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DR. ARMAND ANGELO SEBASTIAN MD
NPI 1932789005
Pediatrics in Sterling, MA

Active since April 12, 2021PECOS Enrolled
50 LEOMINSTER RD, STERLING, MA 01564(978) 422-5082(978) 422-5081 Get Directions Write a Review

NPPES record last updated: August 14, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 14, 2026, Jul 4, 2024, Apr 12, 2021 (3 updates tracked since 2021).

About Dr. Armand Angelo Sebastian Md NPPES

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

DR. ARMAND ANGELO SEBASTIAN MD (NPI 1932789005) is an individual pediatrics provider in Sterling, Massachusetts, licensed in Massachusetts (1028521) and active in the NPI registry since April 2021. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1932789005
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameDR. ARMAND ANGELO SEBASTIANCredential: MD
Location Address50 LEOMINSTER RDSterling, MA 01564-2146
Mailing AddressPo Box 415348Boston, MA 02241-5348 · (800) 225-8885 · Fax (508) 334-1977
Phone(978) 422-5082
Fax(978) 422-5081
Sole ProprietorNo
Enumeration DateApril 12, 2021
Last NPPES UpdateAugust 14, 20263 updates tracked since enumeration
NPPES CertifiedAugust 14, 2026
✔ NPI 1932789005 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
Licenses✔ Licensed in MA · 1028521✔ Licensed in CT · 76714
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
50 LEOMINSTER RD, Sterling, MA 01564
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Taro Health.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. Armand Angelo Sebastian 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 Reassignment

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

Greenwich Hospital
137 mi
General Acute Care Hospital
5 PERRYRIDGE RD
Greenwich, CT 06830
  • Reassigned Medicare billing, Connecticut enrollment
  • 268 clinicians in this Medicare group
NPI 1609846088 (203) 863-3000

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 01564 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
$90.70 typical visit price
range $58.86 – $177.36
Typical copayment $22.67 (range $14.71 – $44.34)
Most-billed visit code 99203
Established Patient
$103.48 typical visit price
range $19.11 – $144.84
Typical copayment $25.87 (range $4.77 – $36.21)
Most-billed visit code 99214
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 6

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

KATHRYN JAYNE MAIER M.D.
Family Medicine
50 LEOMINSTER RD
STERLING, MA 01564
Worcester County (978) 422-5082
SU-FAN V LIN M.D., MPH
Internal Medicine
50 LEOMINSTER RD
STERLING, MA 01564
Worcester County (978) 422-5082
FILIA MIZAR VAN DESSEL MD
Internal Medicine
50 LEOMINSTER RD
STERLING, MA 01564
Worcester County (978) 422-5082
MICHAEL J FALCONE DO
Internal Medicine
50 LEOMINSTER RD
STERLING, MA 01564
Worcester County (978) 422-5082
ERIN I HANNON DPT
Physical Therapist
50 LEOMINSTER RD
STERLING, MA 01564
Worcester County (978) 422-0431
CENTRAL MASS PULMONARY PC
Internal Medicine (Critical Care Medicine)
50 LEOMINSTER RD
STERLING, MA 01564
Worcester County (978) 422-5082

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 Armand Sebastian's NPI number?

The NPI number for Armand Sebastian is 1932789005. It was assigned to this individual provider in the NPPES registry on April 12, 2021.

Where is Armand Sebastian located?

Armand Sebastian practices at 50 Leominster Rd, Sterling, MA 01564. The listed phone number is (978) 422-5082.

What is Armand Sebastian's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Armand Sebastian enrolled in Medicare?

Yes. Armand Sebastian is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Armand Sebastian's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Armand Sebastian reassigns Medicare benefits to Greenwich Hospital (Greenwich, CT). 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 Armand Sebastian's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Armand Sebastian accept?

Health plans from Anthem Blue Cross and Blue Shield and Taro Health list Armand Sebastian 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 Armand Sebastian was last updated on August 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.