Family and Occupational Health PhysicianAdult and Child Medicine PhysicianFormer College ProfessorFellow (FPCHA), Philippine College of Hospital Administrators Fellow (FPAMS), Philippine Academy of Medical SpecialistsFellow (FPSMSG) and Member, The Philippine Society of Medical Specialists in Government Service Fellow (FIAMS) and Member, International Academy of Medical SpecialistsDiplomate (DPAMS) and Member, Philippine Academy of Medical SpecialistsDiplomate (DipHLM) in Healthcare Leadership and Management, Certified Hospital Administrator (CHA), Philippine College of Hospital Administrators Certified Primary Care Family Physician (CP-CFP) and Regular Member, Philippine Academy of Family Physicians Pharmacist - Medical Doctor, Involved in Occupational Medicine, General Adult and Child Medicine. Interests revolve in Primary Preventive Medicine, Diabetology, Cardiovascular Risk Reduction Strategies in the Primary Care level. Underwent training under the Philippine College of Occupational Medicine, Philippine Society of Nephrology (For non-nephrologist physicians) and Philippine Society of Venereologists (HIV/STI and Advanced PrEP Diploma Course)Member, Angeles City Medical SocietyMember, Philippine Society of HypertensionMember, Diabetes PhilippinesMember, Philippine Pharmacists' AssociationMember, Philippine Association of Colleges of PharmacyOnline Consultation Platform:https://seriousmd.com/doc/nathaniel-miguel-mercadohttps://patients.ppd.ph/doctor/nathaniel-miguel-mercadoHospital Affiliations for Admissions:The Medical City – Clark, AUF Medical CenterTiglao Medical Center FoundationSt. Raphael Foundation and Medical CenterDr. Amando L. Garcia Medical Center, Inc.Angeles Medical Center, Inc.AC Sacred Heart Medical CenterPRI Medical CenterSt. Catherine of Alexandria Foundation and Medical CenterOur Lady of Mount Carmel Medical CenterMother Teresa of Calcutta Medical CenterSan Fernandino HospitalGreenCity Medical CenterV.L. Makabali Memorial Hospital, Inc.Pampanga EENT and General HospitalLeonardo B Manabat Sr. Hospital, Inc.,Pampanga Premier Medical Center Apalit Doctors Hospital, Inc. ASCCOM-DLSUMC Friendship Hospital E.D.Lim Medical CenterFloridablanca Doctors HospitalPampanga Medical Specialist Hospital, San Antonio, GuaguaRosario Memorial Center of Guagua, San Roque, GuaguaSt. Joseph Hospital of Remedios, Remedios, LubaoHoly Trinity Medical Center. Plazang Luma, Jose Abad Santos Ave, Arayat