Dr. Mary Ann Nau Johnson, MD

Dr. Johnson practices at Mercy Medical Group, A Service Of Dignity Health Medical Foundation in El Dorado Hills, California.

Dr. Johnson's NPI, 1508177163, was assigned on June 29, 2010. Dr. Johnson graduated from Florida State University College Of Medicine in 2009. Dr. Johnson's California license number on file is A113258.

Dr. Johnson's primary practice is Mercy Medical Group, A Service of Dignity Health Medical Foundation, at 1264 Hawks Flight Ct Suite 100 Suite 100, El Dorado Hills, CA 95762-9354. The practice phone is (916) 939-8400.

Dr. Johnson's primary practice is Mercy Medical Group, A Service Of Dignity Health Medical Foundation in El Dorado Hills, California. Dr. Johnson is also affiliated with Dignity Health - Mercy General Hospital. The medical group on file is Mercy Medical Group.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johnson practices, 2 sites in all. Vendor and product names are available with a free account.

Dermatology is Dr. Johnson's primary specialty in the NPI Registry, under taxonomy code 207N00000X. Dr. Johnson is board certified in dermatology by the American Board of Dermatology. Dr. Johnson has a license on file in California.

Dmand AI lists acne, acute skin infection, benign or precancerous skin growths, cold sores or genital herpes, contact dermatitis, hives, itchy rashes and joint cyst among the conditions Dr. Johnson treats.

CMS data shows 4,190 Medicare services from Dr. Johnson across 20 procedure codes in 2024, for 803 Medicare patients. Medicare paid $177,357 for them. Every service was in an office.

CMS counts 803 Medicare patients who saw Dr. Johnson in 2024. The largest group is 65 to 74, with 459 patients. 75% of them have high cholesterol, and 60% have high blood pressure. 3% are also on Medicaid. Their average risk score is 0.76, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Johnson's median patient age at 60, with 64% women.

In 2024, Dr. Johnson wrote 1,542 Medicare Part D claims for 520 patients. 92% of them were for generic drugs. CMS names the drug for 1,398 of them, across 33 drugs with 11 or more claims each, at $314,167 in total drug cost. In 2023, CMS named 1,344 claims across 30 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Johnson for performance year 2024, reported through an alternative payment model (APM). Dr. Johnson accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 1,418 procedures of removal of skin lesions by Dr. Johnson, more than 96% of the clinicians it reports for that procedure.

Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)

Dmand AI links 2 papers to Dr. Johnson in 2015. Dr. Johnson's most frequent co-author is Jillian Wahmei Wong Millsop, MD.

CMS Open Payments shows 7 general payments to Dr. Johnson from 3 drug and device companies from 2018 to 2022. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $156.

Dr. Johnson graduated from Florida State University College Of Medicine in 2009.

Dr. Johnson is in network with 11 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.