Doctor Credentials and Abbreviations: What Do They Mean?

Common Doctor Credentials and Abbreviations

Full List of Common Doctor Credentials and Abbreviations

  • MD (Doctor of Medicine) – Allopathic physician trained in conventional medicine.

  • DO (Doctor of Osteopathic Medicine) – Physician trained in holistic care and musculoskeletal system.

  • MBBS (Bachelor of Medicine, Bachelor of Surgery) – Common international equivalent of MD.

  • DPM (Doctor of Podiatric Medicine) – Specialist in foot and ankle care.

  • DDS / DMD (Doctor of Dental Surgery / Doctor of Dental Medicine) – Credentials for dentists (training is identical).

  • OD (Doctor of Optometry) – Specialist in vision care and eye health.

  • PharmD (Doctor of Pharmacy) – Licensed pharmacist with expertise in medications.

  • DPT (Doctor of Physical Therapy) – Specialist in rehabilitation and physical therapy.

  • DNP (Doctor of Nursing Practice) – Advanced practice degree for nurses in leadership and clinical care.

  • PhD (Doctor of Philosophy) – Research doctorate, sometimes held by medical researchers or academic professionals.

  • PA-C (Certified Physician Assistant) – Licensed physician assistant practicing under supervision.

  • APRN (Advanced Practice Registered Nurse) – Advanced-level nurse, including roles such as:

    • NP (Nurse Practitioner)

    • CNM (Certified Nurse Midwife)

    • CRNA (Certified Registered Nurse Anesthetist)

Doctor Credentials and Abbreviations: What Do They Mean?

What Does MD Stand For?

MD (Doctor of Medicine) – An allopathic doctor trained in diagnosing, treating, and preventing diseases using conventional medicine.

What Is a DO in Medicine?

DO (Doctor of Osteopathic Medicine) – A physician trained in holistic care and musculoskeletal health, with the same practice rights as MDs in most countries.

What Is an MBBS Degree?

MBBS (Bachelor of Medicine, Bachelor of Surgery) – An undergraduate medical degree, awarded in the UK, India, and other countries. Equivalent to MD in the U.S. system.

What Does DPM Mean?

DPM (Doctor of Podiatric Medicine) – A specialist in foot, ankle, and lower limb conditions.

What Are DDS and DMD?

  • DDS (Doctor of Dental Surgery)

  • DMD (Doctor of Dental Medicine)
    Both credentials represent dentists with identical training and qualifications.

What Does OD Stand For in Healthcare?

OD (Doctor of Optometry) – An eye care professional who diagnoses and treats vision problems and prescribes corrective lenses.

What Is a PharmD Degree?

PharmD (Doctor of Pharmacy) – A licensed pharmacist specializing in medication management and patient care.

What Does DPT Mean?

DPT (Doctor of Physical Therapy) – A professional degree for physical therapists who help patients recover mobility and function.

What Is a DNP?

DNP (Doctor of Nursing Practice) – The highest practice-based degree for nurses, focusing on leadership, clinical expertise, and advanced patient care.

What Is a PhD in Healthcare?

PhD (Doctor of Philosophy) – A research doctorate. While not always clinical, many healthcare professionals hold a PhD in specialized fields.

What Does PA-C Stand For?

PA-C (Certified Physician Assistant) – A mid-level provider licensed to practice medicine under physician supervision.

What Is an APRN?

APRN (Advanced Practice Registered Nurse) – A nurse with advanced training. Subtypes include:

  • NP (Nurse Practitioner)

  • CNM (Certified Nurse Midwife)

  • CRNA (Certified Registered Nurse Anesthetist)

Common Doctor Credentials by Category

Physician Credentials

  • MD – Allopathic physician trained in conventional medicine.

  • DO – Osteopathic physician with holistic training.

  • MBBS – International equivalent to MD.

Dental Credentials

  • DDS – Doctor of Dental Surgery.

  • DMD – Doctor of Dental Medicine.

Vision Credentials

  • OD – Doctor of Optometry.

Pharmacy Credentials

  • PharmD – Doctor of Pharmacy.

Physical Therapy Credentials

  • DPT – Doctor of Physical Therapy.

Nursing Credentials

  • DNP – Doctor of Nursing Practice.

  • APRN – Advanced Practice Registered Nurse (NP, CNM, CRNA).

Allied Health Credentials

  • DPM – Doctor of Podiatric Medicine.

  • PA-C – Certified Physician Assistant.

Academic & Research Credentials

  • PhD – Doctor of Philosophy (research doctorate).

Doctor Credentials Comparison Table

CredentialFull FormSpecialty / Role
MDDoctor of MedicineAllopathic physician practicing conventional medicine
DODoctor of Osteopathic MedicinePhysician with holistic training and musculoskeletal focus
MBBSBachelor of Medicine, Bachelor of SurgeryInternational equivalent to MD (UK, India, etc.)
DDS / DMDDoctor of Dental Surgery / Doctor of Dental MedicineDental professionals with identical training
ODDoctor of OptometrySpecialist in eye care and vision correction
PharmDDoctor of PharmacyLicensed pharmacist with expertise in medications
DPTDoctor of Physical TherapySpecialist in rehabilitation and recovery
DNPDoctor of Nursing PracticeAdvanced nursing degree for leadership and patient care
APRNAdvanced Practice Registered NurseIncludes NP, CNM, CRNA; advanced nursing practitioners
DPMDoctor of Podiatric MedicineSpecialist in foot, ankle, and lower limb care
PA-CCertified Physician AssistantLicensed provider practicing under physician supervision
PhDDoctor of PhilosophyResearch doctorate (often in medical sciences or academia)