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DR. WILLIAM SIDELINGER MD
NPI 1467071209
Psychiatry & Neurology - Child & Adolescent Psychiatry in Worcester, MA

Active since April 12, 2020
309 BELMONT ST, WORCESTER, MA 01604(508) 368-3300 Get Directions Write a Review

NPPES record last updated: June 16, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jun 16, 2025, Apr 12, 2020 (2 updates tracked since 2020).

About Dr. William Sidelinger Md NPPES

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

DR. WILLIAM SIDELINGER MD (NPI 1467071209) is an individual child & adolescent psychiatry provider in Worcester, Massachusetts, licensed in Massachusetts (1023236) and active in the NPI registry since April 2020.

NPPES Registry Identity

NPI1467071209
Entity TypeIndividualMale
Primary Taxonomy2084P0804X
Provider Legal NameDR. WILLIAM SIDELINGERCredential: MD
Location Address309 BELMONT STWorcester, MA 01604-1059
Mailing Address1601 23rd Avenue South, Training Office Suite 3105 VphNashville, TN 37212
Phone(508) 368-3300
Sole ProprietorNo
Enumeration DateApril 12, 2020
Last NPPES UpdateJune 16, 20252 updates tracked since enumeration
NPPES CertifiedJune 16, 2025
✔ NPI 1467071209 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · Child & Adolescent PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0804X
License✔ Licensed in MA · 1023236
Definition

Child & Adolescent Psychiatry is a subspecialty of psychiatry with additional skills and training in the diagnosis and treatment of developmental, behavioral, emotional, and mental disorders of childhood and adolescence.

309 BELMONT ST, Worcester, MA 01604
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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.

COLLEEN MARIE DOYLE LICSW
Social Worker (Clinical)
309 BELMONT ST
WORCESTER, MA 01604
Worcester County (508) 368-4000
UNIVERSITY OF MASSACHUSETTS
Counselor (Professional)
309 BELMONT ST, WORCESTER RECOVERY CENTER AND HOSPITAL
WORCESTER, MA 01604
Worcester County (508) 368-4000
MR. ABDULLAH MAJIDI PA-C
Physician Assistant
309 BELMONT ST
WORCESTER, MA 01604
Worcester County (508) 368-0563
CRYSTALL HOLLENKAMP LICSW
Social Worker (Clinical)
309 BELMONT ST
WORCESTER, MA 01604
Worcester County (508) 368-0667
LISA HAGUE
Social Worker (Clinical)
309 BELMONT ST
WORCESTER, MA 01604
Worcester County (508) 368-0584
JEREMY WEILAND LICSW
Social Worker (Clinical)
309 BELMONT ST
WORCESTER, MA 01604
Worcester County (508) 368-0775
MS. DOROTHY YEP LICSW
Social Worker (Clinical)
309 BELMONT ST
WORCESTER, MA 01604
Worcester County (508) 368-0686
DR. MEREDITH RONAN PSY.D.
Psychologist (Clinical)
309 BELMONT ST
WORCESTER, MA 01604
Worcester County (508) 368-3437

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 Sidelinger's NPI number?

The NPI number for William Sidelinger is 1467071209. It was assigned to this individual provider in the NPPES registry on April 12, 2020.

Where is William Sidelinger located?

William Sidelinger practices at 309 Belmont St, Worcester, MA 01604. The listed phone number is (508) 368-3300.

What is William Sidelinger's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Child & Adolescent Psychiatry, with taxonomy code 2084P0804X.

When was this NPI record last updated?

The NPPES record for William Sidelinger was last updated on June 16, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.