SIVAN KASSIFF MD
NPI 1144719501
Pediatrics in Boston, MA
About Sivan Kassiff Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SIVAN KASSIFF MD (NPI 1144719501) is an individual pediatrics provider in Boston, Massachusetts, licensed in Massachusetts (1028247) and active in the NPI registry since May 2018. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Sivan Kassiff Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Sivan Kassiff reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Ann Arbor, MI 48109
- Reassigned Medicare billing, Michigan enrollment
- 2,377 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02115 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
BOSTON, MA 02115
BOSTON, MA 02115
BOSTON, MA 02115
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 Sivan Kassiff's NPI number?
The NPI number for Sivan Kassiff is 1144719501. It was assigned to this individual provider in the NPPES registry on May 1, 2018.
Where is Sivan Kassiff located?
Sivan Kassiff practices at 300 Longwood Ave, Boston, MA 02115. The listed phone number is (617) 355-6000.
What is Sivan Kassiff's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Sivan Kassiff enrolled in Medicare?
Yes. Sivan Kassiff is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Sivan Kassiff's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sivan Kassiff reassigns Medicare benefits to Regents Of The University Of Michigan (Ann Arbor, MI). The 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 Sivan Kassiff's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Sivan Kassiff accept?
Health plans from Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company and Priority Health list Sivan Kassiff 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.
When was this NPI record last updated?
The NPPES record for Sivan Kassiff was last updated on September 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 40 days 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.
# Sivan Kassiff, MD · NPI 1144719501
Pediatrics physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since May 1, 2018.
## Identity
- **NPI:** 1144719501 (Entity type: Individual)
- **Enumerated:** May 1, 2018
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** 1028247 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 LONGWOOD AVE, Boston, MA 02115-5724
- **Phone:** (617) 355-6000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Regents Of The University Of Michigan (NPI 1013352046, Ann Arbor, MI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 17, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1144719501) · Data from the CMS NPPES public registry.