MARK WILLIAM KEENAN MD
NPI 1932199742
Radiology - Diagnostic Radiology in Macon, GA

Q: What is Mark Keenan's NPI number?

The NPI number for Mark Keenan is 1932199742. It was assigned to this individual provider in the NPPES registry on October 24, 2005.

Q: Where is Mark Keenan located?

Mark Keenan practices at 770 Pine St Ste 290 Attn: Radiology Department, Macon, GA 31201. The listed phone number is (478) 743-1458.

Q: What is Mark Keenan's specialty?

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

Q: Is Mark Keenan enrolled in Medicare?

Yes. Mark Keenan 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.

Q: What insurance does Mark Keenan accept?

Health plans from Alliant Health Plans, Inc. list Mark Keenan 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.

Q: Is Mark Keenan affiliated with any hospitals?

According to CMS data, Mark Keenan is affiliated with Atrium Health Navicent The Medical Center, Navicent Health Baldwin, Coliseum Medical Centers, LLC, Dba, Piedmont Macon North Hospital and Atrium Health Navicent Peach.

Q: When was this NPI record last updated?

The NPPES record for Mark Keenan was last updated on July 3, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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 October 24, 2005PECOS EnrolledAccepts Medicare Assignment

75/100

CMS Quality Rating

770 PINE ST STE 290, ATTN: RADIOLOGY DEPARTMENT, MACON, GA 31201(478) 743-1458(478) 755-1332 Get Directions Write a Review

NPPES record last updated: July 3, 2014. Verified against the NPPES registry weekly; last sync: August 09, 2026.

On this page

About Mark William Keenan Md NPPES

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

MARK WILLIAM KEENAN MD (NPI 1932199742) is an individual diagnostic radiology provider in Macon, Georgia, licensed in Georgia (40436) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS, is affiliated with Atrium Health Navicent The Medical Center, and is a graduate of University Of Maryland School Of Medicine (1993).

NPPES Registry Identity

NPI1932199742

Entity TypeIndividualMale

Primary Taxonomy2085R0202X

Provider Legal NameMARK WILLIAM KEENANCredential: MD

Location Address770 PINE ST STE 290, ATTN: RADIOLOGY DEPARTMENTMacon, GA 31201-7516

Mailing Address770 Pine St Ste 290, Attn: Radiology DepartmentMacon, GA 31201-7516 · (478) 743-1458 · Fax (478) 755-1332

Phone(478) 743-1458

Fax(478) 755-1332

Sole ProprietorNo

Medical School CMSUniversity Of Maryland School Of MedicineGraduated 1993

Enumeration DateOctober 24, 2005

Last NPPES UpdateJuly 3, 2014

✔ NPI 1932199742 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 GA · 40436

Definition

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

770 PINE ST STE 290, Macon, GA 31201

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Other Identifiers 3

Medicare UPING70229

Medicaid000817341BGA

Medicare PIN30BDHKSGA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Alliant Health Plans, Inc..Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mark William Keenan 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 ID7416855341

PECOS Enrollment IDI20031230000101

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.

Areas of Expertise CMS Part B claims 44

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.

811 services661 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.

310 services208 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.

267 services182 patients

Ct scan head or brain without contrast 70450

A CT scan of the head or brain without contrast is a non-invasive imaging procedure. It uses X-rays to create detailed pictures of your brain, skull, and other structures inside your head. It helps to detect conditions like strokes, tumors, or injuries. No dye (contrast) is used in this test.

215 services208 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.

151 services148 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.

135 services103 patients

Ct scan of chest without contrast 71250

103 services102 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.

102 services95 patients

Ct scan of abdomen and pelvis with contrast 74177

102 services102 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.

79 services78 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.

75 services75 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.

73 services72 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.

68 services68 patients

Ct scan of abdomen and pelvis without contrast 74176

64 services40 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.

62 services62 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.

49 services48 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.

48 services47 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.

46 services46 patients

X-ray of chest, 2 views 71046

39 services38 patients

Ct scan of soft tissue of neck with contrast 70491

A CT scan of the neck with contrast is a non-invasive imaging procedure. A special dye is administered to highlight the soft tissues in your neck, making them easier to see. This helps detect issues like infections, tumors, or other abnormalities.

37 services28 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.

37 services37 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.

33 services33 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.

33 services31 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.

33 services33 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.

32 services32 patients

Ct scan of chest with contrast 71260

30 services30 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.

27 services27 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.

25 services25 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.

23 services23 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.

23 services23 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.

22 services22 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.

22 services21 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.

20 services18 patients

Imaging of urinary tract following injection of a contrast agent 74420

This procedure involves injecting a contrast agent into your body to help highlight the urinary tract during imaging. The contrast agent makes your urinary tract more visible on the images, providing detailed information about its structure and function. This can help in diagnosing any potential issues.

18 services17 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.

17 services17 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.

15 services15 patients

X-ray of abdomen, 2 views 74019

An X-ray of the abdomen, 2 views, is a non-invasive imaging test. It uses a small amount of radiation to capture pictures of the structures inside your belly. The two views provide different angles, helping doctors see your organs clearly and detect any issues.

15 services15 patients

Core needle biopsy of lung or center cavity of chest (mediastinum), accessed through skin 32408

A core needle biopsy of the lung or mediastinum is a procedure where a small sample of tissue is collected using a needle inserted through the skin. This helps in diagnosing lung conditions or diseases in the chest's central cavity. It's a safe and minimally invasive process.

14 services14 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.

14 services13 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.

14 services14 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.

14 services13 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

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.

13 services11 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.

