MS. SIOBHAN ESTHER ALEXANDER M.D.
NPI 1871988394
Radiology - Diagnostic Radiology in Roseville, MN

Q: What is Siobhan Alexander's NPI number?

The NPI number for Siobhan Alexander is 1871988394. It was assigned to this individual provider in the NPPES registry on April 1, 2015.

Q: What is Siobhan Alexander'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 Siobhan Alexander was last updated on August 29, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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 01, 2015PECOS EnrolledAccepts Medicare Assignment

85.61/100

CMS Quality Rating

2355 HWY 36 W, STE. 100, ROSEVILLE, MN 55113(651) 292-2000 Get Directions Write a Review

NPPES record last updated: August 29, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

On this page

About Ms. Siobhan Esther Alexander M.d. NPPES

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

MS. SIOBHAN ESTHER ALEXANDER M.D. (NPI 1871988394) is an individual diagnostic radiology provider in Roseville, Minnesota, licensed in Minnesota (79044) and active in the NPI registry since April 2015. She is enrolled in Medicare PECOS, is affiliated with Allina United Hospital, and is a graduate of University Of Iowa, Rj & L Carver College Of Medicine (2015).

NPPES Registry Identity

NPI1871988394

Entity TypeIndividualFemale

Primary Taxonomy2085R0202X

Provider Legal NameMS. SIOBHAN ESTHER ALEXANDERCredential: M.D.

Location Address2355 HWY 36 W, STE. 100Roseville, MN 55113

Mailing Address2355 Hwy 36 W, Ste. 100Roseville, MN 55113 · (651) 292-2000

Phone(651) 292-2000

Sole ProprietorNo

Medical School CMSUniversity Of Iowa, Rj & L Carver College Of MedicineGraduated 2015

Enumeration DateApril 1, 2015

Last NPPES UpdateAugust 29, 2025

NPPES CertifiedAugust 29, 2025

✔ NPI 1871988394 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 MN · 79044

Definition

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

2355 HWY 36 W, Roseville, MN 55113

Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Avera Health Plans, Blue Cross and Blue Shield of NC, Blue Cross Blue Shield of North Dakota.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

Ms. Siobhan Esther Alexander 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 ID6800219064

PECOS Enrollment IDI20250606000510, I20250606000739

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 22

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.

Injection, gadobutrol, 0.1 ml A9585

Gadobutrol is a contrast agent used during MRI scans to help provide clearer images. It's injected into your vein before the scan. This helps doctors to see certain areas more clearly for better diagnosis. It's generally safe with few side effects.

2,620 services29 patients

Screening 3d breast mammography 77063

Screening 3D breast mammography is a procedure that uses low-dose X-rays to create detailed images of the breast. This allows for early detection of any unusual changes or growths. It's a non-invasive, outpatient procedure that typically takes about 30 minutes.

589 services589 patients

Screening mammography 77067

Screening mammography is a preventative measure that uses low-dose X-rays to take images of the chest area. It's a key tool in early detection of abnormalities, helping to identify issues before they become symptomatic. It is recommended annually for certain age groups.

589 services589 patients

Screening 3d breast mammography 77063

224 services224 patients

Screening mammography 77067

222 services222 patients

Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) G0279

Diagnostic digital breast tomosynthesis is a 3D imaging test that allows doctors to examine your breast tissue layer by layer. It's performed on one or both sides. It helps in detecting abnormalities more accurately. It's often done in addition to other tests.

205 services203 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.

142 services138 patients

Diagnostic mammography of both breasts 77066

Diagnostic mammography involves using special imaging technology to capture detailed images of both breasts. This procedure helps in identifying any unusual changes or abnormalities. It's a crucial step in ensuring breast health and early detection of potential issues.

120 services120 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.

107 services107 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.

90 services90 patients

Diagnostic mammography of 1 breast 77065

Diagnostic mammography of 1 breast is a detailed imaging test that allows doctors to closely examine a specific area in the breast. It's often used when a routine screening reveals an abnormality. This test can help identify any unusual changes or issues.

87 services86 patients

Limited ultrasound scan of 1 breast 76642

A limited ultrasound scan of one breast is a non-invasive imaging test. It uses sound waves to create pictures of the inside of your breast. It helps identify any unusual growths or changes. It's safe, quick, and typically painless.

79 services79 patients

X-ray of chest, 2 views 71046

41 services41 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.

35 services35 patients

Biopsy of breast and placement of locating device using x-ray with needle, first growth 19081

A biopsy of the breast involves extracting a small sample of tissue for examination. A locating device placement, guided by x-ray, aids in identifying the exact spot of the first growth. A needle is used in both processes to ensure precision and minimal discomfort.

31 services28 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.

