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

C WILLIAM KAISER M.D.
NPI 1205875390
Surgery in Concord, MA

Active since June 05, 2006
8 MIDDLE ST, CONCORD, MA 01742(508) 662-3465 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About C William Kaiser M.d. NPPES

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

C WILLIAM KAISER M.D. (NPI 1205875390) is an individual surgery provider in Concord, Massachusetts, licensed in Massachusetts (31877) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1205875390
Entity TypeIndividualMale
Primary Taxonomy208600000X
Provider Legal NameC WILLIAM KAISERCredential: M.D.
Location Address8 MIDDLE STConcord, MA 01742-2407
Mailing Address8 Middle StConcord, MA 01742-2407 · (508) 662-3465
Phone(508) 662-3465
Sole ProprietorNo
Enumeration DateJune 5, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1205875390 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208600000X
License✔ Licensed in MA · 31877
Definition
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
8 MIDDLE ST, Concord, MA 01742
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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 C William Kaiser's NPI number?

The NPI number for C William Kaiser is 1205875390. It was assigned to this individual provider in the NPPES registry on June 5, 2006.

Where is C William Kaiser located?

C William Kaiser practices at 8 Middle St, Concord, MA 01742. The listed phone number is (508) 662-3465.

What is C William Kaiser's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

When was this NPI record last updated?

The NPPES record for C William Kaiser was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 38 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.