DR. ZACHARY ELIJAH STEWART M.D.
NPI 1457713166
Radiology - Diagnostic Radiology in Boston, MA

Q: What is Zachary Stewart's NPI number?

The NPI number for Zachary Stewart is 1457713166. It was assigned to this individual provider in the NPPES registry on March 22, 2016.

Q: What is Zachary Stewart'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 Zachary Stewart was last updated on July 11, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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 March 22, 2016PECOS EnrolledAccepts Medicare Assignment

55 FRUIT STREET, CNY-B62, BOSTON, MA 02114(617) 724-0288 Get Directions Write a Review

NPPES record last updated: July 11, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 11, 2022, Jun 23, 2021, Mar 22, 2016 (3 updates tracked since 2016).

On this page

About Dr. Zachary Elijah Stewart M.d. NPPES

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

DR. ZACHARY ELIJAH STEWART M.D. (NPI 1457713166) is an individual diagnostic radiology provider in Boston, Massachusetts, licensed in Massachusetts (291494) and active in the NPI registry since March 2016. He is enrolled in Medicare PECOS, is affiliated with Massachusetts General Hospital, and maintains a secondary practice location in Madison.

NPPES Registry Identity

NPI1457713166

Entity TypeIndividualMale

Primary Taxonomy2085R0202X

Provider Legal NameDR. ZACHARY ELIJAH STEWARTCredential: M.D.

Location Address55 FRUIT STREET, CNY-B62Boston, MA 02114-2696

Mailing Address55 Fruit StBoston, MA 02114-2696

Phone(617) 724-0288

Sole ProprietorNo

Medical School CMSLouisiana State University School Of Medicine In New OrleansGraduated 2016

Enumeration DateMarch 22, 2016

Last NPPES UpdateJuly 11, 20223 updates tracked since enumeration

NPPES CertifiedJuly 11, 2022

✔ NPI 1457713166 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0202X

Licenses✔ Licensed in MA · 291494✔ Licensed in WI · 75218

Definition

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

55 FRUIT STREET, Boston, MA 02114

Open in Google Maps ↗

Secondary Practice Location 1

Location 1600 Highland AveMadison, WI 53792-5502 · Phone (608) 263-0889

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Taro Health.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. Zachary Elijah Stewart 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 ID1658665625

PECOS Enrollment IDI20220811000360

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 Zachary Stewart reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Massachusetts General Physicians Organization Inc

Same address

Dermatology

55 FRUIT ST, BUL 2
Boston, MA 02114

Reassigned Medicare billing, Massachusetts enrollment
6,360 clinicians in this Medicare group

NPI 1801874573 (617) 724-0287

The General Hospital Corporation

Same address

General Acute Care Hospital

55 FRUIT ST, BULFINCH 360
Boston, MA 02114

Reassigned Medicare billing, Massachusetts enrollment
6,234 clinicians in this Medicare group

NPI 1023049236 (617) 726-2000

Fort Healthcare Inc

904 mi

Rural Health

611 SHERMAN AVE E
Fort Atkinson, WI 53538

Reassigned Medicare billing, Wisconsin enrollment
298 clinicians in this Medicare group

NPI 1417450115 (920) 563-5571

Richland Hospital

966 mi

Rural Health

150 E JEFFERSON ST
Spring Green, WI 53588

Reassigned Medicare billing, Wisconsin enrollment
168 clinicians in this Medicare group

NPI 1952094138 (608) 588-7413

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 69

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 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.

250 services243 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.

196 services161 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.

162 services140 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.

145 services129 patients

X-ray of shoulder, minimum of 2 views 73030

145 services127 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.

135 services134 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.

134 services112 patients

X-ray of foot, minimum of 3 views 73630

119 services105 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.

102 services95 patients

X-ray of knee, 4 or more views 73564

101 services97 patients

Mri scan of leg joint without contrast 73721

An MRI scan of your leg joint is a non-invasive procedure that uses magnetic fields and radio waves to create detailed images of the structures within your leg. This helps doctors diagnose or monitor conditions without using contrast dye.