12 services12 patients

Hospital Affiliations CMS Care Compare 5

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

Atrium Health Navicent The Medical Center

Acute Care Hospitals · Macon, GA

1/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number110107

Location777 Hemlock StreetMacon, GA 31201 · Bibb County

Emergency services Birthing friendly

Navicent Health Baldwin

Acute Care Hospitals · Milledgeville, GA

1/5 CMS rating

OwnershipProprietary

CMS Certification Number110150

Location821 North Cobb StreetMilledgeville, GA 31061 · Baldwin County

Emergency services Birthing friendly

Coliseum Medical Centers, LLC, Dba

Acute Care Hospitals · Macon, GA

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number110164

Location350 Hospital DriveMacon, GA 31217 · Bibb County

Emergency services Birthing friendly

Piedmont Macon North Hospital

Acute Care Hospitals · Macon, GA

4/5 CMS rating

OwnershipProprietary

CMS Certification Number110201

Location400 Charter BoulevardMacon, GA 31210 · Bibb County

Emergency services

Atrium Health Navicent Peach

Critical Access Hospitals · Byron, GA

OwnershipGovernment - Hospital District or Authority

CMS Certification Number111310

Location1960 Highway 247 ConnectorByron, GA 31008 · Peach County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 31201 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

$83.23 typical visit price

range $53.31 – $164.04

Typical copayment $20.80 (range $13.32 – $41.01)

Most-billed visit code 99203

Established Patient

$66.89 typical visit price

range $16.68 – $133.24

Typical copayment $16.72 (range $4.17 – $33.31)

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.

75/100

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

Scored as part of a group practice

Reported Quality Measures

Appropriate Follow-up Imaging for Incidental Abdominal Lesions

Percentage of final reports for abdominal imaging studies for asymptomatic patients aged 18 years and older with one or more of the following noted incidentally with follow_up imaging recommended: - Liver lesion =< 0.5 cm - Cystic kidney lesion < 1.0 cm -…

Lower rates are better for this measure.

0%130 patients

Appropriate Follow-up Imaging for Incidental Thyroid Nodules in Patients

Percentage of final reports for computed tomography (CT), CT angiography (CTA) or magnetic resonance imaging (MRI) or magnetic resonance angiogram (MRA) studies of the chest or neck for patients aged 18 years and older with no known thyroid disease with a…

Lower rates are better for this measure.

0%33 patients

Radiation Consideration for Adult CT: Utilization of Dose Lowering Techniques

Percentage of final reports for patients aged 18 years and older undergoing CT with documentation that one or more of the following dose reduction techniques were used: - Automated exposure control - Adjustment of the mA and/or kV according to patient size -…

97%1,169 patients

Radiology: Stenosis Measurement in Carotid Imaging Reports

Percentage of final reports for carotid imaging studies (neck magnetic resonance angiography [MRA], neck computed tomography angiography [CTA], neck duplex ultrasound, carotid angiogram) performed that include direct or indirect reference to measurements of…

100%198 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.

BRADLEY ALAN EBEL DO

Radiology (Diagnostic Radiology)

770 PINE ST STE 290, ATTN: RADIOLOGY DEPARTMENT
MACON, GA 31201

Bibb County (478) 743-1458

MURRAY CHARLES RELF MD

Radiology (Diagnostic Radiology)

770 PINE ST STE 290, ATTN: RADIOLOGY DEPARTMENT
MACON, GA 31201

Bibb County (478) 743-1458

THOMAS FRANKLIN GLASS III MD

Radiology (Diagnostic Radiology)

770 PINE ST STE 290, ATTN: RADIOLOGY DEPARTMENT
MACON, GA 31201

Bibb County (478) 743-1458

RILEY ANN EUBANK PA-C

Physician Assistant

770 PINE ST STE 290
MACON, GA 31201

Bibb County (386) 984-2592

CAROL LYNN COLLINGS MD

Radiology (Diagnostic Radiology)

770 PINE ST STE 290, ATTN: RADIOLOGY DEPARTMENT
MACON, GA 31201

Bibb County (478) 743-1458

CHARLES DENNIS KELLUM MD

Radiology (Diagnostic Radiology)

770 PINE ST STE 290, ATTN: RADIOLOGY DEPARTMENT
MACON, GA 31201

Bibb County (478) 743-1458

ARTHUR HAMILTON MCCAIN MD

Radiology (Diagnostic Radiology)

770 PINE ST STE 290, ATTN: RADIOLOGY DEPARTMENT
MACON, GA 31201

Bibb County (478) 743-1458

LARRY ARTHUR SCHWARTZ JR. MD

Radiology (Diagnostic Radiology)

770 PINE ST STE 290, ATTN: RADIOLOGY DEPARTMENT
MACON, GA 31201

Bibb County (478) 743-1458

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 Mark Keenan's NPI number?

The NPI number for Mark Keenan is 1932199742. It was assigned to this individual provider in the NPPES registry on October 24, 2005.

Where is Mark Keenan located?

Mark Keenan practices at 770 Pine St Ste 290 Attn: Radiology Department, Macon, GA 31201. The listed phone number is (478) 743-1458.

What is Mark Keenan's specialty?

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

Is Mark Keenan enrolled in Medicare?

Yes. Mark Keenan 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.

What insurance does Mark Keenan accept?

Health plans from Alliant Health Plans, Inc. list Mark Keenan 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 Mark Keenan affiliated with any hospitals?

According to CMS data, Mark Keenan is affiliated with Atrium Health Navicent The Medical Center, Navicent Health Baldwin, Coliseum Medical Centers, LLC, Dba, Piedmont Macon North Hospital and Atrium Health Navicent Peach.

When was this NPI record last updated?

The NPPES record for Mark Keenan was last updated on July 3, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.