ANDREW DEAN ALEX MARSHALL M.D.
NPI 1609257609
Emergency Medicine in Boston, MA
About Andrew Dean Alex Marshall M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ANDREW DEAN ALEX MARSHALL M.D. (NPI 1609257609) is an individual emergency medicine provider in Boston, Massachusetts, licensed in Massachusetts (274195) and active in the NPI registry since June 2015. He is enrolled in Medicare PECOS, is affiliated with Brigham And Women's Hospital, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
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
Andrew Dean Alex Marshall 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.
Medicare Billing Reassignments
8Medicare enrollment records show Andrew Marshall reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 4,574 clinicians in this Medicare group
Boston, MA 02215
- Reassigned Medicare billing, Massachusetts enrollment
- Also billed through NPI 1952358533 (Massachusetts)
- 1,006 clinicians in this Medicare group
Boston, MA 02215
- Reassigned Medicare billing, Massachusetts enrollment
- 1,477 clinicians in this Medicare group
Boston, MA 02215
- Reassigned Medicare billing, Massachusetts enrollment
- 247 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,234 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,360 clinicians in this Medicare group
East Boston, MA 02128
- Reassigned Medicare billing, Massachusetts enrollment
- 577 clinicians in this Medicare group
East Boston, MA 02128
- Reassigned Medicare billing, Massachusetts enrollment
- Medicare enrollment name: East Boston Neighborhood Health Center Corp
- 456 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 4
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 2
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, MAFaulkner Hospital-Brigham And Women's
Acute Care Hospitals · Boston, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02215 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
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Andrew Marshall's NPI number?
The NPI number for Andrew Marshall is 1609257609. It was assigned to this individual provider in the NPPES registry on June 16, 2015.
Where is Andrew Marshall located?
Andrew Marshall practices at 1 Deaconess Rd Fl 2, Boston, MA 02215. The listed phone number is (617) 754-2320.
What is Andrew Marshall's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Andrew Marshall enrolled in Medicare?
Yes. Andrew Marshall 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 Andrew Marshall's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Andrew Marshall reassigns Medicare benefits to 8 organizations: Brigham & Womens Physicians Organization Inc (Boston, MA), Associated Physicians Of Harvard Medical Faculty Physicians At Beth Is (Boston, MA), Beth Israel Deaconess Medical Center, Inc. (Boston, MA), Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc (Boston, MA), The General Hospital Corporation (Boston, 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 Andrew Marshall's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Andrew Marshall accept?
Health plans from Oscar Insurance Company and Taro Health list Andrew Marshall 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 Andrew Marshall affiliated with any hospitals?
According to CMS data, Andrew Marshall is affiliated with Brigham And Women's Hospital and Faulkner Hospital-Brigham And Women's.
When was this NPI record last updated?
The NPPES record for Andrew Marshall was last updated on February 22, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Andrew Dean Alex Marshall, M.D. · NPI 1609257609
Emergency Medicine physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since June 16, 2015.
## Identity
- **NPI:** 1609257609 (Entity type: Individual)
- **Enumerated:** June 16, 2015
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 274195 (Massachusetts)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1 DEACONESS RD FL 2, Boston, MA 02215-5321
- **Phone:** (617) 754-2320
## 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:** 8 organizations under Medicare reassignment (form CMS-855R): Brigham & Womens Physicians Organization Inc (NPI 1033535497, Boston, MA); Associated Physicians Of Harvard Medical Faculty Physicians At Beth Is (NPI 1861216038, Boston, MA); Beth Israel Deaconess Medical Center, Inc. (NPI 1548202641, Boston, MA); Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc (NPI 1316987993, Boston, MA); The General Hospital Corporation (NPI 1023049236, Boston, MA); and 3 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Meharry Medical College School Of Medicine, class of 2015
## Record status
- **NPPES last updated:** February 22, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1609257609) · Data from the CMS NPPES public registry.