94 services89 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.

93 services70 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.

93 services78 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.

92 services91 patients

X-ray of ankle, minimum of 3 views 73610

92 services83 patients

X-ray of lower and sacral spine, 2-3 views 72100

81 services80 patients

Mri scan of arm joint without contrast 73221

An MRI scan of the arm joint is a non-invasive imaging procedure that uses magnetic fields and radio waves to create detailed images of the structures within your arm joint. No contrast dye is used in this process. It helps to diagnose or monitor conditions like arthritis, injuries, or infections.

69 services62 patients

X-ray of hip, 2-3 views 73502

66 services64 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.

65 services58 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.

62 services62 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.

48 services44 patients

Ct scan of leg without contrast 73700

A CT scan of the leg is a non-invasive imaging test that uses X-rays to capture detailed images of your leg's bones, muscles, and blood vessels. It doesn't use contrast dye and doesn't cause any pain. It helps in diagnosing injuries or diseases.

46 services39 patients

Limited ultrasound scan of joint or other extremity structure except blood vessels 76882

A limited ultrasound scan of a joint or other extremity structure lacking blood vessels is a non-invasive procedure that uses sound waves to create images of the inside of your body. This helps in diagnosing and monitoring conditions related to your joints or other similar structures.

41 services39 patients

Mri scan of leg joint without contrast 73721

38 services38 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.

38 services34 patients

X-ray of entire middle and lower spine, 2-3 views 72082

An X-ray of your middle and lower spine involves capturing images of these areas to identify any abnormalities. The procedure involves taking 2-3 different views for a comprehensive understanding. It's non-invasive and usually painless, helping doctors diagnose conditions like fractures or infections.

37 services36 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.

35 services35 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.

32 services29 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.

32 services32 patients

Complete ultrasound scan of joint 76881

A complete ultrasound scan of a joint is a non-invasive procedure using sound waves to create images of your joint. It helps identify problems like inflammation, injury, or disease. It's painless, safe, and doesn't involve radiation.

32 services28 patients

X-ray of upper spine, 2-3 views 72040

31 services30 patients

Ct scan of leg without contrast 73700

31 services30 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.

31 services31 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.

30 services30 patients

X-ray of hand, minimum of 3 views 73130

29 services27 patients

Ct scan of arm without contrast 73200

A CT scan of the arm without contrast is a non-invasive imaging test. It uses X-ray technology to capture detailed images of your arm's structures. It doesn't involve any contrasting dye, hence, minimal preparation is required. It helps in diagnosing injuries or conditions affecting the arm.

29 services29 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.

29 services29 patients

Mri scan of lower spinal canal without contrast 72148

28 services28 patients

Mri scan of arm joint without contrast 73221

28 services27 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.

28 services24 patients

3d radiographic procedure with computerized image postprocessing 76377

A 3D radiographic procedure with computerized image postprocessing is a high-tech imaging test. It uses X-rays to create detailed 3D images of the body. The computerized postprocessing further enhances these images for more precise diagnosis and treatment planning.

26 services26 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.

25 services25 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.

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.

23 services23 patients

Ct scan of lower spine without contrast 72131

22 services22 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.

22 services20 patients

X-ray of knee, 1-2 views 73560

22 services19 patients

X-ray of hand, 2 views 73120

An X-ray of the hand, 2 views, is a non-invasive imaging test that uses a small amount of radiation to produce pictures of the bones in your hand. Two different angles are captured to provide a comprehensive view. This helps in diagnosing injuries or conditions affecting your hand.

21 services11 patients

X-ray of wrist, minimum of 3 views 73110

20 services19 patients

Ct scan of arm without contrast 73200

20 services20 patients

Ct scan of leg with contrast material 73701

A CT scan of the leg with contrast material is an imaging procedure. A special dye, the contrast material, is used to highlight certain areas, making them easier to see. This scan helps to detect issues like fractures, infections, or tumors in the leg.