21 services21 patients

Mri scan of both breasts 77049

An MRI scan of both breasts is a non-invasive procedure using magnetic fields and radio waves to create detailed images of your chest area. This aids in detecting any abnormalities, ensuring your health and well-being.

20 services20 patients

Biopsy of breast and placement of locating device using ultrasound, first growth 19083

A breast biopsy with locating device placement involves taking a small sample from an unusual growth, using ultrasound for precise targeting. This sample is studied for any abnormal cells. A locating device is also placed to mark the area for future reference.

17 services17 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.

16 services16 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.

15 services15 patients

Placement of locating device in breast using imaging guidance, first growth 19281

This procedure involves placing a tiny device in the breast using image guidance. The device helps pinpoint the exact location of the first growth. It's a non-invasive method that aids in precise treatment planning.

14 services14 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.

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.

Allina United Hospital

Acute Care Hospitals · Saint Paul, MN

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number240038

Location333 North Smith AvenueSaint Paul, MN 55102 · Ramsey County

Emergency services Birthing friendly

Buffalo Hospital

Acute Care Hospitals · Buffalo, MN

5/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number240076

Location303 Catlin StreetBuffalo, MN 55313 · Wright County

Birthing friendly

Regions Hospital

Acute Care Hospitals · Saint Paul, MN

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number240106

Location640 Jackson StreetSaint Paul, MN 55101 · Ramsey County

Emergency services Birthing friendly

Mercy Hospital

Acute Care Hospitals · Coon Rapids, MN

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number240115

Location4050 Coon Rapids BlvdCoon Rapids, MN 55433 · Anoka County

Emergency services Birthing friendly

Westfields Hospital And Clinic

Critical Access Hospitals · New Richmond, WI

OwnershipVoluntary non-profit - Private

CMS Certification Number521345

Location535 Hospital RdNew Richmond, WI 54017 · St. Croix County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 55113 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

$85.82 typical visit price

range $56.00 – $168.28

Typical copayment $21.45 (range $14.00 – $42.07)

Most-billed visit code 99203

Established Patient

$69.74 typical visit price

range $18.32 – $138.04

Typical copayment $17.43 (range $4.58 – $34.51)

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.

85.61/100

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

Scored as part of a group practice

Quality

89.61

Improvement Activities

Cost

71.07

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.

DR. DARRIN LEE JOHNSON M.D.

Radiology (Diagnostic Radiology)

2355 HWY 36 W, STE. 100
ROSEVILLE, MN 55113

Ramsey County (651) 292-2000

SAMUEL JANG MD

Radiology (Diagnostic Radiology)

2355 HWY 36 W, STE. 100
ROSEVILLE, MN 55113

Ramsey County (651) 292-2000

ASHLEY HUNDLEY CNP

Nurse Practitioner (Family)

2355 HWY 36 W, STE. 100
ROSEVILLE, MN 55113

Ramsey County (651) 292-2000

ZACHARY FRIEDERICHS

Physician Assistant

2355 HWY 36 W, STE. 100
ROSEVILLE, MN 55113

Ramsey County (651) 292-2000

DR. GEORGE V. CHESTEEN II MD

Radiology (Diagnostic Radiology)

2355 HWY 36 W, STE. 100
ROSEVILLE, MN 55113

Ramsey County (651) 292-2000

DENNIS K KOBIRI MD

Radiology (Diagnostic Radiology)

2355 HWY 36 W, STE 100
ROSEVILLE, MN 55113

Ramsey County (651) 292-2000

JACK CHEN MD

Radiology (Diagnostic Radiology)

2355 HWY 36 W, STE. 100
ROSEVILLE, MN 55113

Ramsey County (651) 292-2000

DR. NOLAN S SHEN DO

Radiology (Diagnostic Radiology)

2355 HWY 36 W, STE. 100
ROSEVILLE, MN 55113

Ramsey County (651) 292-2000

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 Siobhan Alexander's NPI number?

The NPI number for Siobhan Alexander is 1871988394. It was assigned to this individual provider in the NPPES registry on April 1, 2015.

Where is Siobhan Alexander located?

Siobhan Alexander practices at 2355 Hwy 36 W Ste. 100, Roseville, MN 55113. The listed phone number is (651) 292-2000.

What is Siobhan Alexander's specialty?

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

Is Siobhan Alexander enrolled in Medicare?

Yes. Siobhan Alexander 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 Siobhan Alexander accept?

Health plans from Avera Health Plans, Blue Cross Blue Shield of North Dakota and Blue Cross and Blue Shield of NC list Siobhan Alexander 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 Siobhan Alexander affiliated with any hospitals?

According to CMS data, Siobhan Alexander is affiliated with Allina United Hospital, Buffalo Hospital, Regions Hospital, Mercy Hospital and Westfields Hospital And Clinic.

When was this NPI record last updated?

The NPPES record for Siobhan Alexander was last updated on August 29, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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.