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Cassandra Milliken , BCBA

Behavior Analyst β€’ Concord, CA

Active NPI 1013303312 Individual Practitioner Female Practitioner
Practice location in NPPES

1200 Concord Ave Ste 185
Concord, CA 945205006

Call 5102688120 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

1200 Concord Ave Ste 185

Concord, CA 945205006

Telephone 5102688120
Organization at the Same NPPES Address or Phone
Londyon Cummings Facility NPI 1215803457

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

NPI first issued

2015

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

331 active clinicians are listed under Behavior Analyst with a practice address in Concord, CA (20,363 in California).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Concord

0% of these 331 clinicians have the CMS telehealth indicator.

0% of these 331 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: 2026-04-14
Behavior Analyst Primary Specialty

NUCC Taxonomy Code: 103K00000X

License # reported to NPPES CA 1-15-19365

A behavior analyst is qualified by at least a master's degree and Behavior Analyst Certification Board certification and/or a state-issued credential (such as a license) to practice behavior analysis independently. Behavior analysts provide the required supervision to assistant behavior analysts and behavior technicians. A behavior analyst delivers services consistent with the dimensions of applied behavior analysis. Common services may include, but are not limited to, conducting behavioral assessments, analyzing data, writing and revising behavior-analytic treatment plans, training others to implement components of treatment plans, and overseeing implementation of treatment plans.

Behavior Analyst

NUCC Taxonomy Code: 103K00000X

License # reported to NPPES TX 2227

A behavior analyst is qualified by at least a master's degree and Behavior Analyst Certification Board certification and/or a state-issued credential (such as a license) to practice behavior analysis independently. Behavior analysts provide the required supervision to assistant behavior analysts and behavior technicians. A behavior analyst delivers services consistent with the dimensions of applied behavior analysis. Common services may include, but are not limited to, conducting behavioral assessments, analyzing data, writing and revising behavior-analytic treatment plans, training others to implement components of treatment plans, and overseeing implementation of treatment plans.

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

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

23 Historical Events
πŸ“
Updated Practice Location April 14, 2026

Registered at 1200 CONCORD AVE STE 185, CONCORD, CA 945205006 (Tel: 5102688120)

πŸ“
Updated Business Mailing Address April 14, 2026

Registered at 1200 CONCORD AVE STE 185, CONCORD, CA 945205006 (Tel: 5102688120)

πŸ“
Updated Practice Location October 27, 2025

Registered at 5150 VILLAGE PARK DR SE, BELLEVUE, WA 980066652 (Tel: 4256570620)

πŸ“
Updated Business Mailing Address October 27, 2025

Registered at 5150 VILLAGE PARK DR SE, BELLEVUE, WA 980066652 (Tel: 4256570620)

πŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) October 27, 2025

Behavior Analyst (license number reported to NPPES: CA 1-15-19365)

πŸ“
Updated Practice Location March 19, 2025

Registered at 2338 W ROYAL PALM RD STE J, PHOENIX, AZ 850219339 (Tel: 9515959347)

πŸ“
Updated Business Mailing Address March 19, 2025

Registered at 27777 INKSTER RD STE 100, FARMINGTON HILLS, MI 483345312 (Tel: 9515959347)

πŸ“
Updated Practice Location June 11, 2024

Registered at 501 W BROADWAY STE 800, SAN DIEGO, CA 921013546 (Tel: 9515959347)

πŸ“
Updated Business Mailing Address June 11, 2024

Registered at 7108 S KANNER HWY, STUART, FL 349977462 (Tel: 9515959347)

πŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) June 11, 2024

Behavior Analyst (license number reported to NPPES: TX 2227)

πŸ“
Updated Practice Location June 05, 2024

Registered at 4585 S ANNISTON AVE, ONTARIO, CA 917614133 (Tel: 9515959347)

πŸ“
Updated Business Mailing Address June 05, 2024

Registered at 4585 S ANNISTON AVE, ONTARIO, CA 917614133 (Tel: 9515959347)

πŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) June 05, 2024

Behavior Analyst (license number reported to NPPES: CA 1-15-19365)

πŸ“
Updated Practice Location March 09, 2020

Registered at 27975 GREENLAWN CIR, LAGUNA NIGUEL, CA 926773754 (Tel: 9494248900)

πŸ“
Updated Business Mailing Address March 09, 2020

Registered at 27975 GREENLAWN CIR, LAGUNA NIGUEL, CA 926773754 (Tel: 9494248900)

πŸ“
Updated Practice Location January 08, 2019

Registered at 16782 VON KARMAN AVE STE 11, IRVINE, CA 92606 (Tel: 8552237123)

πŸ“
Updated Business Mailing Address January 08, 2019

Registered at 16782 VON KARMAN AVE STE 11, IRVINE, CA 926062417 (Tel: 8552237123)

βœ…
NPI Profile Active February 21, 2016

NPI status registered as active in NPPES database

πŸ“
Practice Location (Initial Record) February 21, 2016

Registered at 313 WINCLIFF DR, BUDA, TX 786103445 (Tel: 9515959347)

πŸ“
Business Mailing Address (Initial Record) February 21, 2016

Registered at 313 WINCLIFF DR, BUDA, TX 786103445 (Tel: 9515959347)

πŸ‘€
Provider Name / Credentials (Initial Record) February 21, 2016

Recorded as CASSANDRA MILLIKEN, BCBA

πŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) February 21, 2016

Behavior Analyst (license number reported to NPPES: TX 1-15-19365)

🟒
Initial NPI Registration & Enumeration April 13, 2015

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1013303312
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: April 13, 2015
Last Update: April 14, 2026
Sole Proprietor: No

Mailing Address

1200 Concord Ave Ste 185

Concord, CA 945205006

Phone: 5102688120

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.