GABRIEL SIMON CHAIN MD
NPI 1659831139
Pediatrics - Hospice and Palliative Medicine in Boston, MA
NPI Status: Active since March 21, 2019
- Individual
- Male
- Pediatrics
- Hospice and Palliative Medicine
- PECOS Enrolled
About GABRIEL CHAIN
This page provides the complete NPI Profile along with additional information for Gabriel Chain, a pediatrician established in Boston, Massachusetts with a medical specialization in Pediatrics, focusing in hospice and palliative medicine . The healthcare provider is registered in the NPI registry with number 1659831139 assigned on March 2019. The practitioner's primary taxonomy code is 2080H0002X with license number 1022192 (MA). The provider is registered as an individual and his NPI record was last updated July 2025. The organization operates as a single speciality business group with one or more individual providers who practice the same area of specialization.
- NPI
- 1659831139
- Provider Name
- GABRIEL SIMON CHAIN MD
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 55 FRUIT ST BOSTON, MA 02114
- Location Phone
- (617) 726-2000
- Mailing Address
- 7 WYATT ST SOMERVILLE, MA 02143
- Mailing Phone
- (718) 650-0302
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 03-21-2019
- Last Update Date
- 07-25-2025
- Code Navigator
A pediatrician like Gabriel Chain is a physician who has completed a pediatric residency and is board-certified or board-eligible in a pediatric specialty. Pediatric care providers are trained to care for newborns, infants, children and adolescents. A pediatrician could perform physical exams, manage vaccinations, monitor development milestones, diagnose illnesses, infections, injuries or other health problems, etc.
Location Map
Specialty - Primary Taxonomy
The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.
- Classification
Pediatrics Hospice and Palliative Medicine
- Taxonomy Code
- 2080H0002X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- 1022192
- License State
- MA
- Taxonomy Description
- 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.
Secondary Taxonomies
The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.
| No. | Taxonomy Code | Type | Classification / Specialization |
License No. (State) |
|---|---|---|---|---|
| 1 | 208000000X | Allopathic & Osteopathic Physicians | Pediatrics | 25MA11471000 (NJ) |
| 2 | 208000000X | Allopathic & Osteopathic Physicians | Pediatrics | 1022192 (MA) |
| 3 | 2080H0002X | Allopathic & Osteopathic Physicians | Pediatrics | C1-0026873 (DE) |
| 4 | 208M00000X | Allopathic & Osteopathic Physicians | Hospitalist | 25MA11471000 (NJ) |
Group Taxonomy 193400000X MULTIPLE SINGLE SPECIALTY GROUP
This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.
Medicare Participation & PECOS Enrollment Status
Gabriel Chain is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.
What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.
Is the provider registered in PECOS? Yes
Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes
Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes
Eligible to Order or Refer a Home Health Agency (HHA): Yes
Eligible to Order or Refer Power Mobility Devices: Yes
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NPI Validation Check Digit Calculation
The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.
| Start with the original NPI number, the last digit is the check digit and is not used in the calculation. | |||||||||
| 1 | 6 | 5 | 9 | 8 | 3 | 1 | 1 | 3 | 9 |
| Step 1: Double the value of the alternate digits, beginning with the rightmost digit. | |||||||||
| 2 | 6 | 10 | 9 | 16 | 3 | 2 | 1 | 6 | |
| Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24. | |||||||||
| 2 + 6 + 1 + 0 + 9 + 1 + 6 + 3 + 2 + 1 + 6 + 24 = 61 | |||||||||
| Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit. | |||||||||
| 70 - 61 = 9 | 9 | ||||||||
The NPI number 1659831139 is valid because the calculated check digit 9 using the Luhn validation algorithm matches the last digit of the original NPI number.
Other Providers at the Same Location
The following 20 providers are registered at the same or nearby location.
