SG4 GP catchment: which practices serve the SG4 postcode district
31,753 people living in the SG4 postcode district are registered with a GP (July 2026), 95% of them at 10 practices. The practice with the most is The Portmill Surgery in Hitchin, with 8,386 (26%). The 3 largest together hold 70% of the district's registrations.
Latest data: July 2026. Registered patients by neighbourhood July 2026; GP Patient Survey 2026.
These are the practices people living in SG4 are actually registered with, from NHS England's count of registered patients by neighbourhood; a practice's own catchment boundary can be wider or narrower. The district is mostly in North Hertfordshire.
| Practice | Town | Residents registered | Share | Overall experience good | CQC rating |
|---|---|---|---|---|---|
| The Portmill Surgery | Hitchin | 8,386 | 26% | 90% | Good |
| Courtenay House Surgery | Hitchin | 8,163 | 26% | 71% | Good |
| Regal Chambers Surgery | Hitchin | 5,595 | 18% | 72% | Good |
| Bridge Cottage Surgery | Welwyn Garden City | 3,837 | 12% | 69% | Good |
| Dr Rajpreet Millan | Hitchin | 2,075 | 7% | 51% | Good |
| The Village Surgery | Harpenden | 792 | 2% | 80% | Good |
| Stanmore Medical Group | Stevenage | 512 | 2% | 65% | Good |
| Knebworth Surgery | Knebworth | 400 | 1% | 54% | – |
| King George Surgery | Stevenage | 391 | 1% | 62% | Good |
| The Elms Medical Practice | Harpenden | 374 | 1% | 78% | Good |
Across the 10 practices serving SG4 with survey results, the share of patients describing their overall experience as good ranges from 51% at Dr Rajpreet Millan to 90% at The Portmill Surgery, with a median of 70% (England: 77%). 1 is above England and 4 below by more than the survey's margin of error. Dr Rajpreet Millan has the highest share finding it easy to get through by phone (61%, England 57%).
Which GP practices serve SG4?
The Portmill Surgery, Courtenay House Surgery, Regal Chambers Surgery, Bridge Cottage Surgery and Dr Rajpreet Millan have the most registered patients living in SG4.
How many people in SG4 are registered with a GP?
31,753, 95% of them at 10 practices.
Which GP near SG4 do patients rate highest?
Among the practices serving the district, The Portmill Surgery: 90% of its patients rated their overall experience good in the 2026 GP Patient Survey.