DR. JOHN FRANCIS GUYNAN M.D.
NPI 1003227398
Radiology - Diagnostic Radiology in Omaha, NE

Q: What is John Guynan's NPI number?

The NPI number for John Guynan is 1003227398. It was assigned to this individual provider in the NPPES registry on May 8, 2014.

Q: What is John Guynan'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 John Guynan was last updated on July 9, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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 May 08, 2014PECOS EnrolledAccepts Medicare Assignment

7500 MERCY RD, OMAHA, NE 68124(402) 597-8775(402) 597-8811 Get Directions Write a Review

NPPES record last updated: July 9, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Dr. John Francis Guynan M.d. NPPES

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

DR. JOHN FRANCIS GUYNAN M.D. (NPI 1003227398) is an individual diagnostic radiology provider in Omaha, Nebraska, licensed in Nebraska (32481) and active in the NPI registry since May 2014. He is enrolled in Medicare PECOS, is affiliated with Chi Health St. Elizabeth, and is a graduate of University Of Nebraska College Of Medicine (2014).

NPPES Registry Identity

NPI1003227398

Entity TypeIndividualMale

Primary Taxonomy2085R0202X

Provider Legal NameDR. JOHN FRANCIS GUYNANCredential: M.D.

Location Address7500 MERCY RDOmaha, NE 68124-2319

Mailing Address14441 Dupont Ct Ste 304Omaha, NE 68144-2107 · (402) 597-8775 · Fax (402) 597-8811

Phone(402) 597-8775

Fax(402) 597-8811

Sole ProprietorNo

Medical School CMSUniversity Of Nebraska College Of MedicineGraduated 2014

Enumeration DateMay 8, 2014

Last NPPES UpdateJuly 9, 2020

NPPES CertifiedJuly 9, 2020

✔ NPI 1003227398 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0202X

License✔ Licensed in NE · 32481

Definition

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

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

7500 MERCY RD, Omaha, NE 68124

Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Nebraska, Oscar Insurance Company, Wellmark Health Plan of Iowa, Inc..Insurance ›

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. John Francis Guynan 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 ID2264734698

PECOS Enrollment IDI20200616001064, I20200616001498

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 John Guynan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Think Aksarben, LLC

0.5 mi

Multi-Specialty

7100 W CENTER RD
Omaha, NE 68106

Reassigned Medicare billing, Nebraska enrollment
138 clinicians in this Medicare group

NPI 1316357676 (402) 506-9000

Radiology Consultants PC

3.6 mi

Diagnostic Radiology

11902 W CENTER RD STE 200
Omaha, NE 68144

Reassigned Medicare billing, Iowa and Nebraska enrollments
47 clinicians in this Medicare group

NPI 1215969407 (402) 398-6198

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 36

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.

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.

382 services352 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.

176 services173 patients

Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes 99152

This procedure involves a doctor administering a medication to reduce your consciousness during a procedure. This helps in managing discomfort and anxiety. The initial application lasts for 15 minutes and is for individuals aged 5 years or older.

132 services128 patients

X-ray of chest, 2 views 71046

125 services123 patients

Drainage of fluid from abdominal cavity using imaging guidance 49083

This procedure involves removing excess fluid from your abdominal cavity, which can relieve discomfort. A specialist uses imaging technology to guide a thin needle into the right spot. The fluid is then drained out safely.

55 services33 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.

51 services49 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.

45 services45 patients

Low dose ct scan of chest for lung cancer screening 71271

A low-dose CT scan of the chest is a quick, painless procedure that uses a small amount of radiation to create detailed images of your lungs. It's a key tool for early detection of lung cancer, especially for those at high risk.

44 services44 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.

44 services44 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.

41 services41 patients

Ultrasonic guidance for blood vessel access 76937

Ultrasonic guidance for blood vessel access is a medical procedure where sound waves are used to create images of your blood vessels. This helps doctors to accurately locate and access the vessels for treatments or tests, ensuring safety and precision.

