WILLIAM ROCCOS WALTER M.D.
NPI 1649568015
Radiology - Diagnostic Radiology in New York, NY

Q: What is William Walter's NPI number?

The NPI number for William Walter is 1649568015. It was assigned to this individual provider in the NPPES registry on July 19, 2011.

Q: What is William Walter'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 Walter was last updated on February 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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 19, 2011PECOS EnrolledAccepts Medicare Assignment

333 E 38TH ST, NEW YORK, NY 10016(646) 501-7400 Get Directions Write a Review

NPPES record last updated: February 2, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Feb 2, 2026, Aug 31, 2017, Jan 12, 2017 (3 updates tracked since 2017).

On this page

About William Roccos Walter M.d. NPPES

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

WILLIAM ROCCOS WALTER M.D. (NPI 1649568015) is an individual diagnostic radiology provider in New York, New York, licensed in New York (282912) and active in the NPI registry since July 2011. He is enrolled in Medicare PECOS, is affiliated with New York-presbyterian Hospital, and is a graduate of University Of Michigan Medical School (2011).

NPPES Registry Identity

NPI1649568015

Entity TypeIndividualMale

Primary Taxonomy2085R0202X

Provider Legal NameWILLIAM ROCCOS WALTERCredential: M.D.

Location Address333 E 38TH STNew York, NY 10016-2772

Mailing Address333 E 38th StNew York, NY 10016-2772 · (617) 304-3148

Phone(646) 501-7400

Sole ProprietorNo

Medical School CMSUniversity Of Michigan Medical SchoolGraduated 2011

Enumeration DateJuly 19, 2011

Last NPPES UpdateFebruary 2, 20263 updates tracked since enumeration

NPPES CertifiedFebruary 2, 2026

✔ NPI 1649568015 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 · 282912

Definition

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

333 E 38TH ST, New York, NY 10016

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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 Roccos Walter M.d. 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 ID8022300250

PECOS Enrollment IDI20170224000706

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

Columbiadoctors/Newyork-Presbyterianimaging

1.0 mi

Specialist

51 WEST 51ST STREET
New York, NY 10019

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

NPI 1902345986 (212) 326-8518

New York City Health And Hospitals Corporation

2.3 mi

Skilled Nursing Facility

900 MAIN ST, ROOM A22-4
New York, NY 10044

Reassigned Medicare billing, New York enrollment
1,615 clinicians in this Medicare group

NPI 1679581607 (212) 848-6263

Trustees Of Columbia University In The City Of New York

6.7 mi

Anesthesiology

622 W 168TH ST
New York, NY 10032

Reassigned Medicare billing, New York enrollment
3,922 clinicians in this Medicare group

NPI 1477068971 (212) 305-9876

Columbia/Newyork-Presbyterian Advanced Imaging Inc.

6.8 mi

Specialist

722 W 168TH ST
New York, NY 10032

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

NPI 1356171797 (212) 342-2889

New York University

1,039 mi

Cardiovascular Disease

3301 QUANTUM BLVD
Boynton Beach, FL 33426

Reassigned Medicare billing, New York enrollment
2,450 clinicians in this Medicare group

NPI 1285826438 (877) 648-2964

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 60

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.

Injection, gadobutrol, 0.1 ml A9585

Gadobutrol is a contrast agent used during MRI scans to help provide clearer images. It's injected into your vein before the scan. This helps doctors to see certain areas more clearly for better diagnosis. It's generally safe with few side effects.

1,349 services16 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.

427 services227 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.

323 services202 patients

X-ray of knee, 4 or more views 73564

An X-ray of the knee, 4 or more views, is a non-invasive imaging test. It involves capturing multiple images of your knee from different angles. This helps in diagnosing conditions such as fractures, arthritis, or infections. The procedure is quick and painless.

292 services136 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.

270 services189 patients

Dxa bone density measurement of hip, pelvis, spine 77080

A DXA bone density measurement is a simple, quick, and non-invasive procedure that assesses the strength of your bones. This test uses X-rays to measure the amount of minerals, mainly calcium, in the hip, pelvis, and spine. It helps in early detection of osteoporosis or other bone diseases.

269 services184 patients

X-ray of foot, minimum of 3 views 73630

An X-ray of the foot, minimum of 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the bones and tissues in your foot. This helps to identify fractures, infections, or other abnormalities. Multiple views ensure a comprehensive examination.

236 services115 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.

