AM
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Marquardt, Rheumatologist in Ann Arbor, MI?
Dr. April Marquardt, MD is a Rheumatologist, who primarily practices in Ann Arbor, MI with 2 additional practice locations. She is board certified. Dr. Marquardt completed her residency at Ohio State University and is currently affiliated with University Hospital. Dr. Marquardt is fluent in English, and is currently seeing new patients. Dr. Marquardt’s practice accepts Medicaid, Medicare, Aetna, Cigna, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Marquardt’s office at (734) 593-5990.
What are Areas of Expertise for Dr. Marquardt?
Dr. April Marquardt, MD is a highly-rated, board-certified Rheumatologist known for expertly diagnosing, treating, and managing a wide array of related conditions and procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Marquardt empowers patients to confidently navigate their health journey, specializing in Arthritis, Autoimmune Disease, Lupus/SLE, and comprehensive wellness support. Serving the Ann Arbor, MI community, Dr. Marquardt is dedicated to enhancing lives through expert, patient-centered care.
Where did Dr. Marquardt go to medical school and complete their residency?
Residency: Ohio State University
Medical School: Ohio State University College of Medicine And Public Health,Columbus, Ohio, United States
Is Dr. Marquardt board certified as a Rheumatologist?
Yes, Dr. April Marquardt, MD is board certified by the American Board of Internal Medicine
What languages does Dr. Marquardt speak?
Dr. Marquardt and their clinical team can communicate with patients in the following languages:
English
What conditions does a Rheumatologist like Dr. Marquardt typically treat?
As a Rheumatologist, Dr. Marquardt diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Marquardt. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology.
Also known as:
- Rheumatoid Arthritis
- RA
- Chronic inflammatory arthritis
- Autoimmune arthritis
- Inflammatory joint disease
ICD-10 Codes:
- M0579: Rheumatoid arthritis with rheumatoid factor of multiple sites without organ or systems involvement
- M0609: Rheumatoid arthritis without rheumatoid factor, multiple sites
Also known as:
- Iridocyclitis
- Widespread eye inflammation
- Eye Disease
- Inflammation of the iris and ciliary body
- Anterior uveitis
- Iritis and cyclitis
- Total uveal inflammation
- Inflammation of all eye layers
- Eye inflammation
ICD-10 Codes:
- H209: Unspecified iridocyclitis
- H44113: Panuveitis, bilateral
Also known as:
- Therapeutic Drug Monitoring
- Drug level testing
- Medication monitoring
- Therapeutic drug management
ICD-10 Codes:
- Z5181: Encounter for therapeutic drug level monitoring
Also known as:
- Other Retina and Choroid Inflammation
- Retinal Disorder
- Chorioretinitis
- Ocular Inflammation
- Retina Inflammation
ICD-10 Codes:
- H30893: Other chorioretinal inflammations, bilateral
Also known as:
- Retinal Vasculitis
- Retinal Disorder
- Inflammation of Retinal Blood Vessels
- Eye Vasculitis
- Retinal Vessel Inflammation
ICD-10 Codes:
- H35063: Retinal vasculitis, bilateral
What procedures does a Rheumatologist like Dr. Marquardt typically perform?
As a Rheumatologist, Dr. Marquardt performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. Marquardt. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology.
Also known as:
- Pulse Oximetry
- Oxygen Saturation Test
- Oximeter Reading
- Blood Oxygen Level Test
CPT Codes:
- 94760: Noninvasive ear or pulse oximetry for oxygen saturation; single determination
Does Dr. Marquardt accept my insurance?
Dr. Marquardt accepts most major insurance plans. Important: Please call our office at (734) 593-5990 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Marquardt accept in Ann Arbor, MI?
Dr. Marquardt in Ann Arbor, MI accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
Blue Cross Blue Shield of Michigan
CVS Health (formerly Aetna)
Henry Ford Health System
Humana
McLaren Health Care
Medicare
Molina Healthcare
Spectrum / Priority Health
UnitedHealth Group
Unknown
View All Insurances
Where is Dr. Marquardt's office located?
What is Dr. Marquardt's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Marquardt's National Provider Identifier (NPI) number is 1235352311.
What common questions do patients ask about Dr. Marquardt?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Marquardt
What is Dr. April Marquardt's specialty?
Dr. Marquardt is a Rheumatologist near Ann Arbor, MI.
What does a Rheumatologist do?
An internist specializing in the treatment of diseases affecting the joints, muscles, bones, and tendons. This specialist diagnoses and manages conditions such as arthritis, back pain, muscle strains, common sports injuries, and collagen-related diseases.
Is this Dr. April Marquardt affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Marquardt is affiliated with Trinity Health Ann Arbor Hospital which is a Castle Connolly Top Hospital. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
When to see a Rheumatologist?: Guides for symptoms, conditions, and treatments
Understand your symptoms and know when it’s time to see a Rheumatologist. Explore insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is April Marquardt accepting new patients in Ann Arbor, MI?
Yes, Dr. April Marquardt is accepting new patients at this time.
Does Dr. April Marquardt offer online booking?
Please contact Dr. Marquardt's office at (734) 593-5990 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with April Marquardt?
Please contact Dr. Marquardt's office at (734) 593-5990 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. April Marquardt have?
Dr. April Marquardt is certified by the American Board of Internal Medicine.
Other Rheumatologist Near Ann Arbor, MI

Pediatric Rheumatologist
Dr. Erin Janssen, MD is a Pediatric Rheumatologist, who primarily practices in Ann Arbor, MI. She is board certified.
Ann Arbor, MI
MG
Rheumatologist
Dr. Martin Garber, DO is a Rheumatologist, who primarily practices in Ann Arbor, MI with 2 additional practice locations. He has been practicing for over 33 years.
Ann Arbor, MI
Rheumatologist
Dr. Ryan Massay, MD is a Rheumatologist, who primarily practices in Ann Arbor, MI with 1 additional practice location.
Ann Arbor, MI