Dr. Mark Arnold Welch, DO

Dr. Welch practices at Loma Linda University Medical Center in Loma Linda, California, part of Seventh-day Adventist Church.

Dr. Welch's NPI, 1225063555, was assigned on July 12, 2006. Dr. Welch graduated from WesternU College of Osteopathic Medicine of the Pacific in 2003. Dr. Welch holds California license 2OA8950.

Dr. Welch's primary practice is Loma Linda University Medical Center, at 11234 Anderson St, Loma Linda, CA 92354 in San Bernardino County. The practice phone is (909) 558-4000.

Dr. Welch's primary practice is Loma Linda University Medical Center in Loma Linda, California, part of Seventh-day Adventist Church. Dr. Welch is also affiliated with Riverside University Health System - Medical Center. The medical group on file is Loma Linda University Faculty Medical Group (LLUFMG). Dmand AI also links Dr. Welch to 1 more physician office and 1 group practice or clinic, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Welch practices, 4 sites in all. Vendor and product names are available with a free account.

Psychiatry is Dr. Welch's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Welch is board certified in psychiatry by the American Board of Psychiatry and Neurology. Dr. Welch is licensed in California.

Dmand AI lists anxiety, depression, insomnia and schizophrenia among the conditions Dr. Welch treats.

CMS data shows 474 Medicare services from Dr. Welch across 6 procedure codes in 2024, for 334 Medicare patients. Medicare paid $37,950 for them.

CMS counts 334 Medicare patients who saw Dr. Welch in 2024. The largest group is 65 to 74, with 144 patients. 75% of them have high blood pressure, and 73% have high cholesterol. 40% are also on Medicaid. Their average risk score is 1.71, 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. Welch's median patient age at 48, with 54% women.

In 2024, Dr. Welch wrote 890 Medicare Part D claims for 93 patients. 93% of them were for generic drugs. CMS names the drug for 713 of them, across 19 drugs with 11 or more claims each, at $25,327 in total drug cost. In 2023, CMS named 676 claims across 21 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Welch for performance year 2024, reported as part of a group. Dr. Welch accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Welch as offering telehealth.

Dmand AI links 2 papers to Dr. Welch in 2020. Dr. Welch's most frequent co-authors are Ramiz Fargo, MD, Mariam M. Ischander, MD and Kanwaljeet K. Maken, MD.

CMS Open Payments shows 43 general payments to Dr. Welch from 12 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $349.

Dr. Welch graduated from WesternU College of Osteopathic Medicine of the Pacific in 2003. Dr. Welch is a member of AOA and APA.

Dr. Welch is in network with 8 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.