STEPHEN HOWARD KARSHBAUM MD
NPI 1124032271
Radiology - Diagnostic Radiology in Peabody, MA

Active since July 27, 2006PECOS EnrolledAccepts Medicare Assignment
1 ORTHOPEDIC DR, PEABODY, MA 01960(978) 818-6272(978) 818-6282 Get Directions Write a Review

NPPES record last updated: August 6, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 6, 2026, May 8, 2026, Mar 25, 2026 and 1 more (4 updates tracked since 2025).

About Stephen Howard Karshbaum Md NPPES

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

STEPHEN HOWARD KARSHBAUM MD (NPI 1124032271) is an individual diagnostic radiology provider in Peabody, Massachusetts, licensed in Massachusetts (78711) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with St Elizabeth's Medical Center, and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1124032271
Entity TypeIndividualMale
Primary Taxonomy2085R0202X
Provider Legal NameSTEPHEN HOWARD KARSHBAUMCredential: MD
Location Address1 ORTHOPEDIC DRPeabody, MA 01960-1668
Mailing Address960 Massachusetts Ave, Fl 2Boston, MA 02118
Fax(978) 818-6282
Sole ProprietorNo
Medical School CMSTufts University School Of MedicineGraduated 1991
Enumeration DateJuly 27, 2006
Last NPPES UpdateAugust 6, 20264 updates tracked since enumeration
NPPES CertifiedAugust 6, 2026
✔ NPI 1124032271 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 · 78711✔ Licensed in RI · MD11064
Definition
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
1 ORTHOPEDIC DR, Peabody, MA 01960

Secondary Practice Locations 3

Location 1235 North Pearl StBrockton, MA 02301 · Phone (508) 427-2665 · Fax (508) 427-2368
Location 2840 Harrison AveBoston, MA 02118-2905 · Phone (617) 638-6610 · Fax (617) 638-6616
Location 3736 Cambridge StBrighton, MA 02135 · Phone (617) 789-2762

Other Identifiers 2

Medicaid110061581AMA
Medicaid3129651NH

Accepted 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

Stephen Howard Karshbaum 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 ID2769466853
PECOS Enrollment IDI20040616000492
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

8

Medicare enrollment records show Stephen Karshbaum reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Specialist
1 ORTHOPEDIC DR, 2ND FLOOR
Peabody, MA 01960
  • Reassigned Medicare billing, Massachusetts enrollment
  • 73 clinicians in this Medicare group
Internal Medicine
1 BOSTON MEDICAL CENTER PLACE
Boston, MA 02118
  • Reassigned Medicare billing, Massachusetts enrollment
  • 716 clinicians in this Medicare group
Specialist
77 WARREN ST
Brighton, MA 02135
  • Reassigned Medicare billing, Massachusetts enrollment
  • Also billed through NPI 1821349317 (Massachusetts)
  • 130 clinicians in this Medicare group
Diagnostic Radiology
125 PARKER HILL AVE
Roxbury Crossing, MA 02120
  • Reassigned Medicare billing, Massachusetts enrollment
  • 13 clinicians in this Medicare group
Physical Therapist
176 WALKER ST
Lowell, MA 01854
  • Reassigned Medicare billing, Massachusetts enrollment
  • 42 clinicians in this Medicare group
Diagnostic Radiology
200 PROVIDENCE HWY STE 210
Dedham, MA 02026
  • Reassigned Medicare billing, Massachusetts enrollment
  • Medicare enrollment name: Chelmsford Mri PC
  • Also billed through NPI 1821435553 (Massachusetts)
  • 82 clinicians in this Medicare group
Diagnostic Radiology
265 WESTGATE DR
Brockton, MA 02301
  • Reassigned Medicare billing, Massachusetts enrollment
  • 28 clinicians in this Medicare group
Specialist
1900 LAFAYETTE RD, STE A
Portsmouth, NH 03801
  • Reassigned Medicare billing, New Hampshire enrollment
  • 22 clinicians in this Medicare group

