CEM SIMSEK MD
NPI 1932795408
Internal Medicine - Gastroenterology in Boston, MA
About Cem Simsek Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CEM SIMSEK MD (NPI 1932795408) is an individual gastroenterology provider in Boston, Massachusetts, licensed in Massachusetts (5001571) and active in the NPI registry since December 2020. He is enrolled in Medicare PECOS, is affiliated with Brigham And Women's Hospital, and is a graduate of Other (2013).
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)
Cem Simsek Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Cem Simsek reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 4,574 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Brigham And Women's Hospital
Acute Care Hospitals · Boston, MAPhysician 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
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 Cem Simsek's NPI number?
The NPI number for Cem Simsek is 1932795408. It was assigned to this individual provider in the NPPES registry on December 17, 2020.
Where is Cem Simsek located?
Cem Simsek practices at 75 Francis St, Boston, MA 02115. The listed phone number is (857) 282-5142.
What is Cem Simsek's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Cem Simsek enrolled in Medicare?
Yes. Cem Simsek is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Cem Simsek's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Cem Simsek reassigns Medicare benefits to Brigham & Womens Physicians Organization Inc (Boston, MA). 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 Cem Simsek's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Cem Simsek accept?
Health plans from Anthem Blue Cross and Blue Shield and Taro Health list Cem Simsek 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 Cem Simsek affiliated with any hospitals?
According to CMS data, Cem Simsek is affiliated with Brigham And Women's Hospital.
When was this NPI record last updated?
The NPPES record for Cem Simsek was last updated on August 14, 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.
# Cem Simsek, MD · NPI 1932795408
Gastroenterology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since December 17, 2020.
## Identity
- **NPI:** 1932795408 (Entity type: Individual)
- **Enumerated:** December 17, 2020
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** 5001571 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 75 FRANCIS ST, Boston, MA 02115-6110
- **Phone:** (857) 282-5142
## 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:** Brigham & Womens Physicians Organization Inc (NPI 1033535497, Boston, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2013
## Record status
- **NPPES last updated:** August 14, 2026
---
Source: [NPI Profile](https://npiprofile.com/npi/1932795408) · Data from the CMS NPPES public registry.