32 services31 patients

Injection of contrast through abdominal cavity tube for x-ray study 49424

This procedure involves injecting a contrast substance through a tube in your abdominal cavity. This helps to highlight certain areas in your body for an X-ray study. It's a crucial step for accurate diagnosis and treatment planning.

29 services19 patients

Review by radiologist of abscess or sinus cavity study 76080

This procedure involves a specialist, known as a radiologist, examining images of your abscess or sinus cavity. These images help identify any problems or changes in your condition. The radiologist's review is crucial in determining the best course of treatment.

28 services19 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.

27 services27 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.

24 services21 patients

Fluoroscopic guidance for insertion or removal of central vein access device 77001

Fluoroscopic guidance for central vein access device insertion or removal is a procedure where a special X-ray, called a fluoroscope, is used to help accurately place or remove a device in a central vein. This device aids in delivering medications or collecting blood samples.

24 services23 patients

Fluoroscopic guidance for needle placement 77002

Fluoroscopic guidance for needle placement is a medical procedure that uses a special X-ray technology to help accurately place a needle in the body. It's often used in biopsies, injections or other treatments to ensure precision and safety.

24 services24 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.

24 services24 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.

23 services23 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.

21 services21 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.

20 services20 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.

19 services19 patients

Ct scan of abdominal aorta and both leg arteries with contrast 75635

A CT scan of the abdominal aorta and both leg arteries with contrast is a medical imaging procedure. A special dye is injected to make your blood vessels visible on the scan. This helps to check for any blockages or abnormalities in these areas.

17 services17 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.

16 services16 patients

Insertion of central venous tube with port (5 years or older) 36561

A central venous tube with port is a small, flexible tube inserted into a large vein, usually in the chest. It allows for easy administration of medication, fluids, or blood products over a long period. A port is attached under the skin for easy access. It's safe for individuals aged 5 and above.

15 services15 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.

14 services14 patients

Aspiration of fluid from chest cavity using imaging guidance 32555

This procedure, known as a thoracentesis, involves removing fluid from the space between the lungs and chest wall, called the pleural space. It's performed under imaging guidance to ensure precision. It can help diagnose conditions or relieve symptoms like shortness of breath.

13 services12 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.

13 services13 patients

Aspiration and/or injection of fluid from large joint 20610

This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.

12 services12 patients

Removal of spinal fluid with lower back spinal tap for diagnostic test using imaging guidance 62328

A lower back spinal tap, guided by imaging, is a procedure to collect spinal fluid for testing. A needle is carefully inserted into the lower back to draw out fluid. This can help diagnose various conditions. It's performed under local anesthesia to minimize discomfort.

12 services12 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.

12 services12 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.

12 services12 patients

Ultrasound scan of abdominal aorta 76706

An ultrasound scan of the abdominal aorta is a non-invasive imaging test. It uses sound waves to create pictures of the main blood vessel in your abdomen, the aorta, to check its size and shape. This helps detect any abnormalities or issues early.

12 services12 patients

Ultrasound of both sides of head and neck blood flow 93880

An ultrasound of the head and neck blood flow is a safe, non-invasive procedure that uses sound waves to create images of blood vessels. It helps detect abnormalities like blockages or clots, ensuring optimal blood flow.

12 services12 patients

Ultrasound of leg arteries or artery grafts 93925

An ultrasound of leg arteries or artery grafts is a non-invasive imaging test. It uses high-frequency sound waves to capture live images from inside your body, specifically your leg arteries or grafts. This helps in detecting any blockages or abnormalities.

12 services11 patients

Placement of tube of kidney using imaging guidance with review by radiologist 50432

This procedure involves the insertion of a tube into your kidney using imaging technology for precision. A radiologist, a doctor specializing in medical imaging, will review the process. This can help with kidney function and drainage.

