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GABRIEL SIMON CHAIN MD
NPI 1659831139
Pediatrics - Hospice and Palliative Medicine in Boston, MA

Active since March 21, 2019PECOS EnrolledAccepts Medicare Assignment

NPPES record last updated: July 25, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jun 18, 2025, Jul 7, 2022, Aug 7, 2020 and 1 more (4 updates tracked since 2019).

About Gabriel Simon Chain Md NPPES

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

GABRIEL SIMON CHAIN MD (NPI 1659831139) is an individual hospice and palliative medicine provider in Boston, Massachusetts, licensed in Massachusetts (1022192) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS and is a graduate of Other (2017).

NPPES Registry Identity

NPI1659831139
Entity TypeIndividualMale
Primary Taxonomy2080H0002X
Provider Legal NameGABRIEL SIMON CHAINCredential: MD
Location Address55 FRUIT STBoston, MA 02114-2696
Mailing Address7 Wyatt StSomerville, MA 02143-3917 · (718) 650-0302
Phone(617) 726-2000
Sole ProprietorYes
Medical School CMSOtherGraduated 2017
Enumeration DateMarch 21, 2019
Last NPPES UpdateJuly 25, 20254 updates tracked since enumeration
NPPES CertifiedJuly 25, 2025
✔ NPI 1659831139 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPediatrics · Hospice and Palliative MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2080H0002X
Licenses✔ Licensed in MA · 1022192✔ Licensed in DE · C1-0026873
Definition
A pediatrician with special knowledge and skills to prevent and relieve the suffering experienced by patients with life-limiting illnesses. This specialist works with an interdisciplinary hospice or palliative care team to maximize quality of life while addressing physical, psychological, social and spiritual needs of both patient and family throughout the course of the disease, through the dying process, and beyond for the family. This specialist has expertise in the assessment of patients with advanced disease; the relief of distressing symptoms; the coordination of interdisciplinary patient and family-centered care in diverse venues; the use of specialized care systems including hospice; the management of the imminently dying patient; and legal and ethical decision making in end-of-life care.
Also ListedPediatricsTaxonomy 208000000X · License 25MA11471000 (NJ), 1022192 (MA)
Also ListedHospitalistTaxonomy 208M00000X · License 25MA11471000 (NJ)
55 FRUIT ST, Boston, MA 02114
Open in Google Maps ↗

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X MULTIPLE SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Home State Health, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and more.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

Gabriel Simon Chain 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 ID6002283132
PECOS Enrollment IDI20250905001729
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.

STUTI GIRISH SHROFF MD, MBBS
Pathology (Anatomic Pathology)
55 FRUIT ST
BOSTON, MA 02114
Suffolk County (617) 726-2971
NANCY WANG M.D.
Internal Medicine (Hematology & Oncology)
55 FRUIT ST
BOSTON, MA 02114
Suffolk County (017) 724-4000
DR. DUSAN HANIDZIAR M.D., PH.D.
Anesthesiology
55 FRUIT ST, GRAY-BIGELOW 444
BOSTON, MA 02114
Suffolk County (617) 726-3030
JOHN JOSEPH DANKO DO
Physical Medicine & Rehabilitation
55 FRUIT ST
BOSTON, MA 02114
Suffolk County (617) 726-2000
DR. MICHAEL ANDREW LOBRITZ M.D, PH.D.
Internal Medicine (Infectious Disease)
55 FRUIT ST, DIVISION OF INFECTIOUS DISEASE, GRJ-504
BOSTON, MA 02114
Suffolk County (617) 724-9248
MS. KELLY ELISHA TRECARTIN NP
Nurse Practitioner (Acute Care)
55 FRUIT ST, BIGALOW 852 F
BOSTON, MA 02114
Suffolk County (617) 726-7400
JAMIE MARIE ALLEN NP
Nurse Practitioner
55 FRUIT ST
BOSTON, MA 02114
Suffolk County (617) 724-4410
DR. DHAVAL SANJEEV KOLTE M.B.B.S., PH.D.
Internal Medicine (Cardiovascular Disease)
55 FRUIT ST
BOSTON, MA 02114
Suffolk County (617) 643-3238

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 Gabriel Chain's NPI number?

The NPI number for Gabriel Chain is 1659831139. It was assigned to this individual provider in the NPPES registry on March 21, 2019.

Where is Gabriel Chain located?

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

What is Gabriel Chain's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Hospice and Palliative Medicine, with taxonomy code 2080H0002X.

Is Gabriel Chain enrolled in Medicare?

Yes. Gabriel Chain 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 Gabriel Chain accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Home State Health, Ambetter from NH Healthy Families and Ambetter from Sunflower Health Plan and 1 other insurer list Gabriel Chain 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 Gabriel Chain was last updated on July 25, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.