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

DR. WILLIAM KENDALL MARSHALL DDS
NPI 1558379693
Dentist - General Practice in Indianapolis, IN

Q: What is William Marshall's NPI number?

The NPI number for William Marshall is 1558379693. It was assigned to this individual provider in the NPPES registry on August 4, 2006.

Q: What is William Marshall's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

Q: When was this NPI record last updated?

The NPPES record for William Marshall was last updated on August 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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 August 04, 2006PECOS Enrolled

10 W MARKET ST, 240, INDIANAPOLIS, IN 46204(317) 639-3523(317) 639-4522 Get Directions Write a Review

NPPES record last updated: August 27, 2026. Verified against the NPPES registry weekly; last sync: September 06, 2026.

On this page

About Dr. William Kendall Marshall Dds NPPES

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

DR. WILLIAM KENDALL MARSHALL DDS (NPI 1558379693) is an individual general practice provider in Indianapolis, Indiana, licensed in Indiana (12006402A) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS and maintains a secondary practice location in Indianapolis.

NPPES Registry Identity

NPI1558379693

Entity TypeIndividualMale

Primary Taxonomy1223G0001X

Provider Legal NameDR. WILLIAM KENDALL MARSHALLCredential: DDS

Location Address10 W MARKET ST, 240Indianapolis, IN 46204-2954

Mailing Address10 W Market St, 240Indianapolis, IN 46204-2954 · (317) 639-3523 · Fax (317) 639-4522

Phone(317) 639-3523

Fax(317) 639-4522

Sole ProprietorYes

Enumeration DateAugust 4, 2006

Last NPPES UpdateAugust 27, 2026

NPPES CertifiedAugust 27, 2026

✔ NPI 1558379693 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · General PracticeDental Providers

Taxonomy Code1223G0001X

License✔ Licensed in IN · 12006402A

Definition

A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.

10 W MARKET ST, Indianapolis, IN 46204

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Secondary Practice Location 1

Location 11121 W Michigan StIndianapolis, IN 46202-5211 · Phone (317) 274-7433

Other Identifiers 1

Other12006402AIN · State Liscence

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health and more.Insurance ›

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 Kendall Marshall Dds is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 46204 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

$82.04 typical visit price

range $53.07 – $161.76

Typical copayment $20.51 (range $13.26 – $40.44)

Most-billed visit code 99203

Established Patient

$66.48 typical visit price

range $16.93 – $132.22

Typical copayment $16.62 (range $4.23 – $33.05)

Most-billed visit code 99213

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 Marshall's NPI number?

The NPI number for William Marshall is 1558379693. It was assigned to this individual provider in the NPPES registry on August 4, 2006.

Where is William Marshall located?

William Marshall practices at 10 W Market St 240, Indianapolis, IN 46204. The listed phone number is (317) 639-3523.

What is William Marshall's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

Is William Marshall enrolled in Medicare?

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

What insurance does William Marshall accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Anthem Blue Cross and Blue Shield and Blue Cross and Blue Shield of Montana and 3 other insurers list William Marshall as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for William Marshall was last updated on August 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.