Dr. Bernard M. Karnath, MD

Dr. Karnath practices at John Sealy Hospital in Galveston, Texas, part of The University of Texas System.

Dr. Karnath's NPI, 1285793760, was assigned on December 8, 2006. Dr. Karnath graduated from UTMB Health in 1994. Dr. Karnath's Texas license number on file is J9893.

Dr. Karnath's primary practice is John Sealy Hospital, at 301 University Boulevard, Galveston, TX 77555 in Galveston County. The practice phone is (409) 772-1011.

Dr. Karnath's primary practice is John Sealy Hospital in Galveston, Texas, part of The University of Texas System. The medical group on file is UTMB Faculty Group Practice.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Karnath practices. Vendor and product names are available with a free account.

Internal medicine is Dr. Karnath's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Karnath is board certified in internal medicine by the American Board of Internal Medicine. Dr. Karnath has a license on file in Texas.

Dmand AI lists acid reflux, alcohol use disorders, alzheimer's disease, anemia, anxiety, atrial fibrillation and flutter, bursitis and chronic anemia among the conditions Dr. Karnath treats.

CMS data shows 357 Medicare services from Dr. Karnath across 5 procedure codes in 2024, for 141 Medicare patients. Medicare paid $19,803 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 141 Medicare patients who saw Dr. Karnath in 2024. The largest group is 65 to 74, with 58 patients. 72% of them have high blood pressure, and 62% have high cholesterol. 13% are also on Medicaid. Their average risk score is 1.53, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Karnath's median patient age at 72, with 52% women.

In 2024, Dr. Karnath wrote 2,120 Medicare Part D claims for 192 patients. 90% of them were for generic drugs. CMS names the drug for 1,583 of them, across 45 drugs with 11 or more claims each, at $95,664 in total drug cost. In 2023, CMS named 1,431 claims across 46 drugs.

Dr. Karnath accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Dmand AI links 37 papers to Dr. Karnath, published from 2003 to 2025. 2021 was the busiest year, with 4. The most frequent topics are Clinical Competence, Physical Examination and Texas. Dr. Karnath has published most often in Cureus. Dr. Karnath's most frequent co-authors are Join Y. Luh, MD, Mark D. Holden, MD and Karen Em Szauter, MD.

CMS Open Payments shows 5 general payments to Dr. Karnath from 5 drug and device companies from 2018 to 2024. Food and beverage make up the largest share, 100% of the total. Edwards Lifesciences Corporation paid the most, $148.

Dr. Karnath graduated from UTMB Health in 1994.

Dr. Karnath is in network with 22 carriers, including Elevance, Aetna and United Healthcare. PPO plans come from the most carriers, 13. Check the plan with the practice before a visit.