DR. TIMOTHY JAMES NIESEN M.D.
NPI 1780974105
Radiology - Vascular & Interventional Radiology in Newark, DE

Q: What is Timothy Niesen's NPI number?

The NPI number for Timothy Niesen is 1780974105. It was assigned to this individual provider in the NPPES registry on April 19, 2011.

Q: What is Timothy Niesen's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Vascular & Interventional Radiology, with taxonomy code 2085R0204X.

Q: When was this NPI record last updated?

The NPPES record for Timothy Niesen was last updated on July 7, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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 April 19, 2011PECOS EnrolledAccepts Medicare Assignment

4755 OGLETOWN STANTON RD, NEWARK, DE 19718(302) 733-1806(302) 733-1808 Get Directions Write a Review

NPPES record last updated: July 7, 2021. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jul 7, 2021, May 15, 2019, Jun 22, 2017 (3 updates tracked since 2017).

On this page

About Dr. Timothy James Niesen M.d. NPPES

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

DR. TIMOTHY JAMES NIESEN M.D. (NPI 1780974105) is an individual vascular & interventional radiology provider in Newark, Delaware, licensed in Pennsylvania (MD461182) and active in the NPI registry since April 2011. He is enrolled in Medicare PECOS and is a graduate of Drexel University College Of Medicine (2011).

NPPES Registry Identity

NPI1780974105

Entity TypeIndividualMale

Primary Taxonomy2085R0204X

Provider Legal NameDR. TIMOTHY JAMES NIESENCredential: M.D.

Location Address4755 OGLETOWN STANTON RDNewark, DE 19718-2200

Mailing Address4755 Ogletown Stanton RdNewark, DE 19718-2200 · (302) 733-1806 · Fax (302) 733-1808

Phone(302) 733-1806

Fax(302) 733-1808

Sole ProprietorNo

Medical School CMSDrexel University College Of MedicineGraduated 2011

Enumeration DateApril 19, 2011

Last NPPES UpdateJuly 7, 20213 updates tracked since enumeration

NPPES CertifiedJuly 7, 2021

✔ NPI 1780974105 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyRadiology · Vascular & Interventional RadiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0204X

Licenses✔ Licensed in PA · MD461182✔ Licensed in DE · C1-0010245

Definition

A radiologist who diagnoses and treats diseases by various radiologic imaging modalities. These include fluoroscopy, digital radiography, computed tomography, sonography and magnetic resonance imaging.

Also ListedRadiology · Diagnostic RadiologyTaxonomy 2085R0202X · License C1-0010245 (DE)

4755 OGLETOWN STANTON RD, Newark, DE 19718

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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

Dr. Timothy James Niesen 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 ID2961645122

PECOS Enrollment IDI20170821003395, I20210713000489

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 Timothy Niesen reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Christiana Care Health Services, Inc

Same address

Neurology

4755 OGLETOWN STANTON RD
Newark, DE 19718

Reassigned Medicare billing, Delaware and Pennsylvania enrollments
Also billed through NPI 1942553615 (Delaware), NPI 1952335556 (Pennsylvania), NPI 1609409861 (Pennsylvania)
1,531 clinicians in this Medicare group

NPI 1104896596 (302) 733-2536

Christiana Care Pennsylvania Inc

13 mi

Cardiovascular Disease

161 WILMINGTON W CHESTER PIKE
Chadds Ford, PA 19317

Reassigned Medicare billing, Pennsylvania enrollment
217 clinicians in this Medicare group

NPI 1013740745 (610) 361-1144

Mercy Diagnostic Imaging PC

27 mi

Diagnostic Radiology

1500 LANSDOWNE AVE
Darby, PA 19023

Reassigned Medicare billing, Pennsylvania enrollment
52 clinicians in this Medicare group

NPI 1477509768 (610) 237-4814

University Of Penn-Medical Group

28 mi

Surgery

1001 CHESTERBROOK BLVD, 3RD FLOOR
Berwyn, PA 19312

Reassigned Medicare billing, Pennsylvania enrollment
3,488 clinicians in this Medicare group

NPI 1396133559 (610) 576-7500

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 66

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.

3,000 services30 patients

X-ray of chest, 1 view 71045

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.

1,190 services975 patients

X-ray of chest, 2 views 71046

A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.

895 services858 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.

368 services358 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.

252 services249 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.

192 services190 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.

163 services161 patients

Ct scan of chest without contrast 71250

114 services110 patients

Ct scan of blood vessels of chest with contrast 71275

A CT scan of the chest with contrast is a non-invasive imaging test. It uses X-rays and a special dye to get detailed images of your blood vessels in the chest. This helps in diagnosing conditions related to heart and lungs.

