Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

LAITH SOROUR AHMAD SOROUR
NPI 1861171977
Internal Medicine - Geriatric Medicine in Boston, MA

Active since July 17, 2023
1 BOSTON MEDICAL CTR PL STE 1, BOSTON, MA 02118(617) 638-8000 Get Directions Write a Review

NPPES record last updated: July 8, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Jul 8, 2026, Jul 17, 2023 (2 updates tracked since 2023).

  • Individual
  • Male
  • Internal Medicine
  • Geriatric Medicine

About LAITH SOROUR

This page provides the complete NPI Profile along with additional information for Laith Sorour, an internist established in Boston, Massachusetts with a medical specialization in Internal Medicine, focusing in geriatric medicine . The healthcare provider is registered in the NPI registry with number 1861171977 assigned on July 2023. The practitioner's primary taxonomy code is 207RG0300X with license number 3019827 (MA). The provider is registered as an individual and his NPI record was last updated July 2026.

NPI
1861171977
Provider Name
LAITH SOROUR AHMAD SOROUR
Gender
Male
Entity Type
Individual
Location Address
1 BOSTON MEDICAL CTR PL STE 1 BOSTON, MA 02118
Location Phone
(617) 638-8000
Mailing Address
911 ELMWOOD AVE APT G3 EVANSTON, IL 60202
Mailing Phone
(224) 529-8747
Is Sole Proprietor?
No
Enumeration Date
07-17-2023
Last Update Date
07-08-2026
Code Navigator

An internist like Laith Sorour is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, 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

Internal Medicine Geriatric Medicine

Taxonomy Code
207RG0300X
Type
Allopathic & Osteopathic Physicians
License No.
3019827
License State
MA
Taxonomy Description
An internist who has special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the patient's home, the office, long-term care settings such as nursing homes and the hospital.

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NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1861171977, we treat the final digit (7) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 63. The final step is to find the difference between that total and the next multiple of ten (70 - 63 = 7).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
8
Unchanged
Pos 3
6
Doubled → 12 → 1 + 2
Pos 4
1
Unchanged
Pos 5
1
Doubled → 2
Pos 6
7
Unchanged
Pos 7
1
Doubled → 2
Pos 8
9
Unchanged
Pos 9
7
Doubled → 14 → 1 + 4
Check
7
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 6 → 12 → 3 1 → 2 1 → 2 7 → 14 → 5

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 8 + 1 + 2 + 1 + 2 + 7 + 2 + 9 + 1 + 4 + 24 = 63

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 63 is 70. The difference is the calculated check digit.

70 - 63 = 7
This NPI is valid
The calculated check digit is 7, which matches the last digit of 1861171977.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Social Worker (Clinical)
1 BOSTON MEDICAL CTR PL STE 1
BOSTON, MA 02118
Emergency Medicine
1 BOSTON MEDICAL CTR PL STE 1
BOSTON, MA 02118
Emergency Medicine
1 BOSTON MEDICAL CTR PL STE 1
BOSTON, MA 02118
Counselor
1 BOSTON MEDICAL CTR PL STE 1
BOSTON, MA 02118
Internal Medicine
1 BOSTON MEDICAL CTR PL STE 1
BOSTON, MA 02118
Surgery
1 BOSTON MEDICAL CTR PL STE 1
BOSTON, MA 02118
Physician Assistant
1 BOSTON MEDICAL CTR PL STE 1
BOSTON, MA 02118
Social Worker (Clinical)
1 BOSTON MEDICAL CTR PL STE 1
BOSTON, MA 02118
Occupational Therapist
1 BOSTON MEDICAL CTR PL STE 1
BOSTON, MA 02118
Student in an Organized Health Care Education/Training Program
1 BOSTON MEDICAL CTR PL STE 1
BOSTON, MA 02118
Student in an Organized Health Care Education/Training Program
1 BOSTON MEDICAL CTR PL STE 1
BOSTON, MA 02118
Social Worker
1 BOSTON MEDICAL CTR PL STE 1
BOSTON, MA 02118
Student in an Organized Health Care Education/Training Program
1 BOSTON MEDICAL CTR PL STE 1
BOSTON, MA 02118
Pharmacist
1 BOSTON MEDICAL CTR PL STE 1
BOSTON, MA 02118
Counselor (Mental Health)
1 BOSTON MEDICAL CTR PL STE 1
BOSTON, MA 02118
Student in an Organized Health Care Education/Training Program
1 BOSTON MEDICAL CTR PL STE 1
BOSTON, MA 02118
Student in an Organized Health Care Education/Training Program
1 BOSTON MEDICAL CTR PL STE 1
BOSTON, MA 02118
Student in an Organized Health Care Education/Training Program
1 BOSTON MEDICAL CTR PL STE 1
BOSTON, MA 02118
Radiologic Technologist (Vascular-Interventional Technology)
1 BOSTON MEDICAL CTR PL STE 1
BOSTON, MA 02118
Social Worker
1 BOSTON MEDICAL CTR PL STE 1
BOSTON, MA 02118

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1861171977, enumerated as an "individual" on July 17, 2023.

The provider is located at 1 BOSTON MEDICAL CTR PL STE 1 BOSTON, MA 02118 and the phone number is (617) 638-8000.

Internal Medicine with taxonomy code 207RG0300X and a focus in Geriatric Medicine.