WILLIAM ROBERT SOMERS MD
NPI 1497716203
Internal Medicine - Hepatology in Williamsport, PA

NPI Status: Active since March 31, 2006

Contact Information

1100 GRAMPIAN BLVD
DIVINE PROVIDENCE HOSPITAL
WILLIAMSPORT, PA
ZIP 17701
Phone: (570) 326-8840
Fax: (570) 326-8843

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  • Individual
  • Male
  • Internal Medicine
  • Hepatology

About WILLIAM SOMERS

This page provides the complete NPI Profile along with additional information for William Somers, an internist established in Williamsport, Pennsylvania with a medical specialization in Internal Medicine, focusing in hepatology . The healthcare provider is registered in the NPI registry with number 1497716203 assigned on March 2006. The practitioner's primary taxonomy code is 207RI0008X with license number MD018724E (PA). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1497716203
Provider Name
WILLIAM ROBERT SOMERS MD
Gender
Male
Entity Type
Individual
Location Address
1100 GRAMPIAN BLVD DIVINE PROVIDENCE HOSPITAL WILLIAMSPORT, PA 17701
Location Phone
(570) 326-8840
Location Fax
(570) 326-8843
Mailing Address
1201 GRAMPIAN BLVD PO BOX 3127 WILLIAMSPORT, PA 17701
Is Sole Proprietor?
Yes
Enumeration Date
03-31-2006
Last Update Date
09-11-2025
Code Navigator

An internist like William Somers 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 Hepatology

Taxonomy Code
207RI0008X
Type
Allopathic & Osteopathic Physicians
License No.
MD018724E
License State
PA
Taxonomy Description
The discipline of Hepatology encompasses the structure, function, and diseases of the liver and biliary tract. The American Board of Internal Medicine considers Hepatology part of the subspecialty of gastroenterology. Physicians who identify themselves as Hepatologists usually, but not always, have been trained in gastrointestinal programs.

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)
1207RG0100XAllopathic & Osteopathic Physicians

Internal Medicine
Gastroenterology

MD018724E (PA)

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NPI 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 1497716203, we treat the final digit (3) 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 57. The final step is to find the difference between that total and the next multiple of ten (60 - 57 = 3).

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
4
Unchanged
Pos 3
9
Doubled → 18 → 1 + 8
Pos 4
7
Unchanged
Pos 5
7
Doubled → 14 → 1 + 4
Pos 6
1
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
2
Unchanged
Pos 9
0
Doubled → 0
Check
3
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 9 → 18 → 9 7 → 14 → 5 6 → 12 → 3 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 4 + 1 + 8 + 7 + 1 + 4 + 1 + 1 + 2 + 2 + 0 + 24 = 57

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

The next multiple of ten after 57 is 60. The difference is the calculated check digit.

60 - 57 = 3
This NPI is valid
The calculated check digit is 3, which matches the last digit of 1497716203.

Other Providers at the Same Location


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

Radiology (Radiation Oncology)
1100 GRAMPIAN BLVD
WILLIAMSPORT, PA 17701
Preventive Medicine (Occupational Medicine)
1100 GRAMPIAN BLVD
WILLIAMSPORT, PA 17701
Internal Medicine (Endocrinology, Diabetes & Metabolism)
1100 GRAMPIAN BLVD
WILLIAMSPORT, PA 17701
Nurse Practitioner (Family)
1100 GRAMPIAN BLVD
WILLIAMSPORT, PA 17701
Preventive Medicine (Occupational Medicine)
1100 GRAMPIAN BLVD
WILLIAMSPORT, PA 17701
Preventive Medicine (Undersea and Hyperbaric Medicine)
1100 GRAMPIAN BLVD
WILLIAMSPORT, PA 17701
Internal Medicine (Hematology & Oncology)
1100 GRAMPIAN BLVD
WILLIAMSPORT, PA 17701
Internal Medicine (Hematology & Oncology)
1100 GRAMPIAN BLVD, DIVINE PROVIDENCE HOSPITAL
WILLIAMSPORT, PA 17701
Surgery
1100 GRAMPIAN BLVD
WILLIAMSPORT, PA 17701
Specialist/Technologist (Athletic Trainer)
1100 GRAMPIAN BLVD
WILLIAMSPORT, PA 17701
Home Health
1100 GRAMPIAN BLVD, 4 SOUTH
WILLIAMSPORT, PA 17701
Hospice Care, Community Based
1100 GRAMPIAN BLVD, 4 SOUTH
WILLIAMSPORT, PA 17701
Social Worker (Clinical)
1100 GRAMPIAN BLVD, 5TH FLOOR
WILLIAMSPORT, PA 17701
Family Medicine
1100 GRAMPIAN BLVD, 4TH FLOOR
WILLIAMSPORT, PA 17701
Nurse Practitioner
1100 GRAMPIAN BLVD
WILLIAMSPORT, PA 17701
Nurse Practitioner (Family)
1100 GRAMPIAN BLVD, DIVINE PROVIDENCE HOSPITAL
WILLIAMSPORT, PA 17701
General Acute Care Hospital
1100 GRAMPIAN BLVD
WILLIAMSPORT, PA 17701
Clinical Nurse Specialist
1100 GRAMPIAN BLVD
WILLIAMSPORT, PA 17701
Dietitian, Registered
1100 GRAMPIAN BLVD, DIVINE PROVIDENCE HOSPITAL, DIABETES CENTER
WILLIAMSPORT, PA 17701
Specialist/Technologist (Athletic Trainer)
1100 GRAMPIAN BLVD
WILLIAMSPORT, PA 17701

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1497716203, enumerated as an "individual" on March 31, 2006.

The provider is located at 1100 GRAMPIAN BLVD DIVINE PROVIDENCE HOSPITAL WILLIAMSPORT, PA 17701 and the phone number is (570) 326-8840.

Internal Medicine with taxonomy code 207RI0008X and a focus in Hepatology.