DR. SEAN PATRICK MARKER MD
NPI 1104852011
Psychiatry & Neurology - Psychiatry in Dorchester Center, MA
About Dr. Sean Patrick Marker Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SEAN PATRICK MARKER MD (NPI 1104852011) is an individual psychiatry provider in Dorchester Center, Massachusetts, licensed in Massachusetts (214158) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Boston Medical Center, and is a graduate of University Of Pittsburgh School Of Medicine (1998).
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 and accepts Medicare assignment
Dr. Sean Patrick Marker 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.
Medicare Billing Reassignments
2Medicare enrollment records show Sean Marker reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Dorchester, MA 02122
- Reassigned Medicare billing, Massachusetts enrollment
- 98 clinicians in this Medicare group
Winchester, MA 01890
- Reassigned Medicare billing, Massachusetts enrollment
- 6 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 3
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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Boston Medical Center
Acute Care Hospitals · Boston, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02124 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.
DORCHESTER, MA 02124
DORCHESTER CENTER, MA 02124
DORCHESTER CENTER, MA 02124
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 Sean Marker's NPI number?
The NPI number for Sean Marker is 1104852011. It was assigned to this individual provider in the NPPES registry on June 23, 2006.
Where is Sean Marker located?
Sean Marker practices at 2100 Dorchester Ave 4 South, Dorchester Center, MA 02124. The listed phone number is (617) 296-4000.
What is Sean Marker's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is Sean Marker enrolled in Medicare?
Yes. Sean Marker 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 Sean Marker's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sean Marker reassigns Medicare benefits to 2 organizations: Dothouse Health Inc. (Dorchester, MA) and Michael W. Marcus, M.D., P.C. (Winchester, MA). 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 Sean Marker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Sean Marker accept?
Health plans from Anthem Blue Cross and Blue Shield and Harvard Pilgrim Health Care list Sean Marker 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 Sean Marker affiliated with any hospitals?
According to CMS data, Sean Marker is affiliated with Boston Medical Center.
When was this NPI record last updated?
The NPPES record for Sean Marker was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Dr. Sean Patrick Marker, MD · NPI 1104852011
Psychiatry physician in Dorchester Center, Massachusetts. Individual provider, active in the CMS NPPES registry since June 23, 2006.
## Identity
- **NPI:** 1104852011 (Entity type: Individual)
- **Enumerated:** June 23, 2006
- **Primary specialty:** Psychiatry & Neurology - Psychiatry · taxonomy 2084P0800X
- **State license:** 214158 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 2100 DORCHESTER AVE, 4 SOUTH, Dorchester Center, MA 02124-5615
- **Phone:** (617) 296-4000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Dothouse Health Inc. (NPI 1578514733, Dorchester, MA); Michael W. Marcus, M.D., P.C. (NPI 1780891697, Winchester, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Pittsburgh School Of Medicine, class of 1998
## Record status
- **NPPES last updated:** July 8, 2007
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Source: [NPI Profile](https://npiprofile.com/npi/1104852011) · Data from the CMS NPPES public registry.