Mohs surgery clinicians in Newport Beach, California

CMS lists 43 clinicians with a primary specialty of dermatology, micrographic dermatologic surgery, plastic and reconstructive surgery, otolaryngology, ophthalmology, general surgery, hand surgery, or surgical oncology who have billed Medicare for at least one removal of skin cancer procedure and practice in Newport Beach, California (details below).

Mohs surgery volume

Clinician	Removal of skin cancer procedures billed	Percentile rank
Andrew Breithaupt, MD	2,832	99%
Ronald Shiell, MD	2,753	99%
Adam Rotunda, MD	1,930	98%
Dennis Nguyen, MD	1,353	93%
Dina Bierman, MD	1,009	86%
John Siebenlist, MD	874	81%
Jeffrey Lander, MD	863	81%
Soheil Simzar, MD	705	73%
Adam Aronson, MD	655	70%
Hung Ong, MD	582	65%
Merrick Brodsky, MD	442	55%
Edward Rohaly, MD	436	55%
Ann Vu, MD	391	51%
Julie Gladsjo, MD	374	49%
Michael Kassardjian, DO	334	45%
Jennifer Ledon, MD	278	40%
Jonathan Baron, MD	266	39%
Payam Abrishami, MD	244	37%
Lynn Dimino, MD	222	34%
Joannie Sun, MD	209	33%
Kevin Belasco, DO	183	30%
Larisa Lehmer, MD	178	29%
Michelle Aszterbaum, MD	172	29%
Bobak Hedayati, MD	164	28%
Margaret Shannon, MD	157	28%
Kiyanna Williams, MD	153	27%
Robin Lewallen, MD	120	22%
Anh Dao Le, MD	119	22%
Donna Tran, DO	104	20%
Jacqueline Levin, DO	92	19%
Calvin Sung, MD	92	19%
Lisa Bukaty, MD	86	18%
Christopher Wong, DO	82	18%
Melissa Watcher, MD	70	16%
Zenovia Gabriel, MD	58	15%
Amy Reinstadler, MD	27	10%
Susan Cox, MD	23	10%
Leela Athalye, DO	1-10	8% or below
Arta Farshidi, MD	1-10	8% or below
Anne Marie McNeill, MD	1-10	8% or below
Neda Mehr, MD	1-10	8% or below
Christina Ring, MD	1-10	8% or below
James Rosing, MD	1-10	8% or below

Sorted by the number of removal of skin cancer procedures billed to Medicare, highest first, not by quality or skill. CMS suppresses counts between 1 and 10 to protect patient privacy and publishes the range instead.

Understanding CMS Data

CMS's "Removal of skin cancer" category combines specific billing codes for Mohs micrographic surgery to calculate the number of times each clinician billed Medicare for "Removal of skin cancer." In Mohs surgery, the clinician removes a skin cancer in stages and examines each stage under a microscope during the same visit. CMS counts each billing code separately, so a single skin cancer that takes more than one stage can contribute more than once to this total. CMS reports removal of a skin cancer by standard excision, without microscopic examination during the visit, in a different category, so this total does not include it. CMS reports only procedures that clinicians billed to Original Medicare and Medicare Advantage. Therefore, CMS's procedure volume data does not include procedures that clinicians may have performed on patients who have other health care coverage (e.g., commercial insurance, self-pay, or the VA). Billing variation and coding errors can also affect CMS's data. Therefore, the number of procedures that CMS reports for a clinician may be higher or lower than the actual number of removal of skin cancer procedures a clinician performed during the reporting period. Lastly, only clinicians with a primary specialty of dermatology, micrographic dermatologic surgery, plastic and reconstructive surgery, otolaryngology, ophthalmology, general surgery, hand surgery, or surgical oncology (as reported to Medicare) are presented.

Source: Centers for Medicare & Medicaid Services (October 2, 2026 release).