DR. RICHARD JOSEPH CHADWIN MD
NPI 1811949399
Psychiatry & Neurology - Neurodevelopmental Disabilities in Sonoma, CA

Q: What is Richard Chadwin's NPI number?

The NPI number for Richard Chadwin is 1811949399. It was assigned to this individual provider in the NPPES registry on May 16, 2006.

Q: What is Richard Chadwin's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurodevelopmental Disabilities, with taxonomy code 2084P0005X.

Q: When was this NPI record last updated?

The NPPES record for Richard Chadwin was last updated on May 22, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years 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 May 16, 2006PECOS Enrolled

690 HUDSON CT, SONOMA, CA 95476(707) 849-6533 Get Directions Write a Review

NPPES record last updated: May 22, 2018. Verified against the NPPES registry weekly; last sync: August 16, 2026.

On this page

About Dr. Richard Joseph Chadwin Md NPPES

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

DR. RICHARD JOSEPH CHADWIN MD (NPI 1811949399) is an individual neurodevelopmental disabilities provider in Sonoma, California, licensed in California (G27274) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1811949399

Entity TypeIndividualMale

Primary Taxonomy2084P0005X

Provider Legal NameDR. RICHARD JOSEPH CHADWINCredential: MD

Location Address690 HUDSON CTSonoma, CA 95476

Mailing Address690 Hudson CtSonoma, CA 95476-7146 · (707) 849-6533

Phone(707) 849-6533

Sole ProprietorNo

Enumeration DateMay 16, 2006

Last NPPES UpdateMay 22, 2018

✔ NPI 1811949399 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · Neurodevelopmental DisabilitiesAllopathic & Osteopathic Physicians

Taxonomy Code2084P0005X

License✔ Licensed in CA · G27274

Definition

A neurologist who specializes in the treatment of individuals with developmental delays and learning disorders associated with cerebral palsy, spina bifida, autism, and other chronic neurologic conditions.

Also ListedPsychiatry & Neurology · PsychiatryTaxonomy 2084P0800X · License G27274 (CA)

690 HUDSON CT, Sonoma, CA 95476

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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. Richard Joseph Chadwin Md 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.

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 Richard Chadwin's NPI number?

The NPI number for Richard Chadwin is 1811949399. It was assigned to this individual provider in the NPPES registry on May 16, 2006.

Where is Richard Chadwin located?

Richard Chadwin practices at 690 Hudson Ct, Sonoma, CA 95476. The listed phone number is (707) 849-6533.

What is Richard Chadwin's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurodevelopmental Disabilities, with taxonomy code 2084P0005X.

Is Richard Chadwin enrolled in Medicare?

Yes. Richard Chadwin is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Richard Chadwin was last updated on May 22, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years 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.