CHARBEL F MATAR MD
NPI 1811564172
Internal Medicine - Hematology & Oncology in Prince Frederick, MD

NPI Status: Active since June 07, 2021

Contact Information

110 HOSPITAL RD STE 105
PRINCE FREDERICK, MD
ZIP 20678
Phone: (410) 414-9116
Fax: (410) 414-9118

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  • Individual
  • Male
  • Internal Medicine
  • Hematology & Oncology

About CHARBEL MATAR

This page provides the complete NPI Profile along with additional information for Charbel Matar, an internist established in Prince Frederick, Maryland with a medical specialization in Internal Medicine, focusing in hematology & oncology . The healthcare provider is registered in the NPI registry with number 1811564172 assigned on June 2021. The practitioner's primary taxonomy code is 207RH0003X with license number D0106667 (MD). The provider is registered as an individual and his NPI record was last updated June 2026.

NPI
1811564172
Provider Name
CHARBEL F MATAR MD
Gender
Male
Entity Type
Individual
Location Address
110 HOSPITAL RD STE 105 PRINCE FREDERICK, MD 20678
Location Phone
(410) 414-9116
Location Fax
(410) 414-9118
Mailing Address
110 HOSPITAL RD STE 105 PRINCE FREDERICK, MD 20678
Mailing Phone
(410) 414-9116
Mailing Fax
(410) 414-9118
Is Sole Proprietor?
No
Enumeration Date
06-07-2021
Last Update Date
06-04-2026
Code Navigator

An internist like Charbel Matar 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

Secondary Locations

  • 130 Hospital Rd Ste 201
    Prince Frederick, MD 20678
    (410) 414-9116
  • 110 Hospital Rd Ste 110
    Prince Frederick, MD 20678
    (410) 414-9116

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 Hematology & Oncology

Taxonomy Code
207RH0003X
Type
Allopathic & Osteopathic Physicians
License No.
D0106667
License State
MD
Taxonomy Description
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

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)
1390200000XStudent, Health Care

Student in an Organized Health Care Education/Training Program

 

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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 1811564172, we treat the final digit (2) 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 58. The final step is to find the difference between that total and the next multiple of ten (60 - 58 = 2).

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
1
Doubled → 2
Pos 4
1
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
6
Unchanged
Pos 7
4
Doubled → 8
Pos 8
1
Unchanged
Pos 9
7
Doubled → 14 → 1 + 4
Check
2
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 1 → 2 5 → 10 → 1 4 → 8 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 + 2 + 1 + 1 + 0 + 6 + 8 + 1 + 1 + 4 + 24 = 58

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

The next multiple of ten after 58 is 60. The difference is the calculated check digit.

60 - 58 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1811564172.

Other Providers at the Same Location


The following 4 providers are registered at the same or a nearby location.

Clinical Nurse Specialist (Adult Health)
110 HOSPITAL RD STE 105
PRINCE FREDERICK, MD 20678
Internal Medicine (Hematology & Oncology)
110 HOSPITAL RD STE 105
PRINCE FREDERICK, MD 20678
Internal Medicine (Hematology & Oncology)
110 HOSPITAL RD STE 105
PRINCE FREDERICK, MD 20678
Internal Medicine (Hematology & Oncology)
110 HOSPITAL RD STE 105
PRINCE FREDERICK, MD 20678

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1811564172, enumerated as an "individual" on June 07, 2021.

The provider is located at 110 HOSPITAL RD STE 105 PRINCE FREDERICK, MD 20678 and the phone number is (410) 414-9116.

Internal Medicine with taxonomy code 207RH0003X and a focus in Hematology & Oncology.