JESSICA F. WILLIAMS MD, PHD, MS
NPI 1396372926
Pathology - Anatomic Pathology in Boston, MA
About Jessica F. Williams Md, Phd, Ms NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JESSICA F. WILLIAMS MD, PHD, MS (NPI 1396372926) is an individual anatomic pathology provider in Boston, Massachusetts, licensed in Massachusetts (1019205) and active in the NPI registry since March 2020. She is enrolled in Medicare PECOS, is affiliated with University Of Utah Hospitals And Clinics, and is a graduate of Yale University School Of Medicine (2020).
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
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
Jessica F. Williams Md, Phd, Ms 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 Jessica Williams reassigns Medicare billing to 2 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
Sandy, UT 84092
- Reassigned Medicare billing, Utah enrollment
- 2,620 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.
University Of Utah Hospitals And Clinics
Acute Care Hospitals · Salt Lake City, UTPhysician 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 Jessica Williams's NPI number?
The NPI number for Jessica Williams is 1396372926. It was assigned to this individual provider in the NPPES registry on March 24, 2020. The provider is also known as Jessica Johnston.
Where is Jessica Williams located?
Jessica Williams practices at 75 Francis St, Boston, MA 02115. The listed phone number is (617) 732-7510.
What is Jessica Williams's specialty?
The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology, with taxonomy code 207ZP0101X.
Is Jessica Williams enrolled in Medicare?
Yes. Jessica Williams 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 Jessica Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jessica Williams reassigns Medicare benefits to 2 organizations: Brigham & Womens Physicians Organization Inc (Boston, MA) and University Of Utah Adult Services (Sandy, UT). 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 Jessica Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Jessica Williams affiliated with any hospitals?
According to CMS data, Jessica Williams is affiliated with University Of Utah Hospitals And Clinics.
When was this NPI record last updated?
The NPPES record for Jessica Williams was last updated on February 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Jessica F. Williams, MD, PHD, MS · NPI 1396372926
Anatomic Pathology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since March 24, 2020.
## Identity
- **NPI:** 1396372926 (Entity type: Individual)
- **Enumerated:** March 24, 2020
- **Primary specialty:** Pathology - Anatomic Pathology · taxonomy 207ZP0101X
- **State license:** 1019205 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 75 FRANCIS ST, Boston, MA 02115-6106
- **Phone:** (617) 732-7510
## 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): Brigham & Womens Physicians Organization Inc (NPI 1033535497, Boston, MA); University Of Utah Adult Services (NPI 1851904247, Sandy, UT) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Yale University School Of Medicine, class of 2020
## Record status
- **NPPES last updated:** February 10, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1396372926) · Data from the CMS NPPES public registry.