Medical Practice Business Structure: PLLC vs PC vs S-Corp for Physicians
Physicians face different business formation rules than most entrepreneurs. The corporate practice of medicine (CPOM) doctrine — present in about 30 states — prohibits unlicensed individuals from owning or controlling a medical practice, which means your business entity must be structured specifically for licensed professionals. This guide explains the differences between Professional Limited Liability Companies (PLLCs), Professional Corporations (PCs), and S-Corp tax elections, and how to choose the right structure based on your state, practice model, and tax goals.
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The Quick Answer
Most solo physicians should form a PLLC (or PC if required by their state) and then make an S-Corp tax election with the IRS once the practice generates over $80,000/year in net profit. The PLLC provides liability protection; the S-Corp election reduces self-employment taxes by splitting income between a reasonable W-2 salary and pass-through distributions. In states with CPOM doctrine that require a Professional Corporation (not PLLC), form a PC with S-Corp tax election. Always consult a healthcare attorney and CPA familiar with physician practices before filing — state rules vary significantly and the wrong entity type can create licensing and payer credentialing problems.
The Corporate Practice of Medicine Doctrine
Approximately 30 states enforce the corporate practice of medicine (CPOM) doctrine, which prohibits business corporations (standard LLCs, C-corps) from employing physicians or owning medical practices. States with strict CPOM include California, Texas, New York, Illinois, and Ohio. In these states, your practice entity must be a Professional Corporation (PC) owned 100% by a licensed physician. States with more permissive rules (Florida, Nevada, Colorado) allow PLLCs for medical practices. In a MSO (Management Services Organization) model used in private equity-backed practices and telehealth companies, a separate management company provides non-clinical services to the physician PC — this is also a CPOM workaround that some solo physicians use when bringing in investor capital. Check your state medical board's corporate structure guidance and your state's business entity statutes before filing.
PLLC vs PC: Key Differences
A PLLC (Professional Limited Liability Company) is governed by your state's LLC statutes with special professional licensing requirements. It offers pass-through taxation (profits taxed on your personal return), operational flexibility, and limited liability protection for business debts. Formation costs: $100–$500 in state filing fees. A PC (Professional Corporation) is governed by corporate statutes and may require annual meetings, board resolutions, and more formal governance. PCs also pass through to your personal return with an S-Corp election. Formation costs: $100–$800 in state filing fees. PLLCs are simpler to operate; PCs are required in some states and also preferred when adding physician partners (ownership stakes in a PC are easier to structure than in an LLC). Both provide liability protection against business debts — neither eliminates personal liability for your own clinical malpractice.
S-Corp Tax Election: When and How
Once your practice nets over $80,000–$100,000/year, an S-Corp election saves significant self-employment (SE) taxes. Without an S-Corp election, a solo physician LLC owner pays 15.3% SE tax on all net profit. With an S-Corp election, you pay yourself a 'reasonable compensation' W-2 salary (typically $150,000–$250,000 for a physician, depending on specialty and regional benchmarks) and take remaining profits as pass-through distributions — which are not subject to SE tax. Example: Net profit $350,000. Without S-Corp: SE tax on $350,000 ≈ $21,000. With S-Corp, salary $180,000 (SE tax ≈ $10,500), distributions $170,000 (no SE tax) — saving $10,500/year. File IRS Form 2553 within 75 days of entity formation (or by March 15 for an existing entity) to make an S-Corp election effective for the current tax year.
Group Practice Considerations
If you're forming a group practice with 2+ physicians, the entity structure becomes more complex. A multi-physician PC with a formal shareholder agreement is common. Alternatively, a physician Partnership entity or a PLLC with a detailed operating agreement can work. Key issues to address in any group structure: income allocation (equal split vs. productivity-based), buy-in terms for new partners, buy-out valuation methodology, restrictive covenants, and death/disability provisions. Group practices are subject to the Stark Law (physician self-referral) and Anti-Kickback Statute at the federal level if they accept Medicare/Medicaid — group compensation structures must meet a Stark exception. Consult a healthcare attorney for group formation; the cost ($3,000–$8,000 for a solid agreement) is far cheaper than litigating a partnership dispute later.
Payer Credentialing and Entity Registration Timing
Your business entity must be formed before you apply for your NPI Type 2 (organizational NPI) and before submitting credentialing applications to insurance companies. Insurance payers credential the individual physician (NPI Type 1) and the group/practice entity (NPI Type 2) separately. Credentialing under the wrong entity type — for example, attempting to credential an LLC in a state where payers only contract with PCs — causes delays of 30–60 days. Get your entity formed and NPI Type 2 registered before submitting any credentialing paperwork. Timing: form entity → obtain EIN from IRS (same day online) → register NPI Type 2 at nppes.cms.hhs.gov → begin CAQH profile → begin payer-specific credentialing applications. The full credentialing cycle takes 60–150 days depending on the payer.
RECOMMENDED TOOLS
Formations
Business formation and S-Corp election service designed for self-employed professionals. Handles entity formation, S-Corp election, payroll, and quarterly tax filings in one platform.
Collective
All-in-one back-office platform for solo business owners including S-Corp formation, business banking, bookkeeping, and tax preparation. Popular with physician-entrepreneurs.
Registered Agents Inc.
Affordable registered agent service for professional entities. Required in all states for your PC or PLLC. $50–$100/year vs $250–$400 at large providers.
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FREQUENTLY ASKED QUESTIONS
Do I need a healthcare attorney to form my medical practice entity?
For a solo DPC or cash-pay practice, an online formation service plus a one-hour consultation with a healthcare attorney ($300–$500) is usually sufficient. For an insurance-accepting practice, group practice, or any practice in a strict CPOM state, a full engagement with a healthcare attorney ($2,000–$6,000 for formation documents) is strongly recommended. The Stark Law and Anti-Kickback Statute create legal exposure that generic business attorneys often miss.
Can a non-physician spouse or business partner own part of my medical practice?
In CPOM states: no. Non-licensed individuals cannot own any equity interest in a physician PC in states with strict CPOM doctrine. In non-CPOM states or more permissive jurisdictions, non-physician ownership may be allowed in a PLLC — but check your state medical board rules and payer contracts, as some insurers contractually prohibit non-physician ownership. Always get a state-specific legal opinion before bringing in a non-physician equity partner.
When should I make an S-Corp election?
Make the S-Corp election in your entity's first year if you project net income over $80,000. If your first year will be lower (common during practice startup), wait until you're consistently profitable before electing S-Corp — the payroll complexity (quarterly Form 941, W-2 preparation, FUTA/SUTA filings) adds $1,500–$3,000/year in accounting costs that only makes sense once SE tax savings exceed that threshold.