JESSICA F. WILLIAMS MD, PHD, MS
NPI 1396372926
Pathology - Anatomic Pathology in Boston, MA

Q: 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.

Q: What is Jessica Williams's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology, with taxonomy code 207ZP0101X.

Q: 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 5 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.

Active since March 24, 2020PECOS EnrolledAccepts Medicare Assignment

75 FRANCIS ST, BOSTON, MA 02115(617) 732-7510 Get Directions Write a Review

NPPES record last updated: February 10, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Mar 12, 2025, Mar 3, 2025, Mar 9, 2023 and 1 more (4 updates tracked since 2020).

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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

NPI1396372926

Entity TypeIndividualFemale

Primary Taxonomy207ZP0101X

Provider Legal NameJESSICA F. WILLIAMSCredential: MD, PHD, MS

Location Address75 FRANCIS STBoston, MA 02115-6106

Mailing Address75 Francis StBoston, MA 02115-6106 · (617) 732-7510

Phone(617) 732-7510

Sole ProprietorNo

Medical School CMSYale University School Of MedicineGraduated 2020

Enumeration DateMarch 24, 2020

Last NPPES UpdateFebruary 10, 20264 updates tracked since enumeration

NPPES CertifiedFebruary 10, 2026

✔ NPI 1396372926 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPathology · Anatomic PathologyAllopathic & Osteopathic Physicians

Taxonomy Code207ZP0101X

License✔ Licensed in MA · 1019205

Definition

A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.

Also ListedPathology · Molecular Genetic PathologyTaxonomy 207ZP0007X · License 1019205 (MA)

75 FRANCIS ST, Boston, MA 02115

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Other Names 1

Former Name (1)Jessica Johnston

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

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.

PECOS PAC ID2860914512

PECOS Enrollment IDI20250806003032

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

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, UT

5/5 CMS rating

OwnershipGovernment - State

CMS Certification Number460009

Location50 North Medical DriveSalt Lake City, UT 84132 · Salt Lake County

Emergency services Birthing friendly

Physician 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.

New Patient

$144.11 typical visit price

range $63.72 – $189.86

Typical copayment $36.02 (range $15.93 – $47.46)

Most-billed visit code 99204

Established Patient

$111.18 typical visit price

range $21.07 – $155.29

Typical copayment $27.79 (range $5.26 – $38.82)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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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.

RUMA RAJBHANDARI

Internal Medicine (Gastroenterology)

75 FRANCIS ST
BOSTON, MA 02115

Suffolk County (617) 525-6841

WENYA LINDA BI

Neurological Surgery

75 FRANCIS ST
BOSTON, MA 02115

Suffolk County (203) 645-9485

CHI YUEN CHAN M.D.

Student in an Organized Health Care Education/Training Program

75 FRANCIS ST
BOSTON, MA 02115

Suffolk County (617) 732-5500

JENNIFER MICHELLE THOMAS MD

Radiology (Diagnostic Radiology)

75 FRANCIS ST, DEPARTMENT OF RADIOLOGY
BOSTON, MA 02115

Suffolk County (617) 732-6248

GAURAV SHARMA M.D.

Surgery (Vascular Surgery)

75 FRANCIS ST, BRIGHAM AND WOMEN'S HOSPITAL
BOSTON, MA 02115

Suffolk County (951) 259-0890

DR. EUGENE RICHARDSON MD

Internal Medicine (Infectious Disease)

75 FRANCIS ST
BOSTON, MA 02115

Suffolk County (617) 732-8881

YEU-SHIN CINDY CHANG M.D., M.P.H.

Emergency Medicine

75 FRANCIS ST, BWH DEPT. OF EMERGENCY MEDICINE
BOSTON, MA 02115

Suffolk County (617) 732-8070

CARA L RICHARDS

Physician Assistant

75 FRANCIS ST
BOSTON, MA 02115

Suffolk County (617) 732-5500

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.

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 5 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.