Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Dr. Mark Castillo Samson , DC

Chiropractor β€’ Concord, CA

Active NPI 1780274142 Individual Practitioner Male Practitioner
Practice location in NPPES

1170 Concord Ave Ste 100
Concord, CA 945205652

Call 9256810801 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

1170 Concord Ave Ste 100

Concord, CA 945205652

Telephone 9256810801
Fax 9256810811
Organization at the Same NPPES Address or Phone
Curtis M. Martin Chiropractic, Inc Facility NPI 1588856082

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Industry payments (Open Payments)

No Open Payments records are listed for this clinician for 2019–2025.

Guide: How to read an Open Payments record

NPI first issued

2021

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Medicare assignment not listed

CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, β€œDoes your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Compared with the same specialty in Concord and California

37 active clinicians are listed under Chiropractor with a practice address in Concord, CA (11,501 in California).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Concord

0% of these 37 clinicians have the CMS telehealth indicator.

24.3% of these 37 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo Β· Report an error.

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2021-01-20
Chiropractor Primary Specialty

NUCC Taxonomy Code: 111N00000X

License # reported to NPPES CA 34786

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.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Medical Board of California.
Look Up on State Board Site

Additional State Medicaid & Healthcare Payer Identifiers

Other Identifier State License
34786 (CA)

Career & Practice History

NPI enumerated January 20, 2021.

No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from February 2021 to August 2026.

No reviews have been published yet. Leave a review.

NPI Administrative Meta

NPI Number: 1780274142
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: January 20, 2021
Last Update: January 20, 2021
Sole Proprietor: No

Other Chiropractors in Concord

All Chiropractors in Concord

Mailing Address

1170 Concord Ave Ste 100

Concord, CA 945205652

Phone: 9256810801

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.