JOHN P. MACKRELL MD
NPI 1447426499
Radiology - Diagnostic Radiology in Philadelphia, PA

Q: What is John Mackrell's NPI number?

The NPI number for John Mackrell is 1447426499. It was assigned to this individual provider in the NPPES registry on April 30, 2008.

Q: What is John Mackrell'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 Mackrell was last updated on July 25, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since April 30, 2008PECOS EnrolledAccepts Medicare Assignment

78.87/100

CMS Quality Rating

3998 RED LION ROAD, PHILADELPHIA, PA 19114(952) 595-1301(612) 294-4903 Get Directions Write a Review

NPPES record last updated: July 25, 2012. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About John P. Mackrell Md NPPES

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

JOHN P. MACKRELL MD (NPI 1447426499) is an individual diagnostic radiology provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (MD437887) and active in the NPI registry since April 2008. He is enrolled in Medicare PECOS, is affiliated with Medstar Franklin Square Medical Center, and is a graduate of Temple University School Of Medicine (2003).

NPPES Registry Identity

NPI1447426499

Entity TypeIndividualMale

Primary Taxonomy2085R0202X

Provider Legal NameJOHN P. MACKRELLCredential: MD

Location Address3998 RED LION ROADPhiladelphia, PA 19114-1436

Mailing Address11995 Singletree Ln, Suite 500Eden Prairie, MN 55344-5347 · (952) 595-1301 · Fax (612) 294-4903

Phone(952) 595-1301

Fax(612) 294-4903

Sole ProprietorNo

Medical School CMSTemple University School Of MedicineGraduated 2003

Enumeration DateApril 30, 2008

Last NPPES UpdateJuly 25, 2012

✔ NPI 1447426499 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0202X

Licenses✔ Licensed in PA · MD437887✔ Licensed in NJ · 25MA08727800

Definition

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

Also ListedRadiology · Body ImagingTaxonomy 2085B0100X · License 25MA08727800 (NJ), MD437887 (PA)

3998 RED LION ROAD, Philadelphia, PA 19114

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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

John P. Mackrell 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 ID5193864445

PECOS Enrollment IDI20111109000517, I20160620001622

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 Mackrell reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Precision Diagnostic Radiology LLC

13 mi

Diagnostic Radiology

5800 RIDGE AVE
Philadelphia, PA 19128

Reassigned Medicare billing, District of Columbia and Maryland enrollments

NPI 1558053181 (215) 483-9900

Union Hospital Of Cecil County, Inc.

55 mi

Urology

137 W HIGH ST STE 2B
Elkton, MD 21921

Reassigned Medicare billing, Maryland and District of Columbia enrollments
Also billed through NPI 1124067848 (District of Columbia)
512 clinicians in this Medicare group

NPI 1407607450 (410) 398-0451

Physician Imaging Of Washington Hospital Center, LLC

82 mi

Radiology

12 MEDSTAR BLVD
Bel Air, MD 21015

Reassigned Medicare billing, District of Columbia and Maryland enrollments
156 clinicians in this Medicare group

NPI 1700246022 (301) 209-5700

Medstar Medical Group II LLC

99 mi

General Practice

5601 LOCH RAVEN BLVD, RUSSELL MORGAN BLDG 3RD FL
Baltimore, MD 21239

Reassigned Medicare billing, District of Columbia and Maryland enrollments
3,530 clinicians in this Medicare group

NPI 1184046187 (443) 444-5606

Medstar Medical Group Radiology, LLC

134 mi

Diagnostic Radiology

110 IRVING ST NW
Washington, DC 20010

Reassigned Medicare billing, District of Columbia and Maryland enrollments
178 clinicians in this Medicare group

NPI 1326450156 (301) 902-1073

Medstar Medical Group - Southern Maryland LLC

147 mi

Internal Medicine

24035 THREE NOTCH ROAD
Hollywood, MD 20636

Reassigned Medicare billing, Maryland enrollment
307 clinicians in this Medicare group

NPI 1831592211 (301) 373-7900

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 51

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.

478 services336 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.

373 services353 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.

244 services234 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.

237 services227 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.

200 services139 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.

168 services163 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.

148 services143 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.

123 services90 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.

121 services119 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.

90 services81 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.

89 services82 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.

78 services75 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.

69 services69 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.

69 services68 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.

68 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.

67 services49 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.

64 services48 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.

62 services62 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.

51 services45 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 services46 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.

49 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 services44 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.

46 services43 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.

40 services36 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.

39 services39 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.

37 services35 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.

34 services34 patients

Ultrasound study of arm and leg arteries 93922

An ultrasound study of arm and leg arteries is a non-invasive procedure that uses sound waves to create images of your arteries. It helps in checking blood flow, identifying blockages, or detecting other abnormalities in your arteries.

34 services32 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.

32 services24 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.

28 services18 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.

27 services27 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.

24 services24 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.

22 services22 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 services21 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.

21 services17 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.

20 services19 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.

20 services19 patients

Complete ultrasound study of arm and leg arteries 93923

This procedure involves using sound waves to produce images of your arm and leg arteries. It helps identify blockages or abnormalities that could lead to conditions like stroke or peripheral artery disease. It's non-invasive and painless.

18 services18 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.

17 services17 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.

16 services15 patients

Limited ultrasound scan behind abdominal cavity 76775

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

16 services16 patients

Ct scan of face without contrast 70486

A CT scan of the face without contrast is a non-invasive imaging procedure. It uses X-rays to create detailed pictures of your face, including bones, soft tissues, and blood vessels. It's often used to diagnose diseases, injuries, or abnormalities. No contrast dye is used in this procedure.