20 services19 patients

X-ray for bone length assessment 77073

An X-ray for bone length assessment is a simple, non-invasive imaging test. It helps to evaluate the length of your bones and identify any discrepancies or abnormalities. This procedure is quick, painless, and provides valuable information for your healthcare provider.

20 services20 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.

19 services19 patients

X-ray of sacrum and tailbone, minimum of 2 views 72220

An X-ray of the sacrum and tailbone involves capturing images of these lower spine areas from at least two different angles. This non-invasive procedure helps detect abnormalities or injuries, providing valuable information for accurate diagnosis and treatment.

16 services15 patients

X-ray of finger, minimum of 2 views 73140

An X-ray of the finger involves capturing images of your finger from at least two different angles. This non-invasive procedure helps in visualizing the bones and joints, aiding in the diagnosis of fractures, infections, or other abnormalities. Minimal discomfort may be experienced.

16 services16 patients

X-ray of knee, 3 views 73562

16 services12 patients

Mri scan of leg without contrast 73718

An MRI scan of the leg without contrast is a non-invasive imaging procedure. It uses a magnetic field and radio waves to create detailed images of the structures in your leg, such as bones, muscles, and blood vessels. No contrast dye is used.

16 services15 patients

Mri scan of leg without contrast 73718

16 services16 patients

X-ray of middle spine, 2 views 72070

15 services15 patients

Injection into tendon or ligament 20550

An injection into a tendon or ligament involves placing medication directly into these areas to help reduce inflammation and pain. It's often used for conditions like arthritis or tendonitis. The procedure is quick and usually involves a local anesthetic.

14 services14 patients

X-ray of ribs on side of body, minimum of 3 views 71101

This is a diagnostic procedure where a machine emits a small amount of radiation to capture images of your ribs from at least three different angles. It helps to identify issues like fractures or infections. It's a quick, painless process.

13 services13 patients

X-ray of lower and sacral spine, minimum of 4 views 72110

13 services13 patients

X-ray of pelvis, minimum of 3 views 72190

An X-ray of the pelvis with a minimum of 3 views is a diagnostic procedure that uses radiation to create images of your lower body area. This helps in detecting issues like fractures, arthritis, or other abnormalities. It's quick, non-invasive, and typically painless.

13 services13 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.

12 services12 patients

Mri scan of middle spinal canal without contrast 72146

An MRI scan of the middle spinal canal without contrast is a non-invasive imaging test. It uses magnetic fields and radio waves to create detailed images of your spine. This helps doctors identify any abnormalities or issues in your spinal canal. No dye is used in this procedure.

12 services12 patients

Mri scan of pelvis without contrast 72195

An MRI scan of the pelvis without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to create detailed pictures of the lower part of your body. This helps doctors to identify any abnormalities or issues in that area.

12 services12 patients

X-ray of hip, minimum of 4 views 73503

An X-ray of the hip with a minimum of 4 views is a non-invasive procedure that uses a small amount of radiation to produce images of the hip joint from different angles. This helps to diagnose conditions such as fractures, arthritis, or other abnormalities. It's a quick, painless process.

12 services12 patients

Other diagnostic imaging procedure 76499

A diagnostic imaging procedure involves using advanced technology to create detailed images of the inside of your body. This can help identify a wide range of health conditions. The procedure is non-invasive, safe, and can include methods like MRI, CT scan, or ultrasound.

11 services11 patients

X-ray of joints, multiple 77077

An X-ray of multiple joints is a non-invasive imaging test that helps visualize the condition of your joints. This procedure uses a small amount of radiation to produce images of bones and joints, assisting in diagnosing conditions like arthritis or injury.

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.

