According to the American Association of Colleges of Podiatric Medicine, a Doctor of Podiatric Medicine (DPM) is a medical specialist who diagnoses and treats conditions affecting the foot, ankle, and structures of the leg.
The NVC is a Department of State (DOS) facility that handles immigrant visa-processing. liaison between USCIS, the green card applicant(s) and the consular post abroad. After USCIS approves your immigrant petition (I-130 or I-140), USCIS will submit your approval to NVC.
National Visa Center (NVC) processes all approved immigrant visa petitions after they are received from United States Citizenship and Immigration Services (USCIS) in the Department of Homeland Security (DHS) and retains them until the cases are ready for adjudication by a consular officer abroad.