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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.

DR. SADIA MOHYUD DIN CHAUDHARY MD
NPI 1861946543
Psychiatry & Neurology - Psychiatry in Lexington, MA

Active since August 10, 2016PECOS Enrolled
35 BEDFORD ST STE 17, LEXINGTON, MA 02420(781) 218-9550 Get Directions Write a Review

NPPES record last updated: October 16, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 16, 2026, Aug 3, 2020, Aug 10, 2016 (3 updates tracked since 2016).

About Dr. Sadia Mohyud Din Chaudhary Md NPPES

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

DR. SADIA MOHYUD DIN CHAUDHARY MD (NPI 1861946543) is an individual psychiatry provider in Lexington, Massachusetts, licensed in Massachusetts (1022074) and active in the NPI registry since August 2016. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1861946543
Entity TypeIndividualFemale
Primary Taxonomy2084P0800X
Provider Legal NameDR. SADIA MOHYUD DIN CHAUDHARYCredential: MD
Location Address35 BEDFORD ST STE 17Lexington, MA 02420-4440
Mailing Address35 Bedford St Ste 17Lexington, MA 02420-4440 · (781) 218-9550
Phone(781) 218-9550
Sole ProprietorNo
Enumeration DateAugust 10, 2016
Last NPPES UpdateOctober 16, 20263 updates tracked since enumeration
NPPES CertifiedOctober 16, 2026
✔ NPI 1861946543 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
Licenses✔ Licensed in MA · 1022074✔ Licensed in NH · 35071
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
35 BEDFORD ST STE 17, Lexington, MA 02420
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Harvard Pilgrim Health Care, Oscar Health 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 (PECOS)

Dr. Sadia Mohyud Din Chaudhary Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Reassignments

3

Medicare enrollment records show Sadia Chaudhary reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Zen Psychiatry LLC
199 mi
Psychiatry
90 E HALSEY RD STE 333
Parsippany, NJ 07054
  • Reassigned Medicare billing, Maryland enrollment
NPI 1740951029 (857) 452-1357
Iowa Physicians Clinic Medical Foundation
1,021 mi
General Practice
1518 MULBERRY AVENUE
Muscatine, IA 52761
  • Reassigned Medicare billing, Iowa enrollment
  • 1,506 clinicians in this Medicare group
NPI 1982831426 (515) 471-9300
Allen Memorial Hospital Corporation
1,076 mi
Emergency Medicine
1825 LOGAN AVE
Waterloo, IA 50703
  • Reassigned Medicare billing, Iowa enrollment
  • 273 clinicians in this Medicare group
NPI 1346292521 (319) 235-3941

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 02420 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
$189.86 typical visit price
range $63.72 – $189.86
Typical copayment $47.46 (range $15.93 – $47.46)
Most-billed visit code 99205
Established Patient
$78.84 typical visit price
range $21.07 – $155.29
Typical copayment $19.71 (range $5.26 – $38.82)
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 4

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

BOSTON BEHAVIORAL HEALTH ASSOCIATES INC
Clinic/Center (Adolescent and Children Mental Health)
35 BEDFORD ST STE 17
LEXINGTON, MA 02420
Middlesex County (781) 218-9550
LEXINGTON PSYCHIATRIC & COUSELING ASSOC.
Psychologist
35 BEDFORD ST STE 17
LEXINGTON, MA 02420
Middlesex County (781) 863-5320
PETER STEVEN FELDMAN D.P.H.
Psychologist (Clinical)
35 BEDFORD ST STE 17
LEXINGTON, MA 02420
Middlesex County (781) 863-5320
JON CUNHA
Counselor (Mental Health)
35 BEDFORD ST STE 17
LEXINGTON, MA 02420
Middlesex County (781) 530-4138

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 Sadia Chaudhary's NPI number?

The NPI number for Sadia Chaudhary is 1861946543. It was assigned to this individual provider in the NPPES registry on August 10, 2016.

Where is Sadia Chaudhary located?

Sadia Chaudhary practices at 35 Bedford St Ste 17, Lexington, MA 02420. The listed phone number is (781) 218-9550.

What is Sadia Chaudhary's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Sadia Chaudhary enrolled in Medicare?

Yes. Sadia Chaudhary is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Sadia Chaudhary's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sadia Chaudhary reassigns Medicare benefits to 3 organizations: Zen Psychiatry LLC (Parsippany, NJ), Iowa Physicians Clinic Medical Foundation (Muscatine, IA) and Allen Memorial Hospital Corporation (Waterloo, IA). Each 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 Sadia Chaudhary's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Sadia Chaudhary accept?

Health plans from Anthem Blue Cross and Blue Shield, Harvard Pilgrim Health Care, Oscar Health and UnitedHealthcare list Sadia Chaudhary 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 Sadia Chaudhary was last updated on October 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.