Chrystal Santos
Behavior Analyst β’ Greenfield, MA
714 Country Club Rd
Greenfield, MA 013019786
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
714 Country Club Rd
Greenfield, MA 013019786
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Behavior Analyst: NPPES taxonomy is a reported classification, not proof of board certification.
NPI first issued
2009
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, βDoes your provider accept Medicare as full payment?β
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.
Compared with the same specialty in Greenfield and Massachusetts
3 active clinicians are listed under Behavior Analyst with a practice address in Greenfield, MA (4,730 in Massachusetts).
Addresses are self-reported to NPPES and may be out of date.
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: 2026-07-20NUCC Taxonomy Code: 103K00000X
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.
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 63 FRENCH KING HWY STE 9, GREENFIELD, MA 013011337 (Tel: 4133674990)
Registered at 714 COUNTRY CLUB RD, GREENFIELD, MA 013019786 (Tel: 7895011437)
Registered at 714 COUNTRY CLUB RD, GREENFIELD, MA 013019786 (Tel: 9785011437)
Behavior Analyst
NPI status registered as active in NPPES database
Registered at 321 FORTUNE BLVD, MILFORD, MA 017571750 (Tel: 5084780207)
Registered at 321 FORTUNE BLVD, MILFORD, MA 017571750 (Tel: 5084780207)
Recorded as CHRYSTAL SANTOS
Developmental Therapist
NPI status registered as active in NPPES database
Registered at 321 FORTUNE BLVD, MILFORD, MA 017571750 (Tel: 5084780207)
Registered at 321 FORTUNE BLVD, MILFORD, MA 017571750 (Tel: 5084780207)
Recorded as CHRYSTAL FELLOWS
Developmental Therapist
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Mailing Address
63 French King Hwy Ste 9
Greenfield, MA 013011337
Phone: 4133674990