan behind abdominal cavity 76770

34 services34 patients

Ultrasound scan of transplanted kidney 76776

An ultrasound scan of a transplanted kidney is a non-invasive imaging procedure. It uses sound waves to produce images of your kidney, helping to monitor its health and function. This test helps detect any potential issues early, ensuring the kidney is working properly.

33 services32 patients

Complete ultrasound scan of pelvis 76856

A complete ultrasound scan of the pelvis is a safe, non-invasive imaging procedure. It uses sound waves to create pictures of your lower abdomen area, helping doctors to evaluate and diagnose any potential issues. It's painless and usually takes about 30 minutes.

30 services30 patients

Ct scan of abdomen before and after contrast 74170

A CT scan of the abdomen before and after contrast is a diagnostic procedure. It involves taking detailed images of your abdomen area. Initially, images are taken without a contrast agent. Then, a contrast dye is given to highlight specific areas inside your body, helping to provide clearer images for better diagnosis.

29 services29 patients

Ultrasound scan of uterus, ovaries, tubes, cervix and pelvic area through vagina 76830

An ultrasound scan of the lower abdominal region is a safe, non-invasive procedure that uses sound waves to create images of internal structures. This helps in checking the health of reproductive organs and detecting any abnormalities. The scan is done via a small probe inserted into the body.

26 services26 patients

Limited ultrasound scan behind abdominal cavity 76775

A limited ultrasound scan behind the abdominal cavity is a non-invasive imaging method that helps visualize structures in the back of your abdomen. This procedure uses sound waves to create pictures of these areas, assisting in diagnosing certain conditions.

24 services24 patients

Limited ultrasound scan behind abdominal cavity 76775

23 services23 patients

Ct scan of chest with contrast 71260

22 services22 patients

Complete ultrasound of abdomen and pelvis artery and vein blood flow 93975

This procedure uses sound waves to create images of your abdomen and pelvis, specifically focusing on the arteries and veins. It helps in assessing the blood flow and detecting any abnormalities, ensuring your overall well-being.

21 services21 patients

Ct scan of chest without contrast 71250

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.

18 services18 patients

Ct scan of chest without contrast 71250

14 services14 patients

Complete ultrasound of abdomen and pelvis artery and vein blood flow 93975

14 services14 patients

Ct scan of abdomen and pelvis before and after contrast 74178

13 services13 patients

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

13 services13 patients

Hospital Affiliations CMS Care Compare 3

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

Mount Sinai Hospital

Acute Care Hospitals · New York, NY

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330024

LocationOne Gustave L Levy PlaceNew York, NY 10029 · New York County

Emergency services Birthing friendly

Mount Sinai St Luke's Roosevelt Hospital

Acute Care Hospitals · New York, NY

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330046

Location1000 Tenth AvenueNew York, NY 10019 · New York County

Emergency services Birthing friendly

Mount Sinai Beth Israel

Acute Care Hospitals · New York, NY

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330169

LocationFirst Avenue At 16th StreetNew York, NY 10003 · New York County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10029 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

$102.04 typical visit price

range $65.69 – $198.19

Typical copayment $25.51 (range $16.42 – $49.54)

Most-billed visit code 99203

Established Patient

$81.44 typical visit price

range $21.20 – $160.66

Typical copayment $20.36 (range $5.30 – $40.16)

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.

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.

PUNEET SINGH PAWHA MD

Radiology (Diagnostic Radiology)