Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. WILLIAM THOMAS ROTHWELL MD PHD
NPI 1669933487
Pathology - Clinical Pathology in Boston, MA

Q: What is William Rothwell's NPI number?

The NPI number for William Rothwell is 1669933487. It was assigned to this individual provider in the NPPES registry on March 26, 2019.

Q: What is William Rothwell's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Clinical Pathology, with taxonomy code 207ZC0006X.

Q: When was this NPI record last updated?

The NPPES record for William Rothwell was last updated on July 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 days 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 26, 2019PECOS Enrolled

50 NORTHERN AVE, BOSTON, MA 02210(857) 276-5490 Get Directions Write a Review

NPPES record last updated: July 28, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

On this page

About Dr. William Thomas Rothwell Md Phd NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. WILLIAM THOMAS ROTHWELL MD PHD (NPI 1669933487) is an individual clinical pathology provider in Boston, Massachusetts, licensed in Massachusetts (1014255) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS and is a graduate of Perelman School Of Med At The University Of Pennsylvania (2019).

NPPES Registry Identity

NPI1669933487

Entity TypeIndividualMale

Primary Taxonomy207ZC0006X

Provider Legal NameDR. WILLIAM THOMAS ROTHWELLCredential: MD PHD

Location Address50 NORTHERN AVEBoston, MA 02210-1862

Mailing Address336 Chelsea St Unit 6East Boston, MA 02128-5001

Phone(857) 276-5490

Sole ProprietorNo

Medical School CMSPerelman School Of Med At The University Of PennsylvaniaGraduated 2019

Enumeration DateMarch 26, 2019

Last NPPES UpdateJuly 28, 2026

NPPES CertifiedJuly 28, 2026

✔ NPI 1669933487 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPathology · Clinical PathologyAllopathic & Osteopathic Physicians

Taxonomy Code207ZC0006X

License✔ Licensed in MA · 1014255

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.

50 NORTHERN AVE, Boston, MA 02210

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. William Thomas Rothwell Md Phd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID749519908

PECOS Enrollment IDI20251111001120

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02210 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.

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 William Rothwell's NPI number?

The NPI number for William Rothwell is 1669933487. It was assigned to this individual provider in the NPPES registry on March 26, 2019.

Where is William Rothwell located?

William Rothwell practices at 50 Northern Ave, Boston, MA 02210. The listed phone number is (857) 276-5490.

What is William Rothwell's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Clinical Pathology, with taxonomy code 207ZC0006X.

Is William Rothwell enrolled in Medicare?

Yes. William Rothwell is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for William Rothwell was last updated on July 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 days 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.