Dr. Mark B. Landon is a veteran OB-GYN and department chair at The Ohio State University Wexner Medical Center. He specializes in high-risk pregnancies, diabetes in pregnancy, and VBAC delivery management.
His training includes an MD from Weill Cornell and MFM fellowship at the University of Pennsylvania. He led landmark NEJM studies on gestational diabetes and VBAC. He is also the lead editor of ‘Gabbe’s Obstetrics,’ the textbook used to train OB-GYN residents nationally. In 2025, DOJ documents revealed he received $75,000 per year from Jeffrey Epstein’s firm in the early 2000s. Ohio State launched an investigation.
This review covers Dr. Landon’s credentials, specialties, research record, patient reviews, and the Epstein controversy. Here’s what you need to know before choosing him as your provider.
Who Is Dr. Mark Landon, MD?
Dr. Mark B. Landon is a nationally recognized obstetrician-gynecologist and the Richard L. Meiling Professor and Chair of Obstetrics and Gynecology at The Ohio State University. He is the lead editor of ‘Gabbe’s Obstetrics: Normal and Problem Pregnancies,’ now in its 8th edition. That’s the textbook most OB-GYN residents in the United States study from.
Here’s the thing: 46 years of clinical experience is a long track record. Dr. Landon has been a Castle Connolly Top Doctor since 2010. He’s served as a NICHD Maternal Fetal Medicine Networks investigator for over 27 years. His research has genuinely shaped how OB-GYNs practice across the country.
In 2025, DOJ document releases placed Dr. Landon’s name in the Epstein files. He received payments of $75,000 per year in the early 2000s from Epstein’s firm. Ohio State University launched a formal investigation. Dr. Landon denied knowledge of criminal activity and described the role as biotech investment consulting.
What Are Dr. Landon’s Qualifications and Training?
Dr. Landon earned his MD from Weill Cornell Medical College in 1980 and completed both residency and fellowship training at the Hospital of the University of Pennsylvania. His fellowship focused specifically on Maternal-Fetal Medicine.
He joined the Ohio State University faculty in 1987. By 2010, he held the Richard L. Meiling Chair and the full professorship in Obstetrics and Gynecology. He’s board certified in both Obstetrics & Gynecology and Maternal-Fetal Medicine. That’s dual certification in his primary specialty areas.
He also earned a Bachelor of Arts from the University of Pennsylvania before medical school. In fact, his undergraduate and medical training both came from top-tier institutions. This foundation underpins his standing as one of the most credentialed OB-GYNs in Ohio.
What Is Dr. Landon’s Current Role at Ohio State?
Dr. Landon currently serves as Chair of the Department of Obstetrics and Gynecology at The Ohio State University Wexner Medical Center. He also practices clinically as an attending physician at the same institution.
He oversees one of the largest OB-GYN departments in the United States. To be clear, his clinical focus remains on high-risk pregnancies, diabetes in pregnancy, and VBAC management. The department trains residents whose education draws directly from his own textbook.
Dr. Landon’s consulting relationships are publicly disclosed by OSU annually. As of November 3, 2025, he reported no active relationships with pharmaceutical or medical device companies. His academic and clinical roles remain intact pending the ongoing Epstein-related investigation.
What Does Dr. Mark Landon Specialize In?
Dr. Mark Landon specializes in Maternal-Fetal Medicine, with a primary focus on high-risk pregnancies and diabetes in pregnancy. He also holds recognized expertise in VBAC delivery management. These three areas define the core of his clinical practice at OSU.
His 12 documented areas of clinical expertise include general obstetrics, general gynecology, fetal surgery, maternal-fetal medicine, and high-risk pregnancy. This range makes him a comprehensive specialist rather than a single-condition clinician. Most MFM physicians focus narrower. Dr. Landon’s scope is broader.
Bottom line: Dr. Landon built Ohio State’s Diabetes in Pregnancy Program into one of the largest in the United States. The program serves patients with gestational diabetes, Type 1 diabetes, and Type 2 diabetes during pregnancy. Each group requires closely monitored prenatal care with specialized intervention protocols.
Does Dr. Landon Treat High-Risk Pregnancies?
Yes. Dr. Landon treats high-risk pregnancies as his primary clinical focus, with experience spanning fetal surgery and complex maternal complications. He’s affiliated with Nationwide Children’s Hospital and Ohio State’s James Cancer Hospital. Access to both institutions expands care options significantly.
High-risk pregnancy management requires specialist-level MFM training. Dr. Landon completed a dedicated fellowship at the Hospital of the University of Pennsylvania. His clinical protocol covers monitoring, intervention planning, and delivery management for complicated pregnancies from first trimester through delivery.
Patients with preeclampsia, VBAC planning, pregestational diabetes, or fetal anomalies are typical referrals to his practice. OSU Wexner Medical Center ranks nationally in 10 specialties by U.S. News & World Report. That ranking supports access to multi-disciplinary care resources his high-risk patients often need.
Does Dr. Landon Handle Diabetes in Pregnancy?
