Click any (i) button to open a methodology or source deep-dive for that panel.
All 10 SPARK counties fall within the ARC Appalachian region. Rural Appalachian counties carry some of the highest mortality burdens in the country — not from rare diseases, but from the chronic conditions primary care manages daily: hypertension, diabetes, COPD, heart disease, and kidney disease.
| Population | Rate | vs. Nat'l |
|---|---|---|
| Non-Appalachian U.S. | 304 | Baseline |
| Appalachian Region | 370 | +22% |
| Rural Appalachian | 401 | +32% |
| SPARK Portfolio (est.) | ~415 | +37% |
| Condition | Premium |
|---|---|
| All-Cause Mortality | +32% |
| Heart Disease | +34% |
| COPD Hospitalization | +39% |
| Diabetes Mortality | +36% |
| Cancer Mortality | +18% |
| Quartile | PCP/100k | All-Cause AAMR |
|---|---|---|
| Q1 (SPARK Zone) | ~13/100k | 828 |
| Q2 | ~37/100k | 798 |
| Q3 | ~56/100k | 737 |
| Q4 | ~108/100k | 679 |
Rural patients in these counties are not dying better with less care — they are dying with less, in worse settings, with less preparation. Lower rural Medicare end-of-life spending is not evidence of efficiency. It is evidence of access failure.
Five counties have median ages above 47 — including Union (55.9), Rabun (52.6), Fannin (52.1). The FFS Panel Aged 75+ share is the key acuity driver: the 75+ cohort carries chronic disease rates ~40% higher than 65–74, directly elevating CCM eligibility.
| County | FFS Pool | Pop 65+ | Median Age | Avg Age FFS 65+ | FFS Panel 75+ | 2+ Chronic | 5+ Chronic |
|---|---|---|---|---|---|---|---|
| Habersham | 5,066 | 18.5% | 42.1 | ~74 | ~40–44% | ~73–77% | ~30–35% |
| Lumpkin | 3,946 | 17.8% | 40.5 | ~73 | ~38–42% | ~71–75% | ~28–33% |
| Stephens | 3,554 | 21.2% | 46.1 | ~74 | ~44–48% | ~75–79% | ~31–36% |
| White | 3,800 | 24.1% | 47.8 | ~75 | ~46–50% | ~76–80% | ~32–37% |
| Rabun | 2,989 | 27.3% | 52.6 | ~76 | ~50–54% | ~78–82% | ~33–38% |
| Union | 5,571 | 34.0% | 55.9 | ~77 | ~52–56% | ~80–84% | ~35–40% |
| Fannin | 3,440 | 28.4% | 52.1 | ~76 | ~50–54% | ~78–82% | ~33–38% |
| Gilmer | 3,651 | 19.6% | 43.5 | ~74 | ~41–45% | ~72–76% | ~29–34% |
| Gordon | 5,640 | 14.8% | 39.8 | ~73 | ~38–42% | ~69–73% | ~27–32% |
| Chattooga | 3,743 | 17.6% | 41.1 | ~74 | ~40–44% | ~71–75% | ~29–34% |
| Portfolio Avg/Total | 44,400 | 22.3% | 46.2 | ~74.6 | ~44–49% | ~75–80% | ~31–36% |
| GA RUCC 4-7 Avg | ~290,000 | ~19–20% | ~44–46 | ~73–74 | ~38–42% | ~67–73% | ~27–30% |
| Population/Setting | 2+ Chronic | 5+ Chronic | Source |
|---|---|---|---|
| National Medicare FFS (65+, 2022) | ~67% | ~15% | CMS CCW 2022 |
| Most Rural Medicare (national) | Higher burden | 32% have 5+ | KFF Aug 2025 |
| Rural vs. Urban Medicare | Systematically higher | 32% vs. 25% | KFF Aug 2025 |
| SE / Appalachian rural counties | ~72–76% | ~28–36% | ARC + CCW applied |
| SPARK 10-County Portfolio (est.) | ~75–80% | ~31–36% | Applied estimates |
| GA RUCC 4-7 Average (est.) | ~67–73% | ~27–30% | Rural GA + CCW |
| Chronic Condition | National FFS (2022 CCW) | Est. NE GA Portfolio | Rural GA / App. Premium |
|---|---|---|---|
| Hypertension | 66.8% | 72–76% | +8–14% |
| Hyperlipidemia | 65.5% | 68–72% | +4–10% |
| Diabetes | 26.4% | 33–38% | +25–44% |
| COPD | 13.1% | 18–22% | +37–68% |
| Chronic Kidney Disease | 18.7% | 24–28% | +28–50% |
| Ischemic Heart Disease | 23.0% | 27–31% | +17–35% |
| Depression | 17.0% | 19–22% | +12–29% |
| Heart Failure | 14.5% | 17–21% | +17–45% |
| Portfolio 2+ Conditions | ~67% national | ~75–80% SPARK | +12–19% |
The model starts at $181 PMPM on Day 1 — driven by new-patient E&M codes, Annual Wellness Visits, and the HPSA 10% bonus. CCM/APCM billing does not begin until M2–M3 (60–75 day CMS enrollment lag). The ramp to $239 is a 4-year CCM maturation story.