197 services115 patients

X-ray of hand, minimum of 3 views 73130

An X-ray of the hand, minimum of 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the bones in your hand from different angles. This helps in diagnosing fractures, infections, arthritis, or other abnormalities. It's quick and painless.

196 services74 patients

X-ray of lower and sacral spine, 2-3 views 72100

An X-ray of the lower and sacral spine involves capturing images of your lower back area, including the tailbone. This procedure helps in identifying problems like fractures, infections, or deformities. 2-3 different angle views provide a comprehensive picture.

179 services107 patients

X-ray of knee, 1-2 views 73560

An X-ray of the knee with 1-2 views is a quick, painless test that produces images of the knee bones. It helps identify fractures, infections, or changes in the knee joint. During the procedure, you'll be asked to stay still while the X-ray machine captures the images.

156 services101 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.

146 services146 patients

X-ray for bone length assessment 77073

An X-ray for bone length assessment is a simple, non-invasive imaging test. It helps to evaluate the length of your bones and identify any discrepancies or abnormalities. This procedure is quick, painless, and provides valuable information for your healthcare provider.

125 services121 patients

X-ray of wrist, minimum of 3 views 73110

An X-ray of the wrist, minimum of 3 views, is a diagnostic procedure that uses radiation to create images of your wrist from different angles. This helps detect fractures, infections, or other abnormalities for accurate diagnosis and treatment planning.

101 services55 patients

X-ray of ankle, minimum of 3 views 73610

An ankle X-ray is a quick, painless imaging test. It involves capturing at least three different images or 'views' of your ankle using small amounts of radiation. These images help identify any abnormalities or injuries, such as fractures or arthritis.

100 services55 patients

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.

97 services67 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.

79 services79 patients

X-ray of upper spine, 2-3 views 72040

An X-ray of the upper spine, with 2-3 views, is a painless procedure that employs a small amount of radiation to capture images of your neck and upper back. It assists in diagnosing conditions like arthritis, fractures, or spinal deformities.

78 services48 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.

76 services45 patients

X-ray of lower and sacral spine, minimum of 4 views 72110

An X-ray of the lower and sacral spine involves capturing images of your lower back and tailbone area. It helps in identifying issues like fractures, arthritis, or other abnormalities. At least four different angles or 'views' are taken to get a comprehensive picture.

68 services46 patients

X-ray of hip, 2-3 views 73502

64 services64 patients

X-ray of both hips, 3-4 views 73522

An X-ray of both hips with 3-4 views is a safe imaging procedure. It involves capturing multiple pictures of your hip joints from different angles. This helps in diagnosing conditions like arthritis or fractures. You'll need to stay still during the process for clear images.

60 services37 patients

X-ray of knee, 4 or more views 73564

57 services49 patients

X-ray of entire middle and lower spine, 2-3 views 72082

An X-ray of your middle and lower spine involves capturing images of these areas to identify any abnormalities. The procedure involves taking 2-3 different views for a comprehensive understanding. It's non-invasive and usually painless, helping doctors diagnose conditions like fractures or infections.

55 services53 patients

X-ray of shoulder, minimum of 2 views 73030

53 services50 patients

X-ray of wrist, minimum of 3 views 73110

51 services45 patients

Ct scan of lower spine without contrast 72131

A CT scan of the lower spine without contrast is a non-invasive imaging test. It uses X-rays to create detailed images of your lower back area, helping to detect conditions like fractures, infections, or tumors. It's painless and generally quick.

49 services49 patients

X-ray of elbow, minimum of 3 views 73080

An elbow X-ray with a minimum of 3 views is a non-invasive imaging test. It helps visualize the bones of the elbow from different angles. This aids in diagnosing conditions like fractures or arthritis. The procedure is quick, painless, and usually takes around 15 minutes.

49 services29 patients

X-ray of lower leg, 2 views 73590

An X-ray of the lower leg, 2 views, is a quick, painless test that produces images of the bones in your lower leg. It helps to identify fractures, infections, or diseases. Two different angles are used to provide a comprehensive view of the leg's structure.

49 services37 patients

X-ray of middle spine, 2 views 72070

An X-ray of the middle spine, or thoracic spine, involves capturing two different images of the area. This non-invasive procedure uses small amounts of radiation to visualize the bones and tissues in your back, helping to identify any abnormalities or injuries.