Yes. Dr. Landon is one of the foremost authorities on diabetes in pregnancy in the United States, having led the largest gestational diabetes treatment trial ever conducted in the country. His OSU program is among the most established nationally.
The NICHD-funded gestational diabetes trial he led produced results published as first-author research in the New England Journal of Medicine. And here is the kicker: this study directly shaped the clinical guidelines OB-GYNs use today to treat gestational diabetes. It’s not an exaggeration to say his research changed standard of care.
Recent publications from his team continue examining postpartum outcomes. A 2026 study co-authored by Dr. Landon examined glycemic targets and postpartum depressive symptoms among individuals with pregestational diabetes. His research output on this condition remains active across multiple journals.
What Research Has Dr. Mark Landon Published?
Dr. Landon has published more than 275 articles and book chapters across peer-reviewed medical literature, with landmark studies appearing in the New England Journal of Medicine. He led two of the largest prospective studies ever conducted in obstetrics.
His body of research spans gestational diabetes management, VBAC safety and outcomes, postpartum cardiovascular risk, and neonatal outcomes. Recent publications extend to secondary analyses of clinical trials, including the MOMPOD trial on basal insulin types and neonatal outcomes, presented at SMFM 2025.
And it gets better: Dr. Landon serves as lead editor of ‘Gabbe’s Obstetrics: Normal and Problem Pregnancies,’ now in its 8th edition. This textbook is the standard reference used to train OB-GYN residents throughout the United States and internationally. Writing a landmark textbook AND publishing over 275 peer-reviewed works is a rare combination.
Has Dr. Landon Published in Major Medical Journals?
Yes. Dr. Landon has published as first author in the New England Journal of Medicine, one of the most selective and high-impact medical journals in the world. Both NEJM papers were principal investigator studies on VBAC and gestational diabetes.
His NEJM gestational diabetes treatment trial is cited as the largest of its kind conducted in the United States. The VBAC study was the largest prospective investigation of its subject ever completed. Both publications directly informed the obstetric guidelines clinicians reference today.
Additional publications appear in journals including Current Medical Science, Primary Care Diabetes, and Pregnancy Hypertension. Active 2026 publications show continued research productivity. His PubMed profile indexes over 275 works across his career spanning four decades.
What Are Dr. Landon’s Most Cited Studies?
Dr. Landon’s two most cited works are the NICHD VBAC trial and the gestational diabetes treatment trial, both published first-author in the New England Journal of Medicine. These studies define current standard-of-care protocols in obstetrics.
The VBAC trial enrolled the largest cohort ever studied for trial-of-labor decisions after prior cesarean delivery. Its findings counsel patients on birth planning options. The gestational diabetes trial defined treatment thresholds still referenced in American College of Obstetricians and Gynecologists (ACOG) guidelines.
More recent high-impact work includes a 2026 study on ASCVD biomarkers 5 to 10 years after hypertensive disorders of pregnancy. This extends Dr. Landon’s research scope into long-term maternal cardiovascular outcomes. The breadth of impact here is genuinely significant.
Key Research Areas:
- Gestational diabetes treatment and outcomes
- Vaginal birth after cesarean (VBAC) safety
- Postpartum cardiovascular risk
- Neonatal outcomes from maternal diabetes
- Fetal sex and maternal diabetes risk
What Do Patient Reviews Say About Dr. Mark Landon?
Patient reviews of Dr. Mark Landon reflect high overall satisfaction, with strong marks for expertise in managing high-risk pregnancies. Patients consistently reference his knowledge and experience as primary reasons for choosing his care. That’s a consistent signal across multiple review platforms.
His Healthgrades profile shows patient satisfaction metrics across multiple clinical categories. Patients highlight clear communication about pregnancy risks and birth options, especially VBAC counseling. His staff at Ohio State Outpatient Care Upper Arlington also receives positive mentions in patient feedback.
Negative reviews are less frequent. They reference appointment scheduling difficulty and limited direct access. As a department chair at a major academic medical center, Dr. Landon’s availability is constrained. His OSU profile notes appointments cannot always be scheduled directly with his office.
Are Patients Likely to Recommend Dr. Landon?
Yes. Dr. Landon’s likelihood-to-recommend score on Healthgrades trends above average for OB-GYN specialists in Ohio, driven by his clinical expertise and thoroughness in explaining complex diagnoses.
Patients managing gestational diabetes or planning VBAC deliveries report high confidence in his guidance. His direct communication style and willingness to answer detailed questions about pregnancy complications appear frequently in positive reviews. That pattern matters when you’re navigating a high-risk pregnancy.
His affiliations with Nationwide Children’s Hospital and OSU Wexner Medical Center provide access to a full specialist network. This integration into a major academic health system strengthens the care continuity patients cite in their reviews. You’re not just seeing one doctor. You’re accessing a system.
What Are Common Patient Complaints?
The most common complaint about Dr. Mark Landon centers on appointment access, with some patients noting that scheduling a first visit can take weeks at his OSU-affiliated practice. His department chair role limits direct availability.
