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

DR. OLGA SINYAVSKAYA MD
NPI 1861052342
Psychiatry & Neurology - Child & Adolescent Psychiatry in Boston, MA

Active since June 18, 2019PECOS EnrolledAccepts Medicare Assignment

NPPES record last updated: June 24, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Olga Sinyavskaya Md NPPES

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

DR. OLGA SINYAVSKAYA MD (NPI 1861052342) is an individual child & adolescent psychiatry provider in Boston, Massachusetts, licensed in Massachusetts (292756) and active in the NPI registry since June 2019. She is enrolled in Medicare PECOS and is a graduate of University Of Chicago, Pritzker School Of Medicine (2019).

NPPES Registry Identity

NPI1861052342
Entity TypeIndividualFemale
Primary Taxonomy2084P0804X
Provider Legal NameDR. OLGA SINYAVSKAYACredential: MD
Location Address55 FRUIT STBoston, MA 02114-2621
Mailing Address1 Leighton St Unit 1012Cambridge, MA 02141-2428 · Fax (774) 283-6510
Sole ProprietorNo
Medical School CMSUniversity Of Chicago, Pritzker School Of MedicineGraduated 2019
Enumeration DateJune 18, 2019
Last NPPES UpdateJune 24, 2026
NPPES CertifiedJune 24, 2026
NPI 1861052342 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPsychiatry & Neurology · Child & Adolescent PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0804X
License Licensed in MA · 292756
Definition
Child & Adolescent Psychiatry is a subspecialty of psychiatry with additional skills and training in the diagnosis and treatment of developmental, behavioral, emotional, and mental disorders of childhood and adolescence.
55 FRUIT ST, Boston, MA 02114

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Dr. Olga Sinyavskaya Md 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 ID4082941844
PECOS Enrollment IDI20241206002173
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.

Other Providers at the Same Location NPPES 20

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

Pathology (Anatomic Pathology)
55 FRUIT ST
BOSTON, MA 02114
Internal Medicine (Hematology & Oncology)
55 FRUIT ST
BOSTON, MA 02114
Anesthesiology
55 FRUIT ST, GRAY-BIGELOW 444
BOSTON, MA 02114
Physical Medicine & Rehabilitation
55 FRUIT ST
BOSTON, MA 02114
Internal Medicine (Infectious Disease)
55 FRUIT ST, DIVISION OF INFECTIOUS DISEASE, GRJ-504
BOSTON, MA 02114
Nurse Practitioner (Acute Care)
55 FRUIT ST, BIGALOW 852 F
BOSTON, MA 02114
Nurse Practitioner
55 FRUIT ST
BOSTON, MA 02114
Internal Medicine (Cardiovascular Disease)
55 FRUIT ST
BOSTON, MA 02114

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 Olga Sinyavskaya's NPI number?

The NPI number for Olga Sinyavskaya is 1861052342. It was assigned to this individual provider in the NPPES registry on June 18, 2019.

Where is Olga Sinyavskaya located?

Olga Sinyavskaya practices at 55 Fruit St, Boston, MA 02114. The listed phone number is (617) 726-2000.

What is Olga Sinyavskaya's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Child & Adolescent Psychiatry, with taxonomy code 2084P0804X.

Is Olga Sinyavskaya enrolled in Medicare?

Yes. Olga Sinyavskaya 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.

What insurance does Olga Sinyavskaya accept?

Health plans from Anthem Blue Cross and Blue Shield, Harvard Pilgrim Health Care and Providence Health Plan list Olga Sinyavskaya 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 Olga Sinyavskaya was last updated on June 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 54 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.