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Goal: a second site that extends your economics instead of dividing your attention.

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The threshold question: same entity or new one?

Same PC: same TIN, same contracts, payers need a location add rather than re-credentialing. Much faster, but not instant. New entity: full separation, and worth reading Scaling beyond one practice first, because converting structures later costs more than starting right. Multi-state is always a structure conversation (entity guide, MSO-PC Wiki).

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The enrollment work either way

Add the location to every payer’s contract and credentialing record. Update NPPES. Medicare via PECOS (855B change of information). Floating clinicians need both locations on their records with each payer. Start 90 days out and run test claims from the new address early. An out-of-network month at a new site is an expensive lesson in payer processing times.

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Banking and money flow

Same entity: one operating account can serve both sites, but make deposits attributable by location (reconciliation gets harder when two sites pool). Separate entities: full per-entity separation, no shortcuts (banking structure). Give the new site’s paper a home: extend the lockbox rather than starting a second mail pile.

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The economics, honestly

Site two is not 2x site one. It carries full fixed costs immediately, ramps on the same credentialing-constrained curve as a de novo, and adds a coordination tax: you can’t be in two places, so site two runs on associates, written protocols, a real manager, and controls that don’t depend on your eyes. Every specialty’s operator community agrees: one to two is the hardest jump in the scaling curve, because it’s where owner-operator habits break. Budget a 6 to 12 month ramp and management time as a real cost. If it works, site three makes you a group. Next read: Scaling beyond one practice.