47 services30 patients

X-ray of thigh bone, minimum 2 views 73552

An X-ray of the thigh bone is a non-invasive imaging test. It involves passing a small amount of radiation through the thigh to produce images of the bone structure. At least two different angles are captured for a comprehensive view. This helps detect fractures, infections, or other abnormalities.

45 services44 patients

X-ray of foot, minimum of 3 views 73630

45 services37 patients

X-ray of hand, minimum of 3 views 73130

42 services36 patients

X-ray of both hips, 2 views 73521

An X-ray of both hips, 2 views, is an imaging test that uses a small amount of radiation to create detailed pictures of your hip joints. This procedure helps to detect fractures, infections, or other abnormalities in the hip area. Two different angles will be captured for a comprehensive assessment.

39 services25 patients

X-ray of pelvis, 1-2 views 72170

36 services23 patients

X-ray of entire middle and lower spine, 4-5 views 72083

This procedure involves taking multiple images of your middle and lower spine using X-rays. These X-rays help to visualize the bones and surrounding tissues, aiding in the diagnosis of conditions such as arthritis, fractures, or disc problems. It's a quick and painless process.

35 services35 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.

33 services22 patients

Ct scan of middle spine without contrast 72128

A CT scan of the middle spine without contrast is a non-invasive imaging test. It uses X-rays to create detailed pictures of your mid-spine area. This scan helps doctors identify issues like fractures, tumors, or infections. No dye is used in this procedure.

32 services32 patients

X-ray of lower leg, 2 views 73590

30 services17 patients

X-ray of ankle, minimum of 3 views 73610

30 services27 patients

X-ray of ribs on side of body, 2 views 71100

This procedure involves taking two separate X-ray images of your ribs from different angles. It's a non-invasive test that helps visualize the bones and surrounding areas to detect any abnormalities or injuries. You'll be positioned carefully to capture the best images.

29 services15 patients

Ct scan of leg without contrast 73700

A CT scan of the leg is a non-invasive imaging test that uses X-rays to capture detailed images of your leg's bones, muscles, and blood vessels. It doesn't use contrast dye and doesn't cause any pain. It helps in diagnosing injuries or diseases.

29 services19 patients

X-ray of thigh bone, minimum 2 views 73552

28 services19 patients

X-ray of elbow, minimum of 3 views 73080

27 services24 patients

X-ray of forearm, 2 views 73090

An X-ray of the forearm, 2 views, is a diagnostic procedure where two different pictures of your forearm are taken using a small amount of radiation. These images help doctors assess your bone health and identify any fractures, infections, or other abnormalities.

26 services22 patients

X-ray of knee, 1-2 views 73560

26 services22 patients

X-ray of upper arm, minimum of 2 views 73060

An X-ray of the upper arm with a minimum of 2 views involves capturing images of your arm from different angles. This helps in assessing the bones and surrounding tissues for any abnormalities or injuries. It's a quick, painless procedure.

25 services22 patients

Limited ultrasound scan of joint or other extremity structure except blood vessels 76882

A limited ultrasound scan of a joint or other extremity structure lacking blood vessels is a non-invasive procedure that uses sound waves to create images of the inside of your body. This helps in diagnosing and monitoring conditions related to your joints or other similar structures.

25 services22 patients

Ct scan of lower spine without contrast 72131

23 services12 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.

23 services14 patients

Mri scan of pelvis without contrast 72195

An MRI scan of the pelvis without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to create detailed pictures of the lower part of your body. This helps doctors to identify any abnormalities or issues in that area.

22 services13 patients

X-ray of upper arm, minimum of 2 views 73060

21 services15 patients

Ct scan of leg without contrast 73700

21 services20 patients

X-ray of upper spine, 4-5 views 72050

An X-ray of the upper spine with 4-5 views is a non-invasive imaging test. It uses radiation to capture detailed images of the bones and structures in your neck and upper back. This procedure helps identify issues like fractures, infections, or deformities.

20 services13 patients

X-ray of foot, 2 views 73620

An X-ray of the foot, 2 views, is a quick, painless test that produces images of the bones and structures inside your foot. Two different angles are used to provide a comprehensive view. This helps doctors diagnose fractures, infections, or other abnormalities.

18 services14 patients

X-ray of finger, minimum of 2 views 73140

An X-ray of the finger involves capturing images of your finger from at least two different angles. This non-invasive procedure helps in visualizing the bones and joints, aiding in the diagnosis of fractures, infections, or other abnormalities. Minimal discomfort may be experienced.

