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Medicare Beneficiary Identifier (MBI) & Name to Number Converter

Medicare Beneficiary Identifier (MBI) Converter

Enter the Medicare Beneficiary Identifier (MBI) to convert letters to numbers for use on your telephone keypad when calling CGS Customer Support or the Interactive Voice Response (IVR).

The following chart shows the telephone keypad sequence for each letter.

Letter Telephone Keypad
A *21
B Not a valid option
C *23
D *31
E *32
F *33
G *41
Letter Telephone Keypad
H *42
I Not a valid option
J *51
K *52
L Not a valid option
M *61
N *62
Letter Telephone Keypad
O Not a valid option
P *71
Q *11
R *72
S Not a valid option
T *81
U *82
Letter Telephone Keypad
V *83
W *91
X *92
Y *93
Z Not a valid option

NOTE: This conversion tool does not validate the beneficiary's Medicare number or eligibility to Medicare. It only provides the information you need to enter using the telephone keypad when using the IVR and is based only on the information you enter. The IVR will validate the beneficiary information.

Beneficiary Name to Number Converter

Enter the beneficiary's first initial of their first name and the first 6 letters of their last name in the "Enter Name" field. When the last name is less than 6 letters, the converted number must be followed by '#' when you enter it on your telephone keypad.


Beneficiary Name First initial/Last Name entered into converter Converted Number Numbers used to enter on the telephone keypad
Susan Johnson Sjohnso 7-5-6-4-6-7-6 7-5-6-4-6-7-6
Mary Jones Mjones 6-5-6-6-3-7 6-5-6-6-3-7-#
John Lee III jleeiii 5-5-3-3-4-4-4 5-5-3-3-4-4-4
John Lee Jr jleejr 5-5-3-3-5-7 5-5-3-3-5-7-#
John Lee Jlee 5-5-3-3 5-5-3-3-#

Disclaimer: CGS' online tools and calculators are informational and educational tools only, designed to assist suppliers and providers in submitting claims correctly. CGS makes no guarantee that this resource will result in Medicare reimbursement for services provided. Although we've made every reasonable effort to provide effective resources, CGS is not responsible for the consequences of any decisions or actions taken in reliance upon or as a result of the information that these tools provide. CGS is not responsible for any human or mechanical errors or omissions.


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