112 services111 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.

110 services98 patients

Ct scan of chest with contrast 71260

101 services97 patients

Ct scan of abdomen and pelvis with contrast 74177

101 services97 patients

X-ray of abdomen, 1 view 74018

An X-ray of the abdomen, 1 view, is a quick and painless imaging test. It uses a small amount of radiation to produce images of the structures in your abdomen, such as the stomach, liver, and intestines. This can help identify issues like blockages, infections, or injuries.

98 services98 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.

97 services96 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.

91 services84 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.

90 services82 patients

X-ray of chest, 2 views 71046

86 services85 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.

74 services69 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.

73 services70 patients

X-ray of hip, 1 view 73501

An X-ray of the hip, 1 view, is a quick, painless test where a small amount of radiation is used to produce images of the hip joint. This helps in diagnosing conditions like arthritis or fractures. You'll be positioned so that the X-ray machine can capture the best image of your hip.

71 services68 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.

69 services58 patients

Review by radiologist of ct guidance for needle placement 77012

This process involves a radiologist examining CT scan images to accurately guide a needle's placement within the body. This technique is often used for biopsies or treatments, ensuring precision and safety.

67 services65 patients

Ct scan of blood vessels of abdomen and pelvis with contrast 74174

A CT scan of the abdomen and pelvis with contrast is a medical imaging procedure. A special dye, called contrast, is used to make blood vessels more visible. The scan produces detailed images of your abdomen and pelvis, helping doctors to diagnose conditions or plan treatments.

57 services57 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.

56 services55 patients

Ct scan of abdomen and pelvis without contrast 74176

54 services52 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.

53 services53 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.

52 services52 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.

48 services43 patients

X-ray of ankle, 2 views 73600

An X-ray of the ankle, 2 views, is a quick, painless test that produces images of the bones and joints in your ankle. Two different angles are used to provide a more complete picture. It helps detect fractures, sprains, arthritis, or other abnormalities. It's safe and typically takes only a few minutes.

48 services43 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.

46 services46 patients

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

39 services39 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.

37 services32 patients

X-ray of elbow, 2 views 73070

An elbow X-ray, 2 views, is a quick, painless imaging test. It uses a small amount of radiation to produce detailed images of your elbow from two different angles. This helps in diagnosing conditions like fractures, infection, or arthritis. It's a safe and effective way to monitor your elbow health.

36 services34 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.

33 services33 patients

Ct scan of blood vessels and grafts of heart with contrast 75574

A CT scan of the heart's blood vessels and grafts with contrast is a diagnostic test. A special dye (contrast) is injected into your veins, which helps create clear images of your heart's vessels and grafts. This helps doctors detect blockages or other abnormalities.

29 services29 patients

Fine needle aspiration biopsy using ultrasound guidance, first growth 10005

Fine needle aspiration biopsy with ultrasound guidance is a procedure where a thin needle is inserted into a growth to extract a small sample. Ultrasound helps accurately locate the growth. This sample is then analyzed to determine the nature of the growth.

28 services26 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.

28 services28 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.

27 services24 patients

Complete ultrasound scan behind abdominal cavity 76770

26 services26 patients

Needle biopsy of liver through skin 47000

A needle biopsy of the liver through skin is a procedure where a small tissue sample from your liver is collected using a thin needle. This is done to diagnose liver diseases or conditions. It involves inserting the needle through your skin and into your liver.

24 services24 patients

Ultrasound scan of head and neck soft tissue 76536

24 services24 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.

23 services20 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.

23 services23 patients

Single contrast x-ray of esophagus 74220

A single contrast x-ray of the esophagus is a non-invasive procedure where a radiopaque substance is swallowed to highlight the esophagus. This allows doctors to capture clear images of the area, aiding in the diagnosis of any abnormalities or issues.

23 services22 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.

22 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.

22 services22 patients

X-ray of abdomen, 1 view 74018

22 services22 patients

X-ray of shoulder, minimum of 2 views 73030

21 services18 patients

Imaging for evaluation of swallowing function 74230

This process, known as a swallowing study, uses imaging technology to view how food and liquid move from your mouth to your stomach. It helps identify any issues you may have swallowing, which can be crucial for determining the best treatment plan.

21 services21 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.

21 services21 patients

X-ray of foot, minimum of 3 views 73630

19 services16 patients

Complete ultrasound scan of abdomen 76700

18 services18 patients

Ultrasonic guidance for needle placement 76942

Ultrasonic guidance for needle placement is a technique where sound waves create images that help accurately position the needle during procedures. This method ensures precision, minimizes discomfort, and increases safety.

