New York is one of the few states where the Medicare locality you select changes the payment estimate more than almost any other input, because the state contains five separate CMS payment localities with meaningfully different Geographic Practice Cost Index (GPCI) values. A CPT code billed in Manhattan and the same code billed in a rural upstate county can produce noticeably different Medicare-allowed amounts, even though the underlying relative value units (RVUs) for that code are identical everywhere in the country.
What GPCI Actually Adjusts
GPCI does not change a CPT code’s RVU. The Centers for Medicare & Medicaid Services (CMS) publishes a single national RVU value for each component of a code — work, practice expense, and malpractice — and that RVU is the same whether the service is performed in Manhattan or Buffalo. What changes by geography is the cost of delivering that service, which CMS accounts for through three separate GPCI multipliers:
| RVU Component | What It Measures | Corresponding GPCI |
|---|---|---|
| Work RVU (wRVU) | Physician time, skill, effort, and stress required to perform the service | Work GPCI (PW GPCI) |
| Practice Expense RVU (PE RVU) | Clinical staff, supplies, equipment, and overhead tied to the service | PE GPCI |
| Malpractice RVU (MP RVU) | Cost of professional liability insurance associated with the service | MP GPCI |
Each GPCI applies only to its matching RVU component — Work GPCI never touches the PE RVU, and PE GPCI never touches the malpractice RVU. Treating New York’s GPCI as a single statewide multiplier applied to a total RVU figure produces an inaccurate estimate, because the three components move independently and by different magnitudes.
New York’s Medicare Localities
New York is divided into five CMS payment localities under the same Medicare Administrative Contractor jurisdiction (13202 for most of the state, with 13292/13282 covering Queens and the rest of the state respectively). Using the state as a proxy for any specific location skips this step entirely.
| Locality Number | Locality Name | Coverage |
|---|---|---|
| 01 | Manhattan | New York County |
| 02 | NYC Suburbs / Long Island | Bronx, Kings, Nassau, Richmond, Rockland, Suffolk, Westchester |
| 03 | Poughkeepsie / N NYC Suburbs | Columbia, Delaware, Dutchess, Greene, Orange, Putnam, Sullivan, Ulster |
| 04 | Queens | Queens County |
| 99 | Rest of New York | All remaining counties |
The 2026 GPCI values published by CMS for these localities are:
| Locality | Work GPCI (2026) | PE GPCI (2026) | MP GPCI (2026) |
|---|---|---|---|
| 01 – Manhattan | 1.064 | 1.162 | 1.586 |
| 02 – NYC Suburbs/Long Island | 1.064 | 1.189 | 1.857 |
| 03 – Poughkeepsie/N NYC Suburbs | 1.045 | 1.095 | 1.210 |
| 04 – Queens | 1.064 | 1.182 | 1.442 |
| 99 – Rest of New York | 1.000 (floor applied) | 0.950 | 0.703 |
Note the spread on the malpractice component: MP GPCI ranges from 0.703 in the rest-of-state locality to 1.857 in NYC Suburbs/Long Island — a more than 2.6x difference. Because malpractice RVU is typically a smaller share of total RVU than work or practice expense, this doesn’t dominate the final payment for most codes, but it can meaningfully change the estimate for higher-liability specialties. Work GPCI, by contrast, is subject to a statutory 1.0 floor, which is why the Rest of New York locality shows 1.000 even though its raw calculated value would be slightly below that.
For a locality-specific breakdown rather than the state summary, the Manhattan GPCI and RVU payment page applies these values directly to a selected CPT code, and the New York GPCI state overview is useful for comparing localities side by side before drilling into a specific one.
How Medicare Payment Is Actually Calculated
Medicare’s non-facility payment formula for a CPT or HCPCS code is:
\(\text{Medicare Payment} = \big[(\text{Work RVU} \times \text{Work GPCI}) + (\text{PE RVU} \times \text{PE GPCI}) + (\text{MP RVU} \times \text{MP GPCI})\big] \times \text{Conversion Factor}\)
The conversion factor (CF) is a single national dollar amount, set annually by CMS, that converts the GPCI-adjusted RVU sum into a dollar payment. Starting with CY 2026, CMS applies two separate conversion factors for the first time: $33.5675 for clinicians who qualify as Advanced Alternative Payment Model participants (QPs), and $33.4009 for everyone else (non-QPs). This is a structural change from prior years, when a single CF applied to all physician fee schedule services — anyone using 2025 or earlier figures should not carry those numbers forward unchanged.