| Period | Avg PMPM | CCM/APCM Maturity | RPM Enroll | Visit Freq | Key Driver |
|---|---|---|---|---|---|
| M1 | $181 | Zero — CMS lag 60–75 days | 0% | 4.0 | New-pt E&M + AWV; no CCM yet |
| M2–M6 | ~$185–$200 | Low: first CCM billings | 0–15% | 4.0 | CCM billing begins; new-pt surge fading |
| M6–M12 | ~$200–$215 | Building: 40–60% enrolled | 15–30% | 4.0 | CCM maturing; RPM onboarding; APCM adding |
| Y2 | ~$215–$228 | Maturing: 60–75% enrollment | 30–42% | 4.0→6.5 | Visit freq ramp; all streams building |
| Y3–Y4 | ~$228–$237 | Steady: 70–82% success | ~42% | 6.5 | Approaching terminal; all revenue mature |
| Y4–Y5 | $239 | Full: 82% CCM success | ~42% | 6.5 | Terminal PMPM — model base case |
| Age Phase | Visit Freq. | Revenue Profile |
|---|---|---|
| 67–70 Early Enrollment |
4–5 / yr | FFS E&M, AWV, preventive screens. CCM eligibility begins if 2+ chronic conditions. |
| 71–75 Condition Onset |
5–7 / yr | HTN, diabetes, early cardiac. CCM/APCM billing active. Specialist co-management begins. |
| 76–80 Multi-Chronic |
7–9 / yr | Multiple chronic conditions, monthly care coordination. Full G0511 APCM revenue. Highest primary care engagement. |
| 81–85+ High Acuity |
9–12+ / yr | Maximum visit frequency. Transitional care, AWVs, advance care planning. 2× per-beneficiary Medicare spend vs. age 65–74 cohort. |
| # | County | County Seat | FFS Pool | HPSA | Launch | Year | Rationale |
|---|---|---|---|---|---|---|---|
| 1 | Habersham | Cornelia | 5,066 | ✓ HPSA | M1 | Y1 · SEED | Flagship · US-441 corridor · NGMC 4 mi · PECOS anchor |
| 2 | Lumpkin | Dahlonega | 3,946 | ✓ HPSA | M3 | Y1 · SEED | GA-400/US-19 · NGMC on-campus · 8.1% ACO pen |
| 3 | Stephens | Toccoa | 3,554 | ✓ HPSA | M5 | Y1 · SEED | 5-county hub · Stephens Co. Hosp 2 mi · Strong TOC |
| 4 | White | Cleveland | 3,766 | ✓ HPSA | M13 | Y2 · SER-A | US-129 corridor · contiguous to Lumpkin · 10% Medicare bonus applies |
| 5 | Rabun | Clayton | 3,251 | ✓ HPSA | M13 | Y2 · SER-A | Upper mountain · 0.8% HMO — near-zero MA competition |
| 6 | Union | Blairsville | 5,571 | ✓ HPSA | M15 | Y2 · SER-A | Largest FFS pool in Y2 cohort · 0.9% HMO · 10% Medicare bonus applies |
| 7 | Fannin | Blue Ridge | 5,078 | ✓ HPSA | M25 | Y3 · Self | 0.6% HMO — cleanest Medicare market in GA |
| 8 | Gilmer | Ellijay | 5,460 | ✓ HPSA | M25 | Y3 · Self | No FQHC in county · contiguous to Fannin · NW GA cluster |
| 9 | Gordon | Calhoun | 6,107 | ✓ HPSA | M27 | Y3 · Self | Largest FFS pool in portfolio · HPSA-designated · 10% Medicare bonus applies |
| 10 | Chattooga | Summerville | 2,577 | ✓ HPSA | M29 | Y3 · Self | NW Georgia anchor · completes 10-county portfolio · HPSA-designated per fin. model v3k |
| TOTAL PORTFOLIO | 44,376 | All 10 counties HPSA-designated · 25% pen = ~8,800 enrolled | |||||