STEWART B KARR MD
NPI 1477567022
Radiology - Diagnostic Radiology in Silver Spring, MD

Active since July 28, 2006PECOS EnrolledAccepts Medicare Assignment
2121 MEDICAL PARK DRIVE, SUITE 3, SILVER SPRING, MD 20902(501) 681-3003(301) 681-5868 Get Directions Write a Review

NPPES record last updated: May 7, 2008. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Stewart B Karr Md NPPES

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

STEWART B KARR MD (NPI 1477567022) is an individual diagnostic radiology provider in Silver Spring, Maryland, licensed in Maryland (D0035868) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Johns Hopkins Hospital, The, and is a graduate of Other (1986).

NPPES Registry Identity

NPI1477567022
Entity TypeIndividualMale
Primary Taxonomy2085R0202X
Provider Legal NameSTEWART B KARRCredential: MD
Location Address2121 MEDICAL PARK DRIVE, SUITE 3Silver Spring, MD 20902
Mailing Address4718 Carr Drive, Per Se Technologies Ellie ConleyFredericksburg, VA 22408 · (540) 891-5764 · Fax (540) 891-5769
Fax(301) 681-5868
Sole ProprietorNo
Medical School CMSOtherGraduated 1986
Enumeration DateJuly 28, 2006
Last NPPES UpdateMay 7, 2008
NPI 1477567022 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 MD · D0035868
Definition
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
2121 MEDICAL PARK DRIVE, Silver Spring, MD 20902

Other Identifiers 7

Other80430026DC · Blue Shield
Medicare PINFMX026
Other60234801MD · Blue Shield
Medicare PIN671726D85DC
Medicare UPINF16431
Medicaid152651100MD
Medicare PIN008912C85DC

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

Stewart B Karr 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 ID1052217692
PECOS Enrollment IDI20101116000583, I20151030000597
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 38

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.
433 services367 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.
221 services213 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.
209 services206 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.
114 services110 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.
104 services102 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.
88 services87 patients

Hospital Affiliations CMS Care Compare 3

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

Johns Hopkins Hospital, The

Acute Care Hospitals · Baltimore, MD
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number210009
Location600 North Wolfe StreetBaltimore, MD 21287 · Baltimore City County
Emergency services Birthing friendly

Adventist Healthcare White Oak Medical Center

Acute Care Hospitals · Silver Spring, MD
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number210016
Location11890 Healing WaySilver Spring, MD 20904 · Montgomery County
Emergency services Birthing friendly

Johns Hopkins Howard County Medical Center

Acute Care Hospitals · Columbia, MD
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number210048
Location5755 Cedar LaneColumbia, MD 21044 · Howard County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20902 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
$100.31 typical visit price
range $65.18 – $194.86
Typical copayment $25.07 (range $16.29 – $48.71)
Most-billed visit code 99203
Established Patient
$80.66 typical visit price
range $21.40 – $158.88
Typical copayment $20.16 (range $5.35 – $39.72)
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 8

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

Radiology (Diagnostic Radiology)
2121 MEDICAL PARK DRIVE, SUITE 3
SILVER SPRING, MD 20902
Radiology (Diagnostic Radiology)
2121 MEDICAL PARK DRIVE, SUITE 3
SILVER SPRING, MD 20902
Radiology (Diagnostic Radiology)
2121 MEDICAL PARK DRIVE, SUITE 3
SILVER SPRING, MD 20902
Radiology (Diagnostic Radiology)
2121 MEDICAL PARK DRIVE, SUITES 1 & 2
SILVER SPRING, MD 20902
Radiology (Diagnostic Radiology)
2121 MEDICAL PARK DRIVE, SUITE 3
SILVER SPRING, MD 20902
Radiology (Diagnostic Radiology)
2121 MEDICAL PARK DRIVE, SUITE 3
SILVER SPRING, MD 20902
Radiology (Diagnostic Radiology)
2121 MEDICAL PARK DRIVE, SUITE 3
SILVER SPRING, MD 20902
Radiology (Diagnostic Radiology)
2121 MEDICAL PARK DRIVE, SUITE 3
SILVER SPRING, MD 20902

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 Stewart Karr's NPI number?

The NPI number for Stewart Karr is 1477567022. It was assigned to this individual provider in the NPPES registry on July 28, 2006.

Where is Stewart Karr located?

Stewart Karr practices at 2121 Medical Park Drive Suite 3, Silver Spring, MD 20902. The listed phone number is (501) 681-3003.

What is Stewart Karr's specialty?

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

Is Stewart Karr enrolled in Medicare?

Yes. Stewart Karr 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.

Is Stewart Karr affiliated with any hospitals?

According to CMS data, Stewart Karr is affiliated with Johns Hopkins Hospital, The, Adventist Healthcare White Oak Medical Center and Johns Hopkins Howard County Medical Center.

When was this NPI record last updated?

The NPPES record for Stewart Karr was last updated on May 7, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.