17 services11 patients

X-ray lower and sacral spine, minimum of 6 views 72114

An X-ray of the lower and sacral spine involves capturing images of the bones in your lower back and tailbone area. It helps to identify issues like fractures, infections, or degenerative diseases. A minimum of 6 views ensures a comprehensive examination.

16 services16 patients

Mri scan of leg without contrast 73718

14 services11 patients

X-ray of both hips, 3-4 views 73522

13 services13 patients

X-ray of entire middle and lower spine, minimum of 6 views 72084

This procedure involves taking a series of X-ray images, at least six, of your middle and lower spine. It helps to identify any abnormalities or issues such as fractures, infections, or tumors. You'll be asked to stay still while the machine captures the images. It's quick and painless.

12 services11 patients

Hospital Affiliations CMS Care Compare 5

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

New York-Presbyterian Hospital

Acute Care Hospitals · New York, NY

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330101

Location525 East 68th StreetNew York, NY 10065 · New York County

Emergency services Birthing friendly

Long Island Community Hospital

Acute Care Hospitals · Patchogue, NY

1/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330141

Location101 Hospital RoadPatchogue, NY 11772 · Suffolk County

Emergency services

Bellevue Hospital Center

Acute Care Hospitals · New York, NY

2/5 CMS rating

OwnershipGovernment - Local

CMS Certification Number330204

Location462 First AvenueNew York, NY 10016 · New York County

Emergency services Birthing friendly

Nyu Langone Hospitals

Acute Care Hospitals · New York, NY

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330214

Location550 First AvenueNew York, NY 10016 · New York County

Emergency services Birthing friendly

Hudson Valley Hospital Center

Acute Care Hospitals · Cortlandt Manor, NY

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330267

Location1980 Crompond RoadCortlandt Manor, NY 10567 · Westchester County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10016 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.

VICTORIA MARIE STOFF PA-C

Physician Assistant

333 E 38TH ST
NEW YORK, NY 10016

New York County (646) 501-7208

NATALIE AZAR MD

Internal Medicine (Rheumatology)

333 E 38TH ST, NYU CENTER FOR MUSCULOSKELETAL CARE
NEW YORK, NY 10016

New York County (646) 501-7400

MS. SAMANTHA NARDILLA FNP

Nurse Practitioner (Family)

333 E 38TH ST
NEW YORK, NY 10016

New York County (646) 501-7200

KELLY FAITH DENNIS

Nurse Practitioner (Acute Care)

333 E 38TH ST
NEW YORK, NY 10016

New York County (646) 501-7440

JENNIFER MCNALLY I

Social Worker

333 E 38TH ST
NEW YORK, NY 10016

New York County (646) 501-7070

DR. MICHAEL J ALAIA M.D.

Orthopaedic Surgery (Sports Medicine)

333 E 38TH ST, NYU HOSPITAL FOR JOINT DISEASES
NEW YORK, NY 10016

New York County (646) 501-7041

HARRY H SHEN MD

Internal Medicine (Rheumatology)

333 E 38TH ST, NYU CENTER FOR MUSCULOSKELETAL CARE
NEW YORK, NY 10016

New York County (646) 501-7400

SALVADOR ELIGADO PORTUGAL D.O.

Physical Medicine & Rehabilitation

333 E 38TH ST, 6TH FLOOR
NEW YORK, NY 10016

New York County (646) 501-7200

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 William Walter's NPI number?

The NPI number for William Walter is 1649568015. It was assigned to this individual provider in the NPPES registry on July 19, 2011.

Where is William Walter located?

William Walter practices at 333 E 38th St, New York, NY 10016. The listed phone number is (646) 501-7400.

What is William Walter's specialty?

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

Is William Walter enrolled in Medicare?

Yes. William Walter 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 William Walter's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Walter reassigns Medicare benefits to 5 organizations: Columbiadoctors/Newyork-Presbyterianimaging (New York, NY), New York City Health And Hospitals Corporation (New York, NY), Trustees Of Columbia University In The City Of New York (New York, NY), Columbia/Newyork-Presbyterian Advanced Imaging Inc. (New York, NY) and New York University (Boynton Beach, FL). 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 William Walter's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is William Walter affiliated with any hospitals?

According to CMS data, William Walter is affiliated with New York-Presbyterian Hospital, Long Island Community Hospital, Bellevue Hospital Center, Nyu Langone Hospitals and Hudson Valley Hospital Center.

When was this NPI record last updated?

The NPPES record for William Walter was last updated on February 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.