18 services18 patients

Ct scan of pelvis without contrast 72192

A CT scan of the pelvis without contrast is a non-invasive imaging test. It uses X-rays to create detailed pictures of your lower abdomen area. It helps in detecting issues like injuries, inflammation, or abnormal growths. It doesn't involve any dye injection.

17 services17 patients

Complete ultrasound scan of pelvis 76856

16 services16 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.

15 services15 patients

Needle biopsy of muscle 20206

A needle biopsy of muscle is a procedure where a small sample of muscle tissue is collected using a needle. This sample is then examined under a microscope to identify any abnormalities or diseases. The process is generally quick and minimally invasive.

14 services14 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.

14 services14 patients

X-ray of hip, 2-3 views 73502

14 services14 patients

X-ray of knee, 1-2 views 73560

14 services12 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.

14 services14 patients

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

12 services12 patients

X-ray of middle spine, 2 views 72070

12 services12 patients

X-ray of abdomen, minimum of 3 views 74021

An X-ray of the abdomen with a minimum of 3 views is a non-invasive imaging test. It uses a small amount of radiation to produce images of the structures inside your abdomen. This helps in diagnosing conditions related to the stomach, liver, spleen, and kidneys. It's quick and painless.

12 services12 patients

X-ray of hip, 1 view 73501

11 services11 patients

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

11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 19718 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

$88.37 typical visit price

range $57.12 – $173.08

Typical copayment $22.09 (range $14.28 – $43.27)

Most-billed visit code 99203

Established Patient

$71.19 typical visit price

range $18.36 – $141.05

Typical copayment $17.79 (range $4.59 – $35.26)

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.

Reported Quality Measures

Prevention of Central Venous Catheter (CVC) - Related Bloodstream Infections

Percentage of patients, regardless of age, who undergo central venous catheter (CVC) insertion for whom CVC was inserted with all elements of maximal sterile barrier technique, hand hygiene, skin preparation and, if ultrasound is used, sterile ultrasound…

100%77 patients

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

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.

ALICIA RENEE EDELBLUTE PA-C

Physician Assistant (Medical)

4755 OGLETOWN STANTON RD
NEWARK, DE 19718

New Castle County (610) 406-7662

ADEYOYIN R ESAKA FNP

Nurse Practitioner

4755 OGLETOWN STANTON RD, ROOM E1070 CENTER FOR HEART & VASCULAR HEALTH AT CHRIST
NEWARK, DE 19718

New Castle County (302) 623-1929

DR. SEPEHR SEDIGH HAGHIGHAT MD

Emergency Medicine

4755 OGLETOWN STANTON RD
NEWARK, DE 19718

New Castle County (302) 733-3901

ZAID A AMMARI M.D. M.P.H.

Internal Medicine (Cardiovascular Disease)

4755 OGLETOWN STANTON RD
NEWARK, DE 19718

New Castle County (302) 733-1000

MURIEL P JURASEVICH CRNP

Nurse Practitioner (Acute Care)

4755 OGLETOWN STANTON RD
NEWARK, DE 19718

New Castle County (302) 733-1000

JOHN ANDREW POLLOCK

Student in an Organized Health Care Education/Training Program

4755 OGLETOWN STANTON RD
NEWARK, DE 19718

New Castle County (800) 693-2273

MATTHEW JOSEPH HOMISHAK CRNA

Nurse Anesthetist, Certified Registered

4755 OGLETOWN STANTON RD
NEWARK, DE 19718

New Castle County (302) 733-1000

MR. THOMAS MICHAEL CARLSON MSN, CRNA

Nurse Anesthetist, Certified Registered

4755 OGLETOWN STANTON RD
NEWARK, DE 19718

New Castle County (302) 733-1000

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 Timothy Niesen's NPI number?

The NPI number for Timothy Niesen is 1780974105. It was assigned to this individual provider in the NPPES registry on April 19, 2011.

Where is Timothy Niesen located?

Timothy Niesen practices at 4755 Ogletown Stanton Rd, Newark, DE 19718. The listed phone number is (302) 733-1806.

What is Timothy Niesen's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Vascular & Interventional Radiology, with taxonomy code 2085R0204X.

Is Timothy Niesen enrolled in Medicare?

Yes. Timothy Niesen 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 Timothy Niesen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Timothy Niesen reassigns Medicare benefits to 4 organizations: Christiana Care Health Services, Inc (Newark, DE), Christiana Care Pennsylvania Inc (Chadds Ford, PA), Mercy Diagnostic Imaging PC (Darby, PA) and University Of Penn-Medical Group (Berwyn, PA). 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 Timothy Niesen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Timothy Niesen was last updated on July 7, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.