DR. DENNIS JOSEPH BARKER D.C.
NPI 1477640209
Chiropractor in Walnut Creek, CA

Q: What is Dennis Barker's NPI number?

The NPI number for Dennis Barker is 1477640209. It was assigned to this individual provider in the NPPES registry on October 5, 2006.

Q: What is Dennis Barker's specialty?

The primary specialty registered for this NPI is Chiropractor with taxonomy code 111N00000X.

Q: When was this NPI record last updated?

The NPPES record for Dennis Barker was last updated on September 6, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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 October 05, 2006

1866 TICE VALLEY BLVD, WALNUT CREEK, CA 94595(925) 210-8000(925) 935-0960 Get Directions Write a Review

NPPES record last updated: September 6, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Dr. Dennis Joseph Barker D.c. NPPES

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

DR. DENNIS JOSEPH BARKER D.C. (NPI 1477640209) is an individual chiropractor in Walnut Creek, California, licensed in California (21640) and active in the NPI registry since October 2006. He is a graduate of Los Angeles College Of Chiropractic (1990).

NPPES Registry Identity

NPI1477640209

Entity TypeIndividualMale

Primary Taxonomy111N00000X

Provider Legal NameDR. DENNIS JOSEPH BARKERCredential: D.C.

Location Address1866 TICE VALLEY BLVDWalnut Creek, CA 94595-2224

Mailing Address1866 Tice Valley BlvdWalnut Creek, CA 94595-2224 · (925) 210-8000 · Fax (925) 935-0960

Phone(925) 210-8000

Fax(925) 935-0960

Sole ProprietorYes

Medical School CMSLos Angeles College Of ChiropracticGraduated 1990

Enumeration DateOctober 5, 2006

Last NPPES UpdateSeptember 6, 2023

✔ NPI 1477640209 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyChiropractorChiropractic Providers

Taxonomy Code111N00000X

License✔ Licensed in CA · 21640

Definition

A provider qualified by a Doctor of Chiropractic (D.C.), licensed by the State and who practices chiropractic medicine -that discipline within the healing arts which deals with the nervous system and its relationship to the spinal column and its interrelationship with other body systems.

1866 TICE VALLEY BLVD, Walnut Creek, CA 94595

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Dennis Joseph Barker D.c. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID6709837040

PECOS Enrollment IDI20050203000952

Medicare Billing Reassignment

Medicare enrollment records show Dennis Barker reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Barker Chiropractic Inc

Same address

Chiropractor

1866 TICE VALLEY BLVD
Walnut Creek, CA 94595

Reassigned Medicare billing, California enrollment

NPI 1609393677 (925) 210-8000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Chiropractic manipulative treatment, 1-2 spinal regions 98940

Chiropractic manipulative treatment focuses on adjusting your spine to improve your body's physical function. In this service, a chiropractor applies controlled force to 1-2 spinal regions. This helps to restore mobility and alleviate discomfort in those areas.

484 services47 patients

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

BARKER CHIROPRACTIC INC

Chiropractor

1866 TICE VALLEY BLVD
WALNUT CREEK, CA 94595

Contra Costa County (925) 210-8000

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 Dennis Barker's NPI number?

The NPI number for Dennis Barker is 1477640209. It was assigned to this individual provider in the NPPES registry on October 5, 2006.

Where is Dennis Barker located?

Dennis Barker practices at 1866 Tice Valley Blvd, Walnut Creek, CA 94595. The listed phone number is (925) 210-8000.

What is Dennis Barker's specialty?

The primary specialty registered for this NPI is Chiropractor with taxonomy code 111N00000X.

Is Dennis Barker enrolled in Medicare?

Yes. Dennis Barker is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Dennis Barker's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Dennis Barker reassigns Medicare benefits to Barker Chiropractic Inc (Walnut Creek, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Dennis Barker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Dennis Barker was last updated on September 6, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.