11 services11 patients

Hospital Affiliations CMS Care Compare 5

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

Chi Health St. Elizabeth

Acute Care Hospitals · Lincoln, NE

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number280020

Location555 South 70th StLincoln, NE 68510 · Lancaster County

Emergency services Birthing friendly

Chi Health Bergan Mercy

Acute Care Hospitals · Omaha, NE

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number280060

Location7500 Mercy RdOmaha, NE 68124 · Douglas County

Emergency services Birthing friendly

Chi Health Immanuel

Acute Care Hospitals · Omaha, NE

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number280081

Location6901 North 72nd StOmaha, NE 68122 · Douglas County

Emergency services Birthing friendly

Chi Health Nebraska Heart

Acute Care Hospitals · Lincoln, NE

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number280128

Location7500 South 91st StLincoln, NE 68526 · Lancaster County

Chi Health Lakeside

Acute Care Hospitals · Omaha, NE

5/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number280130

Location16901 Lakeside Hills CtOmaha, NE 68130 · Douglas County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 68124 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

$81.20 typical visit price

range $52.69 – $160.21

Typical copayment $20.30 (range $13.17 – $40.05)

Most-billed visit code 99203

Established Patient

$66.00 typical visit price

range $16.90 – $131.25

Typical copayment $16.50 (range $4.22 – $32.81)

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.

MATTHEW JOHN KAPALIS DO

Internal Medicine (Clinical Cardiac Electrophysiology)

7500 MERCY RD
OMAHA, NE 68124

Douglas County (402) 398-6255

OLIVIA B TEDESCO APRN

Nurse Practitioner (Neonatal, Critical Care)

7500 MERCY RD
OMAHA, NE 68124

Douglas County (402) 398-6014

AUSTIN TYLER CAMPBELL CRNA

Nurse Anesthetist, Certified Registered

7500 MERCY RD
OMAHA, NE 68124

Douglas County (402) 398-6060

MS. ELISE ANN PLAUTZ APRN

Nurse Practitioner

7500 MERCY RD
OMAHA, NE 68124

Douglas County (402) 398-6060

JASON CROMER CRNA

Nurse Anesthetist, Certified Registered

7500 MERCY RD
OMAHA, NE 68124

Douglas County (402) 398-6060

ZACHARY KNICKY

Nurse Anesthetist, Certified Registered

7500 MERCY RD
OMAHA, NE 68124

Douglas County (402) 398-6060

DR. SAHIL MULLICK M.D.

Hospitalist

7500 MERCY RD, CU DEPARTMENT OF FAMILY MEDICINE
OMAHA, NE 68124

Douglas County (855) 524-4001

SARAH R MAYHUE APRN

Nurse Practitioner (Neonatal, Critical Care)

7500 MERCY RD
OMAHA, NE 68124

Douglas County (402) 212-0903

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 John Guynan's NPI number?

The NPI number for John Guynan is 1003227398. It was assigned to this individual provider in the NPPES registry on May 8, 2014.

Where is John Guynan located?

John Guynan practices at 7500 Mercy Rd, Omaha, NE 68124. The listed phone number is (402) 597-8775.

What is John Guynan's specialty?

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

Is John Guynan enrolled in Medicare?

Yes. John Guynan 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 John Guynan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John Guynan reassigns Medicare benefits to 2 organizations: Think Aksarben, LLC (Omaha, NE) and Radiology Consultants PC (Omaha, NE). 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 John Guynan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does John Guynan accept?

Health plans from Blue Cross and Blue Shield of Nebraska, Oscar Insurance Company and Wellmark Health Plan of Iowa, Inc. list John Guynan as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is John Guynan affiliated with any hospitals?

According to CMS data, John Guynan is affiliated with Chi Health St. Elizabeth, Chi Health Bergan Mercy, Chi Health Immanuel, Chi Health Nebraska Heart and Chi Health Lakeside.

When was this NPI record last updated?

The NPPES record for John Guynan was last updated on July 9, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.