Published Oct 12, 2022
Updated Jun 9, 2026

Breaking Down Primary Care: Family Medicine Vs. Internal Medicine

Written by  Lacey Ramburger
Reviewed by  Rhonda Sparks, MD

Article at a glance

  • Primary care is a term referring to health care services provided by doctors and their health care teams to help prevent, diagnose, and treat a patient’s medical needs.

  • There are multiple types of Primary Care doctors and advanced practice providers (APPs) —the most common falling into the fields of Internal Medicine and Family Medicine.

  • This can include MDs, DOs, Nurse Practitioners (NPs), and Physicians Assistants (PAs)

  • An Internal Medicine provider (internist) focuses more specifically on managing and treating chronic illnesses in adult patients.

  • A Family Medicine provider focuses more on treating a broader variety of illnesses in patients ranging from newborns to the elderly.

Doctor holding tablet with patients in exam room

While many people understand that when they become ill, they visit a doctor or hospital, they may not have a primary care provider (PCP) that they see consistently for their medical needs. primary care providers are trained to help treat and care for a variety of medical illnessesand can be a vital part of maintaining the health and well-being of a patient. 

What is Primary Care?

Primary care is an arrangement of accessible and varying health care services provided by doctors, APPs, and their health care teams. These doctors and their teams work together to help diagnose, prevent, and treat a wide majority of health needs. Additionally, a goal of primary care is to establish and develop an ongoing partnership with their patients regarding their health. Primary care often includes things such as:

  • Performing physicals

  • Prescribing medications

  • Screening for common health problems

  • Managing chronic illnesses, such as high blood pressure

What is a Primary Care Provider?

A primary care provider (PCP) is a healthcare provider who diagnoses and treats a wide array of illnesses. They provide comprehensive care to various ages, from infants to elderly patients, and are often the main medical professionals a person goes to, barring an urgent emergency. These providers, be it NPs, PAs, or Doctors, are trained to work with patients across a variety of approaches to help prevent and treat illnesses.

Note: For tips on choosing a primary care physician, visit this source.

older man standing outside smiling

Why Does A Person Need A PCP?

It’s important to have a medical professional with whom a person has established a consistent relationship with regarding medical history and potential illnesses in the future. While some may go to the doctor only when they are ill, having a primary care doctor can help a person prevent future illness, identify genetic diseases they may contract, and treat acute illnesses to prevent worsening symptoms.

Different Types of Primary Care

When it comes to care, there are a few types of primary care specialties. The two primary care physician types that are commonly confused are internal medicine physicians and family physicians. Here is how they differ:

Family Medicine: A medical doctor or family nurse practitioner who provides treatment and preventative care for patients ranging in age from newborns to patients in their later years. Family medicine training programs require training in adult healthcare and pediatric care. Many family medicine physicians (also referred to as family doctors or family practitioners) care for all members of a family, bringing a unique and valuable perspective to providing care for each family member.

Internal Medicine: A medical doctor or advanced practice provider(APP) who specializes in diagnosing, treating, and preventing disease in adult patients. Often, internal medicine focuses on chronic illnesses that commonly affect adults. However, an internal medicine physician commonly treats a wide range of patients for a variety of primary care reasons. Most internal medicine providers work in outpatient medicine. In some healthcare systems, they may also treat health conditions in inpatient hospital experiences. This work may include diagnosing minor illnesses and coordinating inpatient subspecialty services for more severe health conditions.

What Types of Patients Are Seen by Family Medicine Providers?

Family medicine doctors can treat a wide range of patients, including:
 

  • Newborns
  • Children (Pediatrics)
  • Adolescents
  • Adults
  • Elderly Patients (Geriatrics)
older patients laughing around a table

What Type of Patients Are Seen by Internal Medicine Providers

Internal medicine doctors focus on treating adult patients and disease prevention in adult populations. However, they occasionally do treat children—but they must have additional training in pediatrics to do so.

What Are The Benefits of Family Medicine?

Some of the benefits of a Family Medicine approach include:

  • Family Medicine doctors and nurse practitioners are able to treat a variety of ages, meaning they can serve as primary care providers to an entire family.

  • Family Medicine doctors and nurse practitioners can provide many of the services of a gynecologist, among other services pertaining to women’s health, if needed.

