Winter 2018

17501 East 17th Street, Suite 100, Tustin, CA 92780


(714) 505-9000


Since 1968, HMWC CPAs & Business Advisors has specialized in serving the financial and tax needs of privately-held businesses and their owners throughout Southern California.  The depth and breadth of our experience - which includes such ancillary services as business consulting, business valuation, employee benefits and human resources services, estate planning and technology consulting - makes us a valuable member of our clients' management team.

At HMWC, we are more than accountants, we are trusted business advisors.

For more information, please contact our professionals:


Steve Williams is HMWC's Managing Partner and Healthcare Practice Leader. He has worked extensively with physicians and other high-income tax payers for over 25 years. He specializes in consulting services to medical practices as well as tax and financial planning.


Jay Wikum is a partner in HMWC's Healthcare Services department and brings over 25 years of accounting experience, including over 20 years in medical practice finance and administration.



Art Wiederman is a partner as a dental CPA. Art has over 30 years of experience as an expert in dental practice accounting & financial management. Art is also a regular lecturer at state and national dental conferences.


Pam Chamberlain is a partner in dental specific accounting. She has nearly 30 years of experience in her industry. She specializes in dental accounting, tax compliance and planning, financial & retirement planning.


Mr. Watson is a senior manager in HMWC's Healthcare Services department and brings over 25 years of experience with an emphasis in taxation, business consulting, and tax planning. 

Firm News: Wiederman & Chamberlain, Leading CPA Firm Specializing in Dentists Merges with HMWC CPAs & Business Advisors

According to Steve Williams, HMWC’s managing partner, “Adding the exceptional professionals at Wiederman & Chamberlain is a strategic addition to our Healthcare Services department. Healthcare is one of HMWC’s largest industries served and the addition of Art, Pam and their entire staff will play a very significant role in our continuing growth and services to the entire spectrum of medical and healthcare practices in California.”

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Quality vs. volume — How should physician compensation be determined?

Increasingly, hospitals, health systems and the federal government are pushing for “pay for quality” or “pay per performance” over the more traditional “pay for volume” as the underlying structure for physician compensation. This article offers some examples of hospitals that have switched the payment emphasis to the quality model. It also discusses some of the assumptions on which these models are based. The ongoing issue is that benchmarks for quality aren’t well documented — and are often fuzzy at best. A sidebar displays one of the most influential lists of quality measures in health care, which was developed by the National Academy of Medicine.

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Surviving — and thriving — in a changing practice landscape

Health care reform and declining reimbursements in many specialties have created increasing stress and uncertainty for physicians in private practice, often leading them to shift to hospital or medical practice employment. This article offers physicians some tips for navigating the current complex medical world, whether in private practice or employed. The article stresses the need for physicians to educate themselves about the options to ensure their practices thrive and grow.

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Steps to take to improve claim acceptance

A medical practice’s financial health and stability greatly depends on having claims accepted. Claim denials are avoidable errors that disrupt the billing process. This article discusses how to ensure that claims are accepted on first submission, noting that this requires taking specific steps early in the revenue cycle. In addition to offering suggestions on how to respond to any claim denials that arise, the article points out that the best tactic is to make any necessary systemic changes to the billing process to prevent denials from happening in the first place.

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How to handle a Medicare audit

Generally speaking, the question isn’t if you get a Medicare audit, it’s when. It’s important for physicians and medical practices to understand how a Medicare audit works, so that they can handle one successfully. This article explains the two types of Medicare audits and offers some strategies for dealing with them, including reading the audit letter carefully, submitting a copy of the complete record, and ensuring all medical records and copies are legible. The article adds that the key is to stay cool, document everything — and consult with an attorney and financial expert.

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