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 30

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, gadoterate meglumine, 0.1 ml A9575
Gadoterate meglumine is a contrast agent used in MRI scans to help visualize certain areas of your body more clearly. It's injected into your bloodstream, typically through a vein in your arm, and helps doctors get more detailed images.
24,208 services135 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.
560 services540 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.
253 services249 patients
Mri scan of abdomen before and after contrast 74183
An MRI scan of the abdomen before and after contrast provides detailed images of your abdominal organs. Initially, images are taken without a contrast agent. Then, a safe dye is administered, usually via an IV, to highlight certain areas, giving a clearer picture to help diagnose various conditions.
139 services133 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.
112 services109 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.
72 services71 patients

Hospital Affiliations CMS Care Compare 2

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

St Elizabeth's Medical Center

Acute Care Hospitals · Brighton, MA
2/5 CMS rating
OwnershipProprietary
CMS Certification Number220036
Location736 Cambridge StreetBrighton, MA 02135 · Suffolk County
Emergency services Birthing friendly

Good Samaritan Medical Center

Acute Care Hospitals · Brockton, MA
2/5 CMS rating
OwnershipProprietary
CMS Certification Number220111
Location235 North Pearl StreetBrockton, MA 02301 · Plymouth County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01960 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
$90.70 typical visit price
range $58.86 – $177.36
Typical copayment $22.67 (range $14.71 – $44.34)
Most-billed visit code 99203
Established Patient
$73.22 typical visit price
range $19.11 – $144.84
Typical copayment $18.30 (range $4.77 – $36.21)
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.

Physical Therapist
1 ORTHOPEDIC DR
PEABODY, MA 01960
Physical Therapist (Orthopedic)
1 ORTHOPEDIC DR
PEABODY, MA 01960
Orthopaedic Surgery (Orthopaedic Surgery of the Spine)
1 ORTHOPEDIC DR
PEABODY, MA 01960
Physical Therapist
1 ORTHOPEDIC DR
PEABODY, MA 01960
Radiology (Diagnostic Radiology)
1 ORTHOPEDIC DR
PEABODY, MA 01960
Pain Medicine (Interventional Pain Medicine)
1 ORTHOPEDIC DR
PEABODY, MA 01960
Physical Therapist
1 ORTHOPEDIC DR
PEABODY, MA 01960
Physical Therapist
1 ORTHOPEDIC DR
PEABODY, MA 01960

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 Stephen Karshbaum's NPI number?

The NPI number for Stephen Karshbaum is 1124032271. It was assigned to this individual provider in the NPPES registry on July 27, 2006.

Where is Stephen Karshbaum located?

Stephen Karshbaum practices at 1 Orthopedic Dr, Peabody, MA 01960. The listed phone number is (978) 818-6272.

What is Stephen Karshbaum's specialty?

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

Is Stephen Karshbaum enrolled in Medicare?

Yes. Stephen Karshbaum 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 Stephen Karshbaum's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Stephen Karshbaum reassigns Medicare benefits to 8 organizations: Sports Medicine North Orthopaedic Surgery, Inc. (Peabody, MA), Bmc Affiliated Physicians, Inc. (Boston, MA), Steward Medical Group, Inc (Brighton, MA), Neb Radiology PC (Roxbury Crossing, MA), Orthopaedic Surgical Associates Of Lowell, P.C. (Lowell, MA) and 3 more organizations, 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 Stephen Karshbaum's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Stephen Karshbaum accept?

Health plans from Ambetter from NH Healthy Families, Taro Health and WellSense Health Plan list Stephen Karshbaum 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 Stephen Karshbaum affiliated with any hospitals?

According to CMS data, Stephen Karshbaum is affiliated with St Elizabeth's Medical Center and Good Samaritan Medical Center.

When was this NPI record last updated?

The NPPES record for Stephen Karshbaum was last updated on August 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.