Dr. Karl Nadolsky, DO
Not yet claimedEndocrinologist, Diabetes doctor, Weight loss doctor · Physician (DO)
Holland, MI
Endocrinologist and obesity medicine specialist who trained at Naval Medical Center Portsmouth and Walter Reed, chairs the AACE Comprehensive Obesity Management Algorithm, and practices at the Endocrine Clinic at the Gym in Holland, Michigan.
About Dr. Karl Nadolsky, DO
Updated Sep 20, 2026 · next review Dec 19, 2026Dr. Karl Nadolsky is an osteopathic physician (DO) who specializes in hormone conditions (endocrinology), diabetes, and obesity medicine. He practices at the Endocrine & Diabetes Clinic at the Gym at 650 S. Waverly Rd., Suite 100 in Holland, Michigan, and is listed on Holland Hospital's find-a-doctor page. (https://www.hollandhospital.org/find-a-doctor/karl-nadolsky-do)
He earned his medical degree at Nova Southeastern University College of Osteopathic Medicine in 2008, completed internal medicine residency at Portsmouth Naval Hospital, and finished an endocrinology fellowship at Walter Reed National Military Medical Center. He is a diplomate of the American Board of Obesity Medicine, and his LinkedIn also lists internal medicine board certification. Before leaving the U.S. Navy, he developed and directed a Diabetes, Obesity & Metabolic Institute and taught endocrinology fellows at Walter Reed. (https://www.abom.org/karl-nadolsky/, https://www.doximity.com/pub/karl-nadolsky-do)
He was first author and Task Force Chair of the 2025 AACE consensus statement on evaluating and treating adults with obesity/adiposity-based chronic disease, and he co-authored an AACE panel statement on weight stigma and bias. He also speaks publicly about diabetes and obesity care, including a hospital-affiliated clinic segment on local TV and the "Docs Who Lift" podcast he co-hosts. (https://pubmed.ncbi.nlm.nih.gov/40956256/, https://doctorsonsocialmedia.com/karl-nadolsky-do-face-dabom/)
Federal Open Payments records list $24,142.03 in industry payments to him across 478 records from 2021 to 2025, with the largest amounts from Corcept Therapeutics, Sanofi-Aventis U.S., and Novo Nordisk. Payments from drug and device companies are common and legal, and are reported publicly by Medicare. (https://openpaymentsdata.cms.gov/)
- Obesity medicine board certification
- He is a diplomate of the American Board of Obesity Medicine, in addition to his endocrinology training. abom.org
- Chaired national obesity guideline
- He was first author and Task Force Chair of the 2025 AACE consensus statement and algorithm for treating adults with obesity/adiposity-based chronic disease. pubmed.ncbi.nlm.nih.gov
- Military endocrinology training
- He completed internal medicine residency at Portsmouth Naval Hospital and an endocrinology fellowship at Walter Reed National Military Medical Center. doximity.com
- Teaching role
- The American Board of Obesity Medicine profile lists him as a clinical assistant professor of medicine at Michigan State University. abom.org
- Clinic built around exercise
- He practices at the Endocrine & Diabetes Clinic at the Gym in Holland, Michigan, and has published on adding a gym facility to a lifestyle medicine practice for patients with diabetes. health.usnews.com
- Work on weight stigma
- He co-authored an AACE consensus panel statement on stigma and bias in obesity care, representing the Academy of Nutrition and Dietetics on that panel according to his LinkedIn. linkedin.com
- Hospital affiliations
- He is listed with hospital affiliations at Corewell Health Grand Rapids Hospitals (Blodgett and Butterworth). health.usnews.com
- Navy service awards
- Listed awards include the Navy and Marine Corps Commendation Medal (2012) and the Navy and Marine Corps Achievement Medal (2011). health.usnews.com
- Public podcast work
- He co-hosts the "Docs Who Lift" podcast and appeared on the AACE podcast as chair of the 2025 obesity algorithm. pro.aace.com
- Industry payments reported
- Open Payments records show $24,142.03 across 478 records from 2021 to 2025, with top payers including Corcept Therapeutics, Sanofi-Aventis U.S., and Novo Nordisk. openpaymentsdata.cms.gov
Worth knowing
- He has a brother, Spencer Nadolsky, DO, who is also a physician who works in obesity medicine and has a large online following. Online posts or articles about "Dr. Nadolsky" may refer to either brother. doctorsonsocialmedia.com
Industry payments (CMS Open Payments)
Open the CMS recordFederal law requires drug and device companies to report what they pay clinicians: meals, travel, speaking, consulting, and research. Payments are common and legal; the point is that you can see them.
2021 to 2025
$24,142
478 payments
| 2021 | $2,016 |
| 2022 | $2,435 |
| 2023 | $2,104 |
| 2024 | $2,122 |
| 2025 | $15,466 |
Top payers
- Corcept Therapeutics$7,889
- SANOFI-AVENTIS U.S. LLC$5,724
- Novo Nordisk Inc$3,252
- Amryt Pharma Holdings Ltd$1,812
- Boehringer Ingelheim Pharmaceuticals, Inc.$892
Payment types
- Food and Beverage$9,161
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$8,101
- Honoraria$5,020
- Consulting Fee$1,758
- Travel and Lodging$51
A word of caution about these numbers
A payment does not mean your doctor is compromised or acting unethically. Most of these entries are drug samples left for patients, or lunch brought in for the office staff, and the amounts are usually small. Research funding and speaking at medical meetings are also normal parts of a clinical career.
As a rough guide, a total under $15,000 a year is usually not a concern. Much larger sums, especially from one company whose product your doctor recommends to you, are worth asking about. You are allowed to ask.
Sources: hollandhospital.org · abom.org · doximity.com · healthgrades.com · health.usnews.com · pubmed.ncbi.nlm.nih.gov · sciencedirect.com · pro.aace.com. Something wrong or out of date? Tell us and we will correct it.
Summary prepared with AI assistance from the public sources linked above, reviewed every three months. It is not a review, a rating, or an endorsement.
Practice location
Endocrine Clinic at the Gym (Diabetes and Endocrinology Clinic at the Gym)
650 S Waverly Road, Suite 100
Holland, MI 49423
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