15 services15 patients

Ct scan of blood vessels of neck with contrast 70498

A CT scan of the neck's blood vessels with contrast is a diagnostic procedure. It uses X-rays and a special dye to create detailed images of your neck's blood vessels. This helps doctors detect issues such as blockages or abnormalities.

15 services15 patients

Ct scan of blood vessels of head with contrast 70496

A CT scan of the head's blood vessels with contrast is a diagnostic procedure. A special dye (contrast) is injected into your body to make the blood vessels visible on the scan. This helps identify issues like blockages or abnormalities in your head's blood vessels.

14 services14 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.

14 services13 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.

13 services13 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.

13 services12 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.

12 services12 patients

Ultrasound scan of scrotum 76870

An ultrasound scan of the scrotum is a non-invasive imaging test. It uses sound waves to create pictures of the structures within the lower abdominal area. This helps to assess any discomfort or abnormalities you might be experiencing. The procedure is safe and painless.

12 services11 patients

Ultrasound of one leg arteries or artery grafts 93926

An ultrasound of leg arteries or artery grafts is a non-invasive test using sound waves to create images of your blood vessels. This helps doctors assess blood flow, identify blockages, and monitor the health of grafts.

12 services11 patients

X-ray of both hips, minimum of 5 views 73523

An X-ray of both hips with a minimum of 5 views is a non-invasive imaging test. It uses a small amount of radiation to produce images of the hip joints from different angles. This aids in diagnosing conditions such as fractures, arthritis, or other hip abnormalities.

11 services11 patients

Hospital Affiliations CMS Care Compare 4

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

Medstar Franklin Square Medical Center

Acute Care Hospitals · Rosedale, MD

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210015

Location9000 Franklin Square DriveRosedale, MD 21237 · Baltimore County

Emergency services Birthing friendly

Medstar Montgomery Medical Center

Acute Care Hospitals · Olney, MD

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210018

Location18101 Prince Philip DriveOlney, MD 20832 · Montgomery County

Emergency services Birthing friendly

Union Hospital Of Cecil County

Acute Care Hospitals · Elkton, MD

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210032

Location106 Bow StreetElkton, MD 21921 · Cecil County

Birthing friendly

Roxborough Memorial Hospital

Acute Care Hospitals · Philadelphia, PA

4/5 CMS rating

OwnershipProprietary

CMS Certification Number390304

Location5800 Ridge AvePhiladelphia, PA 19128 · Philadelphia County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 19114 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

$92.69 typical visit price

range $59.88 – $180.99

Typical copayment $23.17 (range $14.97 – $45.24)

Most-billed visit code 99203

Established Patient

$74.47 typical visit price

range $19.30 – $147.29

Typical copayment $18.61 (range $4.82 – $36.82)

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.

78.87/100

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

Scored as part of a group practice

Quality

79.2

Promoting Interoperability

Improvement Activities

Cost

57.04

Other Providers at the Same Location NPPES 18

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ARIA HEALTH PHYSICIAN SERVICES

Obstetrics & Gynecology

3998 RED LION ROAD
PHILADELPHIA, PA 19114

Philadelphia County (215) 612-4000

STEVEN M GELLER DO

Internal Medicine (Pulmonary Disease)

3998 RED LION ROAD, SUITE 250
PHILADELPHIA, PA 19114

Philadelphia County (215) 612-8500

TODD MAKLER MD

Radiology (Vascular & Interventional Radiology)

3998 RED LION ROAD
PHILADELPHIA, PA 19114

Philadelphia County (215) 612-4021

KARTIK J. SHAH MD

Radiology (Diagnostic Radiology)

3998 RED LION ROAD
PHILADELPHIA, PA 19114

Philadelphia County (215) 612-4021

JOEL PAUL MILLER D.O.

Internal Medicine (Cardiovascular Disease)

3998 RED LION ROAD, SUITE 207
PHILADELPHIA, PA 19114

Philadelphia County (215) 824-2859

SEGAL AARONSON PULMONARY ASSOCIATES PC

Internal Medicine (Pulmonary Disease)

3998 RED LION ROAD, SUITE 250
PHILADELPHIA, PA 19114

Philadelphia County (215) 612-8500

MARK W. CASTALDI MD

Radiology (Diagnostic Radiology)

3998 RED LION ROAD
PHILADELPHIA, PA 19114

Philadelphia County (952) 595-1100

ROBERT L LANTIERI MD

Radiology (Diagnostic Radiology)

3998 RED LION ROAD
PHILADELPHIA, PA 19114

Philadelphia County (215) 612-4021

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 Mackrell's NPI number?

The NPI number for John Mackrell is 1447426499. It was assigned to this individual provider in the NPPES registry on April 30, 2008.

Where is John Mackrell located?

John Mackrell practices at 3998 Red Lion Road, Philadelphia, PA 19114. The listed phone number is (952) 595-1301.

What is John Mackrell's specialty?

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

Is John Mackrell enrolled in Medicare?

Yes. John Mackrell 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 Mackrell's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John Mackrell reassigns Medicare benefits to 6 organizations: Precision Diagnostic Radiology LLC (Philadelphia, PA), Union Hospital Of Cecil County, Inc. (Elkton, MD), Physician Imaging Of Washington Hospital Center, LLC (Bel Air, MD), Medstar Medical Group II LLC (Baltimore, MD), Medstar Medical Group Radiology, LLC (Washington, DC) and 1 more organization, listed in the Medicare section above. 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 Mackrell's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is John Mackrell affiliated with any hospitals?

According to CMS data, John Mackrell is affiliated with Medstar Franklin Square Medical Center, Medstar Montgomery Medical Center, Union Hospital Of Cecil County and Roxborough Memorial Hospital.

When was this NPI record last updated?

The NPPES record for John Mackrell was last updated on July 25, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.