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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

TAMMY NGUYEN
NPI 1922686625
Social Worker - Clinical in Middleton, MA

Active since April 01, 2021PECOS Enrolled
35 VILLAGE RD STE 100, MIDDLETON, MA 01949(646) 687-4646(844) 222-4005 Get Directions Write a Review

NPPES record last updated: October 19, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Tammy Nguyen NPPES

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

TAMMY NGUYEN (NPI 1922686625) is an individual clinical provider in Middleton, Massachusetts and active in the NPI registry since April 2021. She is enrolled in Medicare PECOS and is a graduate of Other (2021).

NPPES Registry Identity

NPI1922686625
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameTAMMY NGUYEN
Location Address35 VILLAGE RD STE 100Middleton, MA 01949-1238
Mailing Address135 Pinelawn Rd Ste 204nMelville, NY 11747-3133 · (646) 687-4646 · Fax (844) 222-4005
Phone(646) 687-4646
Fax(844) 222-4005
Sole ProprietorNo
Medical School CMSOtherGraduated 2021
Enumeration DateApril 1, 2021
Last NPPES UpdateOctober 19, 2026
NPPES CertifiedOctober 19, 2026
✔ NPI 1922686625 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
35 VILLAGE RD STE 100, Middleton, MA 01949
Open in Google Maps ↗

Other Identifiers 1

Other1215295597MA · Abelard Psychotherapy Inc

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Tammy Nguyen is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5193214062
PECOS Enrollment IDI20251030002422
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.

Medicare Billing Reassignment

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

Boston Neurobehavioral Associates, LLC
67 mi
Psychiatry
226 FIELD ST
New Bedford, MA 02740
  • Reassigned Medicare billing, Massachusetts enrollment
  • 196 clinicians in this Medicare group
NPI 1558415307 (508) 979-5557

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01949 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$0.00 typical visit price
range $58.86 – $177.36
Typical copayment $0.00 (range $14.71 – $44.34)
Most-billed visit code NA
Established Patient
$73.22 typical visit price
range $19.11 – $144.84
Typical copayment $18.30 (range $4.77 – $36.21)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 13

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

ALLA PALMA PSY.D.
Psychologist (Clinical)
35 VILLAGE RD STE 100
MIDDLETON, MA 01949
Essex County (978) 222-3131
PAULA WAMBUI NGAREGA
Behavior Analyst
35 VILLAGE RD STE 100
MIDDLETON, MA 01949
Essex County (978) 421-6808
OLIVIA DUFFY
Physical Therapist
35 VILLAGE RD STE 100
MIDDLETON, MA 01949
Essex County (857) 557-5010
SPRING VALLEY BEHAVIORAL CONSULTANTS LLC
Behavior Analyst
35 VILLAGE RD STE 100
MIDDLETON, MA 01949
Essex County (978) 560-3450
KATELYN ANDERSON LICSW
Social Worker (Clinical)
35 VILLAGE RD STE 100
MIDDLETON, MA 01949
Essex County (781) 258-2538
JENNIFER BURNS, LMHC,
Clinic/Center (Adult Mental Health)
35 VILLAGE RD STE 100
MIDDLETON, MA 01949
Essex County (617) 336-3858
JENNIFER BURNS LMHC
Counselor
35 VILLAGE RD STE 100
MIDDLETON, MA 01949
Essex County (978) 509-2688
ALISON BALLBACH
Social Worker (Clinical)
35 VILLAGE RD STE 100
MIDDLETON, MA 01949
Essex County (857) 557-5010

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 Tammy Nguyen's NPI number?

The NPI number for Tammy Nguyen is 1922686625. It was assigned to this individual provider in the NPPES registry on April 1, 2021.

Where is Tammy Nguyen located?

Tammy Nguyen practices at 35 Village Rd Ste 100, Middleton, MA 01949. The listed phone number is (646) 687-4646.

What is Tammy Nguyen's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

Is Tammy Nguyen enrolled in Medicare?

Yes. Tammy Nguyen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Tammy Nguyen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tammy Nguyen reassigns Medicare benefits to Boston Neurobehavioral Associates, LLC (New Bedford, MA). 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 Tammy Nguyen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Tammy Nguyen accept?

Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 1 other insurer list Tammy Nguyen as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Tammy Nguyen was last updated on October 19, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 25 days 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.