THOMAS FREDERICK MCELRATH MD PHD
NPI 1871504944
Obstetrics & Gynecology - Maternal & Fetal Medicine in Boston, MA
About Thomas Frederick Mcelrath Md Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
THOMAS FREDERICK MCELRATH MD PHD (NPI 1871504944) is an individual maternal & fetal medicine provider in Boston, Massachusetts, licensed in Massachusetts (205011) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Brigham And Women's Hospital, and is a graduate of Harvard Medical School (1996).
NPPES Registry Identity
Specialties & Licenses
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
Thomas Frederick Mcelrath Md Phd 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 Reassignment
Medicare enrollment records show Thomas Mcelrath 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 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Thomas Mcelrath's NPI number?
The NPI number for Thomas Mcelrath is 1871504944. It was assigned to this individual provider in the NPPES registry on August 11, 2006.
Where is Thomas Mcelrath located?
Thomas Mcelrath practices at 75 Francis Street Brigham And Womens Hospital Cwn-3 Division Of Maternal-Fetal Medicine, Boston, MA 02115. The listed phone number is (617) 732-4980.
What is Thomas Mcelrath's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Maternal & Fetal Medicine, with taxonomy code 207VM0101X.
Is Thomas Mcelrath enrolled in Medicare?
Yes. Thomas Mcelrath 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 organization bills Medicare for Thomas Mcelrath's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Mcelrath 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 Thomas Mcelrath's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Thomas Mcelrath affiliated with any hospitals?
According to CMS data, Thomas Mcelrath is affiliated with Brigham And Women's Hospital.
When was this NPI record last updated?
The NPPES record for Thomas Mcelrath was last updated on June 24, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.
# Thomas Frederick Mcelrath, MD PHD · NPI 1871504944
Maternal & Fetal Medicine physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since August 11, 2006.
## Identity
- **NPI:** 1871504944 (Entity type: Individual)
- **Enumerated:** August 11, 2006
- **Primary specialty:** Obstetrics & Gynecology - Maternal & Fetal Medicine · taxonomy 207VM0101X
- **State license:** 205011 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 75 FRANCIS STREET BRIGHAM AND WOMENS HOSPITAL, CWN-3 DIVISION OF MATERNAL-FETAL MEDICINE, Boston, MA 02115
- **Phone:** (617) 732-4980
## 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:** Brigham & Womens Physicians Organization Inc (NPI 1033535497, Boston, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Harvard Medical School, class of 1996
## Record status
- **NPPES last updated:** June 24, 2012
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Source: [NPI Profile](https://npiprofile.com/npi/1871504944) · Data from the CMS NPPES public registry.