Fillable Form N-648
Form N-648, Medical Certification for Disability, is a form used to request an exception to the English and civics testing requirements.

What is Form N-648?
Form N-648, Medical Certification for Disability Exceptions, is a document used to obtain an exception to the English or civics requirements for the United States Naturalization. It is used by applicants with a physical or developmental disability or mental impairment that has lasted or is expected to last in 12 months or more.
How to fill out Form N-648?
Do not use abbreviations or jargon when filling out Form N-648. Use common or understandable terminologies so that a person without medical training can understand your responses.
Part 1. APPLICANT INFORMATION
This section is for the applicant or patient’s use only.
Last Name
Enter your last name.
First Name
Enter your first name.
Middle Name
Enter your middle name.
USCIS A-Number
Enter your Alien Registration Number.
Address
Enter your street number and name.
U.S. Social Security Number
Enter your Social Security Number.
City
Enter your city.
State or Province
Enter the state or province where you live.
Zip Code or Postal Code
Enter your ZIP or postal code.
Telephone Number
Enter your telephone number.
E-Mail Address
Enter your email address.
Date of Birth
Enter your birthdate.
Gender
Mark Male, if you are a male.
Mark Female, if you are a female.
Part 2. MEDICAL PROFESSIONAL INFORMATION
This section is for the medical professional's use only.
Special Instructions:
Last Name
Enter your last name.
First Name
Enter your first name.
Middle Name
Enter your middle name.
Business Address
Enter your business street number and name.
City
Enter your business city address.
State or Province
Enter the state or province where you operate your business.
Zip Code or Postal Code
Enter the ZIP or postal code where you operate your business.
Telephone Number
Enter your telephone number.
License Number
Enter your license number.
Licensing State
Enter the state where you are licensed to practice medicine.
E-Mail Address
Enter your email address.
Mark all appropriate boxes.
Medical Doctor
Mark the box if you are a licensed medical doctor.
Doctor of Osteopathy
Mark the box if you are a licensed doctor of osteopathy.
Clinical Psychologist
Mark the box if you are a licensed clinical psychologist.
Enter your medical practice type.
Note: The medical professional must enter the applicant's name and USCIS A-Number on top of each page of Form N-648.
Applicant's Name
Enter the applicant's name.
USCIS A-Number
Enter the applicant's Alien Registration Number or A-Number.
Part 3. INFORMATION ABOUT DISABILITY and/or IMPAIRMENTS(S)
Enter your clinical diagnosis of the applicant's disability and or impairment.
Enter a basic description of the applicant's disability and or impairment.
Date
Enter the date you first examined the applicant regarding the conditions listed in number 1.
Location
Enter the location where you first examined the applicant. If it is the same business address on Page 1, enter Same as Business Address.
Enter the date you last examined the applicant regarding the conditions listed in number 1.
Location
Enter the location where you last examined the applicant. If it is the same business address on Page 1, enter Same as Business Address.
Yes
Mark the box if you are the regular medical professional who treats the applicant's conditions. Then, enter the duration of treatment.
No
Mark the box if you are not the regular medical professional who treats the applicant's conditions. Then, enter the necessary information below.
Name of Regularly Treating Medical Professional and Address
Last Name
Enter the last name of the medical professional who regularly treats the applicant's medical condition.
First Name
Enter the first name of the medical professional who regularly treats the applicant's medical condition.
Middle Name
Enter the middle name of the medical professional who regularly treats the applicant's medical condition.
Business Address
Enter the medical professional’s business street number and name who regularly treats the applicant's medical condition.
City
Enter the city where the medical professional who regularly treats the applicant's medical condition operates.
State or Province
Enter the state or province where the medical professional who regularly treats the applicant's medical condition operates.
Zip Code or Postal Code
Enter the ZIP or postal code where the medical professional who regularly treats the applicant's medical condition operates.
Telephone Number
Enter the telephone number of the medical professional who regularly treats the applicant's medical condition.
Explanation
Provide an explanation of why you are certifying this form instead of the applicant's regular medical professional.