  • Caring for an entire family gives a primary care provider a unique perspective to more effectively care for each member of the family.

What Are The Benefits of Internal Medicine?

Some of the benefits of an Internal Medicine approach include:
 

  • Having an internal medicine doctor or adult nurse practitioner who specializes in treatment for adults—meaning there is a more intense study into illnesses targeting that demographic.
  • Diagnosis and treatments of more complex medical conditions and may use more hospitalization methods if necessary.
  • Their training offers the ability to connect and work with internal medicine subspecialty colleagues—which can be helpful for patients with medically complex situations.

Family Medicine vs. Internal Medicine: Education Levels

Both internal medicine and family medicine doctors are required to attend medical school and then complete three years of residency training in their respective fields.

After residency training, there are differences for each provider. Internal medicine doctors are required to spend three years working with hospitalized patients. Internal medicine education focuses on training in emergency medicine, critical care, and medical subspecialty care. Internal medicine subspecialties distinguish the internist education route from that of family medicine as it provides internists with a way to advance their learning in special areas such as palliative care, infectious diseases, cardiology, and more.

Family medicine doctors spend their first year also being trained in a hospital setting with patients in a similar way, yet divide their remaining two years into working in pediatrics, OBGYN practices, and other outpatient medical categories. 

For PAs and NPs, after a 4‑year bachelor’s degree, they obtain either a Master’s or Doctorate in either Family or Adult Medicine. A Master’s degree is an additional two years, and a Doctorate is an additional 3–4 years. They usually complete one year of clinical rotations in various specialties depending on the chosen specialization.
 

How to Choose Between Internist and Family Providers

Family medicine and internal medicine are very similar fields, making it difficult to pick between a family physician and an internist. While both are great options to work with, how does a person choose whether to seek care with an Internal Medicine vs. Family Medicine clinician? There are a few important factors to keep in mind when making a decision:

Location: Which doctors are available in the area? Is there easy accessibility within a reasonable traveling distance?

Family Members: Is a person seeking primary care for just themselves or for multiple family members? If only one person is seeking care, then either option can work, but it’s likely that an Internist doctor would be more beneficial. If a person is looking for primary care for a family, a family medicine doctor may be a better option.

Medical Complexity: What type of medical situation is a patient dealing with? Internal medicine clinicians may have a larger fund of clinical knowledge on chronic medical problems, especially those more complex issues. Family medicine providers typically treat a broader variety of illnesses and may refer a patient to a specialist for more complex issues.

Age of Patient: While family medicine doctors typically see patients ranging from newborns to geriatric patients, internal medicine doctors tend to focus on patients 18 and over. 
 

What to Look For When Selecting a Provider

Once a person has narrowed down the type of care they prefer, there are some factors to keep in mind when choosing a specific doctor:

  • Proper educational training

  • Level of experience they have practicing as a doctor outside of residency

  • Location and availability to the patient

  • Reputation in the medical community and with other patients.

FAQ

How do I choose between family medicine and internal medicine?

Whether to go with a primary care physician in family or internal medicine depends on your specific needs. Both provider types are adept at general medicine, preventive care, and addressing adult medical issues. Since family physicians treat patients of all age groups, a family medicine doctor may suit your needs better if you are looking for a doctor to treat your entire family. This is especially useful for those looking for continuous care across patient age ranges or who want to tackle multiple family appointments in one day. An internal medicine doctor may be a better fit if you have complex medical conditions that need more focused treatment. Internal medicine training also covers practices for co managing complex patients . This means internal medicine physicians focus collaborating with other medical specialties to coordinate care for chronic diseases, making them especially beneficial for those with multiple health issues.

 Can family medicine doctors do internal medicine?

Yes, but a family medicine doctor would need to complete additional residency after medical school to be able to practice internal medicine. This residency would provide specialized training in treating various adult diseases, managing chronic conditions, and other complex medical situations that are not covered in most training programs for family physicians.

What type of doctor is best for primary care?

A primary care specialist is someone with training in various medical specialties who is adept at providing health maintenance services, treating acute and chronic conditions, and, when necessary, referring to specialized care providers, such as those who work in palliative medicine, sleep medicine, rehabilitation medicine, and more. Family practices may be the best type for people looking for patient care for the entire family. If someone requires continuous care for multiple health conditions, an internal medicine provider may be better suited to provide medical care.

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