Worked Example (Illustrative, Not an Official Rate)
Assume a hypothetical CPT code with these national RVU values — figures below are illustrative only and should not be treated as an actual CMS-published RVU for any real code:
| Component | RVU (example) | GPCI (Manhattan, 2026) | GPCI-Adjusted RVU |
|---|---|---|---|
| Work | 2.00 | 1.064 | 2.128 |
| Practice Expense | 1.50 | 1.162 | 1.743 |
| Malpractice | 0.10 | 1.586 | 0.159 |
| Total | 3.60 | — | 4.030 |
Applying the non-QP 2026 conversion factor:
\(4.030 \times $33.4009 \approx $134.61\)
Run the same RVU inputs through the Rest of New York locality instead (Work 1.000, PE 0.950, MP 0.703), and the GPCI-adjusted total drops to roughly 3.495, producing an estimated payment near $116.75 — about 13% lower than the Manhattan estimate for the identical code. That gap exists purely because of geography; the RVU inputs never changed. This is the core reason a CPT RVU calculator should let you fix the code and setting while swapping only the locality when the goal is isolating a geographic effect.
RVU vs. wRVU vs. Medicare Payment
These three terms get conflated constantly, and the distinction matters for anyone using RVU data for a purpose other than Medicare billing:
| Term | Definition | Primary Use |
|---|---|---|
| Total RVU | Sum of work, PE, and malpractice RVU for a code, before geographic adjustment | Building block for Medicare payment |
| wRVU (Work RVU) | The work component only, unadjusted for geography | Physician productivity measurement and compensation formulas |
| Medicare Payment | Total RVU, adjusted by locality-specific GPCI, multiplied by the applicable conversion factor | The actual Medicare-allowed amount for a service |
A physician compensation plan built on wRVU productivity (for example, a per-wRVU conversion rate negotiated in an employment contract) is an internal business arrangement between the employer and the physician. It has no fixed mathematical relationship to what Medicare actually pays for the underlying service. A group might pay a physician $45 per wRVU regardless of where the group operates, while the same service generates a different Medicare-allowed amount depending on the Manhattan versus Rest of New York GPCI. Confusing these two numbers — treating a compensation-plan wRVU rate as if it equals Medicare’s reimbursement rate — is one of the most common analytical errors in physician compensation review.
Where This Applies in Practice
Coding and billing teams use locality-specific GPCI to confirm that a claim’s expected Medicare-allowed amount lines up with what was actually paid, which helps flag underpayments or locality-assignment errors at the payer level.
Practice managers and revenue cycle staff use New York’s locality spread to model expected reimbursement when opening a satellite location — comparing, for instance, a Manhattan office against a Rest of New York office for the same service mix.
Compensation analysts use wRVU data (not Medicare payment) to benchmark physician productivity against national percentile data, since wRVU-based benchmarks are geography-neutral by design — GPCI does not apply to compensation formulas unless a specific contract explicitly builds it in.
Contract negotiators sometimes reference Medicare-based payment estimates as a floor or comparison point when evaluating commercial payer rates, but Medicare’s fee schedule is not binding on commercial insurers, who set their own fee schedules independently.
What a New York GPCI Estimate Does Not Tell You
A GPCI-adjusted RVU calculation produces a Medicare fee-schedule estimate, not a guaranteed claim payment and not a commercial insurance rate. Several factors sit outside the GPCI/RVU/CF formula entirely:
- Commercial payer contracts often use their own fee schedules, sometimes expressed as a percentage of the Medicare fee schedule but frequently negotiated independently.
- Site-of-service differentials (facility versus non-facility PE RVU) change the practice expense component depending on where the service is performed, separate from geography.
- Modifiers, bundling edits, and National Correct Coding Initiative (NCCI) rules can adjust what’s actually payable for a given claim.
- Sequestration, MIPS payment adjustments, and other CMS program-level adjustments apply on top of the base fee-schedule calculation for individual clinicians.
Keeping the Assumptions Documented
Because GPCI values, RVUs, and the conversion factor all update on an annual CMS cycle, any saved or shared estimate should carry its assumptions with it rather than standing as a bare number. At minimum, that means recording the CPT or HCPCS code, the specific locality (not just “New York”), the data year, whether the QP or non-QP conversion factor was used, and whether the RVU components used facility or non-facility PE values. A number without this context becomes unreliable the moment CMS issues its next annual update — which for the physician fee schedule happens every January.
For a structured way to run this calculation without tracking each GPCI table manually, the GPCI calculator applies the current-year locality values automatically, and a wRVU calculator can be used separately when the question is physician productivity or compensation rather than Medicare reimbursement — keeping those two calculations from being mixed into a single, misleading figure.