Yes
Mark the box if the applicant's disability and or impairments lasted or you expect it to last in 12 months or more. If so, you may continue to fill out Form N-648.
No
Mark the box if the applicant still has disability and or impairments, and you do not expect it to last in 12 months or more. If so, go directly to the Medical Professional's Certification section because the applicant is not eligible for this exception.
Yes
Mark the box if the applicant's disability and or impairment is a result of illegal drugs intake. If so, go directly to the Medical Professional's Certification section because the applicant is not eligible for this exception.
No
Mark the box if the applicant's disability and or impairment is not a result of illegal drugs intake. If so, you may continue to fill out Form N-648.
Enter the cause of the applicant's medical disability and or impairment, if known.
Enter the clinical methods you used to diagnose the applicant's medical disability and or impairment.
Provide an explanation about the effect of the diagnosed medical condition on the applicant's ability to demonstrate knowledge and understanding of English and or civics.
Mark all applicable boxes. If none, the applicant is not eligible for this exception.
Read English
Mark the box if the diagnosed disability or impairment prevents the applicant from reading English.
Write English
Mark the box if the diagnosed disability or impairment prevents the applicant from writing English.
Speak English
Mark the box if the diagnosed disability or impairment prevents the applicant from speaking English.
Answer questions regarding United States history and civics, even in a language the applicant understands.
Mark the box if the diagnosed disability or impairment prevents the applicant from answering questions regarding the United States history and civics, even in the language he or she understands.
Yes
Mark the box if there was an interpreter during your examination of the applicant. If so, the interpreter must fill out the Interpreter Certification section.
No
Mark the box if you did not use an interpreter during your examination of the applicant.
Additional Comments
Enter additional information.
MEDICAL PROFESSIONAL'S CERTIFICATION
I am fluent in English and
Enter the language you and the applicant speak.
I certify that this applicant's identity has been verified through the following United States or State government-issued photographic identity document:
Permanent Resident Card
Mark the box if the applicant's identity has been verified through his or her permanent resident card.
State ID Number
Mark the box if the applicant's identity has been verified through his or her state identification number.
Other Identification
Mark the box if the applicant's identity has been verified through other identification. Then, provide the ID type and number.
Licensed Medical Professional Signature
Enter your signature.
Date
Enter the date upon signing Form N-648.
INTERPRETER'S CERTIFICATION
This section is for the interpreter's use only.
Interpreter Information
Last Name
Enter your last name.
First Name
Enter your first name.
Middle Name
Enter your middle name.
Address
Enter your street number and name.
City
Enter your city.
State or Province
Enter the state or province where you live.
Zip Code or Postal Code
Enter your ZIP or postal code.
Was a phone interpreter used?
Yes
Mark the box if a phone interpreter was used. If so, you are not required to complete the information below.
No
Mark the box if a phone interpreter was not used. If so, complete the information below.
Interpreter Certification
The following language
Enter the language you fluently speak.
Occurred on
Enter the date when you translated all communications between the medical professional and the applicant.
Interpreter Signature
Enter your signature.
Date
Enter the date upon signing Form N-648
APPLICANT (PATIENT) ATTESTATION/RELEASE OF INFORMATION
This section is for the applicant's use only.
If you complete this section, you authorize the medical professional to release your physical and mental health information to the U.S. Citizenship and Immigration Services.
I
Enter your name.
Authorize
Enter the medical professional's name.
Applicant or Applicant's Authorized Representative Signature
Enter your or your representative's signature.
Date
Enter the date when you or your representative has signed Form N-648.
What is the U.S. Naturalization?
Naturalization is the process of becoming a U.S. citizen if an individual is born in a foreign country.
To apply for Naturalization, you must:
What is the purpose of Form N-648?
One of the requirements for Naturalization is the ability to read, write, and speak basic English. It can be a problem for foreign applicants with physical or developmental disabilities or mental impairments. Thus, Form N-648 is used to ask for an exception to this requirement.
How to file Form N-648?
Attach the accomplished Form N-648 to your Form N-400, Application for Naturalization.