OSU’s practice page confirms that appointments cannot always be scheduled directly with Dr. Landon. Patients requiring urgent consultations may be directed to other MFM specialists within Wexner Medical Center. This access constraint is common among physician-researchers at large academic centers.
A smaller subset of reviews mentions wait times at the Ohio State Outpatient Care Upper Arlington location. No reviews on major platforms reference clinical errors or adverse outcomes. The overall complaint profile reflects administrative friction rather than clinical dissatisfaction.
What Controversies Surround Dr. Mark Landon?
Dr. Landon faced significant public scrutiny in 2025 after DOJ document releases placed his name among individuals who received payments from Jeffrey Epstein’s firm. Internal Epstein emails formalized quarterly payments of $30,000, totaling $75,000 per year in the early 2000s.
The release drew national media coverage including NBC News reporting. Critics noted that Dr. Landon chairs the OB-GYN department at OSU Wexner Medical Center, an institution historically tied to Les Wexner, Epstein’s longtime associate. This overlap amplified public scrutiny beyond what financial ties alone might have generated.
Dr. Landon issued a public statement denying knowledge of criminal activity. He identified himself as a paid biotech investment consultant for Epstein’s New York Strategy Group from 2001 to 2005. He called Epstein’s crimes ‘reprehensible’ and expressed sympathy for victims.
Did Dr. Landon Receive Payments From Jeffrey Epstein?
Yes. Documents released by the U.S. Department of Justice in 2025 confirmed that Dr. Landon received $75,000 per year from Epstein’s firm, with quarterly payments of $30,000 documented in internal emails between Epstein and his attorney.
The internal communications reference a formal agreement with Dr. Landon. The emails do not specify the exact scope of services rendered. Dr. Landon’s own account describes his role as a consultant evaluating potential biotech investments. No legal charges have been filed against Dr. Landon as of 2026.
The payments occurred from 2001 to 2005, prior to Epstein’s 2008 conviction on prostitution-related charges. Dr. Landon’s consulting arrangement is framed in publicly available documents as a professional advisory role. OSU launched a formal institutional investigation into the matter in 2025.
What Did Ohio State’s Investigation Find?
As of early 2026, Ohio State University’s investigation into Dr. Landon’s Epstein financial ties has not produced a public finding of misconduct, and Dr. Landon remains in his role as department chair.
OSU’s official disclosures as of November 3, 2025 show Dr. Landon reported no active consulting relationships with outside companies. The university has not issued a formal statement of discipline or suspension. His OSU faculty and clinical positions remain active.
The investigation status parallels broader national scrutiny of Epstein-connected professionals across academia and medicine. Ohio State faces additional scrutiny due to institutional ties to Les Wexner. No findings of criminal conduct by Dr. Landon have been made public as of this writing.
Is Dr. Mark Landon Board Certified and Credentialed?
Yes. Dr. Landon holds active board certifications in both Obstetrics & Gynecology and Maternal-Fetal Medicine, awarded by the American Board of Obstetrics and Gynecology. He has served as a board examiner for the same organization. That’s a credential reserved for recognized field leaders.
His credentials include a medical license in Ohio, 46 years of clinical practice, and dual board certifications covering both primary specialty areas. He earned Castle Connolly Top Doctor status starting in 2010. He’s also affiliated with a Castle Connolly Top Hospital.
Board Certifications:
- Obstetrics & Gynecology
- Maternal-Fetal Medicine
No board actions or disciplinary findings appear in publicly available records against Dr. Landon. Healthgrades’ Board Action Check shows no flagged issues. His medical license remains active and in good standing in the state of Ohio.
What Hospitals Is Dr. Landon Affiliated With?
Dr. Landon holds active hospital affiliations at Ohio State University Wexner Medical Center, Nationwide Children’s Hospital, and James Cancer Hospital and Solove Research Institute. These affiliations allow him to admit and treat patients at each facility.
Hospital Affiliations:
- Ohio State University Wexner Medical Center
- Nationwide Children’s Hospital
- James Cancer Hospital and Solove Research Institute
OSU Wexner Medical Center is nationally ranked in 10 specialties by U.S. News & World Report. This ranking provides Dr. Landon’s patients access to cross-specialty consultations and advanced procedural capabilities. For high-risk pregnancies, that breadth of resources matters.
Should You Trust Eat Proteins for Medical Expert Reviews?
Our team at Eat Proteins evaluates physician profiles using credentialing data, peer-reviewed research output, patient satisfaction metrics, and publicly reported controversies. We present complete profiles, not polished marketing bios.
Dr. Mark Landon’s profile reflects a clinician with exceptional academic credentials and genuine research impact. His gestational diabetes and VBAC studies changed how OB-GYNs practice across the United States. The Epstein payment controversy is documented and unresolved. Both facts are relevant to an informed patient decision.
You deserve accurate information about your providers. So does every patient navigating a high-risk pregnancy. Eat Proteins delivers the full picture, without spin. And that’s exactly what our experts are here to do.