| NPI | Name / Type | Taxonomy | Address |
|---|---|---|---|
| 1982600144 | ANDREW T CHAN M.D. Individual | Internal Medicine (Gastroenterology) | 55 FRUIT ST BOSTON, MA 02114 (617) 726-3212 |
| 1538166889 | KALOYAN S TANEV MD Individual | Psychiatry & Neurology (Psychiatry) | 55 FRUIT ST WARREN 1220 BOSTON, MA 02114 (617) 726-7511 |
| 1124028238 | DR. DEBRA F WEINSTEIN MD Individual | Internal Medicine (Gastroenterology) | 55 FRUIT ST BOSTON, MA 02114 (617) 724-6007 |
| 1225023658 | BRADEN KUO M.D. Individual | Internal Medicine (Gastroenterology) | 55 FRUIT ST BLAKE 4, GI UNIT. MGH BOSTON, MA 02114 (617) 726-2132 |
| 1881680767 | DR. NANCY J GAGLIANO MD Individual | Internal Medicine | 55 FRUIT ST 4710B BOSTON, MA 02114 (617) 724-6700 |
| 1285620161 | DR. DAVID F TORCHIANA MD Individual | Thoracic Surgery (Cardiothoracic Vascular Surgery) | 55 FRUIT ST BUL 119 BOSTON, MA 02114 (617) 724-9644 |
| 1205823176 | DAVID MICHAEL SHAHIAN MD Individual | Thoracic Surgery (Cardiothoracic Vascular Surgery) | 55 FRUIT ST MGH, BULFINCH 2 BOSTON, MA 02114 (617) 643-4335 |
| 1396734570 | DR. JAY JEFFREY SCHNITZER M.D., PH.D. Individual | Surgery | 55 FRUIT ST PEDIATRIC SURGERY, WRN 11 BOSTON, MA 02114 (617) 724-1602 |
| 1538158696 | DR. THEODORE JOSEPH ONGARO MD Individual | Urology | 55 FRUIT ST GRB 1102 BOSTON, MA 02114 (617) 726-3012 |
| 1922098730 | DR. WEI CHAO MD PHD Individual | Anesthesiology | 55 FRUIT ST CLN 3 BOSTON, MA 02114 (617) 724-3267 |
| 1194715904 | DR. MAURICE ALBRIGHT MD Individual | Orthopaedic Surgery | 55 FRUIT ST YAW 3E ORTHOPAEDIC ASSOCIATES BOSTON, MA 02114 (617) 726-8523 |
| 1841280674 | DR. GREGORY YVES LAUWERS MD Individual | Pathology (Anatomic Pathology) | 55 FRUIT ST PATHOLOGY ASSOCIATES WRN 2 BOSTON, MA 02114 (617) 726-2931 |
| 1609866516 | DR. KENT BALANIS LEWANDROWSKI MD Individual | Pathology (Anatomic Pathology & Clinical Pathology) | 55 FRUIT ST GRB 5 PATHOLOGY ASSOCIATES BOSTON, MA 02114 (617) 726-2275 |
| 1114917986 | DR. JEFFREY A GELFAND MD Individual | Allergy & Immunology | 55 FRUIT ST S50-801 INFECTIOUS DISEASE ASSOCIATES BOSTON, MA 02114 (617) 726-1796 |
| 1750371563 | DR. KATHLEEN BRIGID TRAINOR PSYD Individual | Psychologist | 55 FRUIT ST YAW 6A MASSACHUSSETTS GENERAL HOSPITAL BOSTON, MA 02114 (617) 724-6300 |
| 1073503884 | DR. BOYD TAYLOR THOMPSON MD Individual | Internal Medicine (Pulmonary Disease) | 55 FRUIT ST BOSTON, MA 02114 (617) 724-3705 |
| 1992795512 | DR. RAJESH TIM GANDHI MD Individual | Internal Medicine (Infectious Disease) | 55 FRUIT ST FND 8 INFECTIOUS DISEASE ASSOCIATES BOSTON, MA 02114 (617) 726-8403 |
| 1821088451 | DR. SHIHAB AHMED MBBS Individual | Anesthesiology (Pain Medicine) | 55 FRUIT ST CLN 309 ANESTHESIA ASSOCIATES BOSTON, MA 02114 (617) 726-3030 |
| 1528058153 | DR. MARIE B DEMAY MD Individual | Internal Medicine (Endocrinology, Diabetes & Metabolism) | 55 FRUIT ST WEL 5 BOSTON, MA 02114 (617) 726-8720 |
| 1225028863 | DR. MICHELE TRUCKSIS MD PHD Individual | Internal Medicine | 55 FRUIT ST INFECTIOUS DISEASE ASSOCIATES GRJ 504 BOSTON, MA 02114 (617) 726-3812 |
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1659831139, enumerated in the NPI registry as an "individual" on March 21, 2019
The provider is located at 55 Fruit St Boston, Ma 02114 and the phone number is (617) 726-2000
The provider's speciality is Pediatrics with taxonomy code 2080H0002X with a focus in Hospice and Palliative Medicine
Yes, as of June 20, 2025 the provider is registered in PECOS and is eligible to order health care services or supplies for Medicare patients. If you are a beneficiary the provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.
This NPI record was last updated on March 21, 2019. To officially update your NPI information contact the National Plan and Provider Enumeration System (NPPES) at 1-800-465-3203 (NPI Toll-Free) or by email at [email protected].
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