MICHAEL A FISCHER MD
NPI 1871511634
Internal Medicine in Boston, MA
About Michael A Fischer Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHAEL A FISCHER MD (NPI 1871511634) is an individual internal medicine provider in Boston, Massachusetts, licensed in Massachusetts (159708) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Boston Medical Center, and is a graduate of Yale University School Of Medicine (1997).
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
Michael A Fischer 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 Michael Fischer reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02118
- Reassigned Medicare billing, Massachusetts enrollment
- 573 clinicians in this Medicare group
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.
Areas of Expertise CMS Part B claims
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 02118 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 3
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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 02118
BOSTON, MA 02118
BOSTON, MA 02118
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 Michael Fischer's NPI number?
The NPI number for Michael Fischer is 1871511634. It was assigned to this individual provider in the NPPES registry on July 18, 2006.
Where is Michael Fischer located?
Michael Fischer practices at 801 Massachusetts Ave Adult Primary Care- Crosstown 6A, Boston, MA 02118. The listed phone number is (617) 414-5951.
What is Michael Fischer's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Michael Fischer enrolled in Medicare?
Yes. Michael Fischer 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 Michael Fischer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Fischer reassigns Medicare benefits to 2 organizations: Evans Medical Foundation, Inc. (Boston, MA) and Brigham & Womens Physicians Organization Inc (Boston, 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 Michael Fischer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Michael Fischer accept?
Health plans from Anthem Blue Cross and Blue Shield and Taro Health list Michael Fischer 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 Michael Fischer affiliated with any hospitals?
According to CMS data, Michael Fischer is affiliated with Boston Medical Center.
When was this NPI record last updated?
The NPPES record for Michael Fischer was last updated on October 27, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Michael A Fischer, MD · NPI 1871511634
Internal Medicine physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since July 18, 2006.
## Identity
- **NPI:** 1871511634 (Entity type: Individual)
- **Enumerated:** July 18, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 159708 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 801 MASSACHUSETTS AVE, ADULT PRIMARY CARE- CROSSTOWN 6A, Boston, MA 02118-6110
- **Phone:** (617) 414-5951 · **Fax:** (617) 414-9201
## 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): Evans Medical Foundation, Inc. (NPI 1912954124, Boston, MA); Brigham & Womens Physicians Organization Inc (NPI 1033535497, Boston, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Yale University School Of Medicine, class of 1997
## Record status
- **NPPES last updated:** October 27, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1871511634) · Data from the CMS NPPES public registry.