Massachusetts General Hospital

Acute Care Hospitals · Boston, MA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220071

Location55 Fruit StreetBoston, MA 02114 · Suffolk County

Emergency services Birthing friendly

Newton-Wellesley Hospital

Acute Care Hospitals · Newton, MA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220101

Location2014 Washington StreetNewton, MA 02462 · Middlesex County

Emergency services Birthing friendly

Brigham And Women's Hospital

Acute Care Hospitals · Boston, MA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220110

Location75 Francis StreetBoston, MA 02115 · Suffolk County

Emergency services Birthing friendly

Faulkner Hospital-Brigham And Women's

Acute Care Hospitals · Boston, MA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220119

Location1153 Centre StreetBoston, MA 02130 · Suffolk County

Emergency services

Martha's Vineyard Hospital Inc

Critical Access Hospitals · Oak Bluffs, MA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number221300

LocationOne Hospital Road, First Fl, Wing 5, PO Box 1477Oak Bluffs, MA 02557 · Dukes County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02114 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

$97.64 typical visit price

range $63.72 – $189.86

Typical copayment $24.41 (range $15.93 – $47.46)

Most-billed visit code 99203

Established Patient

$78.84 typical visit price

range $21.07 – $155.29

Typical copayment $19.71 (range $5.26 – $38.82)

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.

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.

KUI TOH GERARD LEONG M.D.

Internal Medicine (Cardiovascular Disease)

55 FRUIT STREET, MASSACHUSETTS GENERAL HOSPITAL
BOSTON, MA 02114

Suffolk County (617) 726-8862

MS. JACQUELINE BANGO LICSW

Social Worker (Clinical)

55 FRUIT STREET, FOUNDERS BUILDING SUITE 880
BOSTON, MA 02114

Suffolk County (617) 643-8281

SARA ELIZABETH GROSSLEIN PA

Physician Assistant

55 FRUIT STREET, WHITE 1
BOSTON, MA 02114

Suffolk County (617) 724-4100

JEFFREY M ELLENBOGEN M.D.

Psychiatry & Neurology (Neurology)

55 FRUIT STREET, WANG 720 (NEUROLOGY)
BOSTON, MA 02114

Suffolk County (617) 724-7419

DR. NANCY LEE HARRIS MD

Pathology (Anatomic Pathology & Clinical Pathology)

55 FRUIT STREET, WRN 2 PATHOLOGY ASSOCIATES
BOSTON, MA 02114

Suffolk County (617) 726-5155

DR. STANLEY YANG SHAW MD PHD

Internal Medicine (Cardiovascular Disease)

55 FRUIT STREET, YAW 5 CARDIAC UNIT ASSOCIATES
BOSTON, MA 02114

Suffolk County (617) 724-6750

LEONARDO V RIELLA M.D., PHD

Internal Medicine

55 FRUIT STREET, WHITE 5
BOSTON, MA 02114

Suffolk County (617) 726-5050

SUSAN MAHER CRNA

Nurse Anesthetist, Certified Registered

55 FRUIT STREET, CLN 309 MGH ANESTHESIA ASSOCIATES
BOSTON, MA 02114

Suffolk County (617) 726-3030

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 Zachary Stewart's NPI number?

The NPI number for Zachary Stewart is 1457713166. It was assigned to this individual provider in the NPPES registry on March 22, 2016.

Where is Zachary Stewart located?

Zachary Stewart practices at 55 Fruit Street Cny-B62, Boston, MA 02114. The listed phone number is (617) 724-0288.

What is Zachary Stewart's specialty?

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

Is Zachary Stewart enrolled in Medicare?

Yes. Zachary Stewart 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 Zachary Stewart's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Zachary Stewart reassigns Medicare benefits to 4 organizations: Massachusetts General Physicians Organization Inc (Boston, MA), The General Hospital Corporation (Boston, MA), Fort Healthcare Inc (Fort Atkinson, WI) and Richland Hospital (Spring Green, WI). 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 Zachary Stewart's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Zachary Stewart accept?

Health plans from Taro Health list Zachary Stewart 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 Zachary Stewart affiliated with any hospitals?

According to CMS data, Zachary Stewart is affiliated with Massachusetts General Hospital, Newton-Wellesley Hospital, Brigham And Women's Hospital, Faulkner Hospital-Brigham And Women's and Martha's Vineyard Hospital Inc.

When was this NPI record last updated?

The NPPES record for Zachary Stewart was last updated on July 11, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.