Flu shot cost in San Francisco, CA — inpatient
In San Francisco-Oakland-Fremont, CA, 10 hospitals list a cash price for flu shot, standard dose, preservative-free, for age 6 months and older as an inpatient: from $33.60 to $86.06, with a median of $33.60. The lowest listed price is at Kaiser Foundation Hospital - San Francisco and 8 other hospitals. Across California, the median is $33.60 at 66 hospitals.
Cash prices at 10 facilities across 10 cities for code 90656, as an inpatient (admitted to hospital) . Collected Sep 23, 2026; the hospital files themselves were last updated between Apr 1, 2026 and Apr 1, 2026.
Lowest$33.60Kaiser Foundation Hospital - San Francisco + 8 more
Median$33.60half pay less
Highest$86.06in this market
Difference2.6×highest vs lowest
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in San Francisco-Oakland-Fremont, CA.
median
Lowest $33.60Highest $105.60
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Kaiser Foundation Hospital - San Francisco lowest San Francisco, CA · (415) 833-2646 IIV3 VACC PRESERVATIVE FREE 0.5 ML DOSAGE IM USE | $33.60 | $60.00 | — | 44% | — source file |
| Kaiser Foundation Hospital - San Leandro lowest San Leandro, CA · (510) 454-1000 IIV3 VACC PRESERVATIVE FREE 0.5 ML DOSAGE IM USE | $33.60 | $60.00 | — | 44% | — source file |
| Kaiser Foundation Hospital - Fremont lowest Fremont, CA · (510) 784-4000 IIV3 VACC PRESERVATIVE FREE 0.5 ML DOSAGE IM USE | $33.60 | $60.00 | — | 44% | — source file |
| Kaiser Foundation Hospital - Antioch lowest Antioch, CA · (925) 813-6500 IIV3 VACC PRESERVATIVE FREE 0.5 ML DOSAGE IM USE | $33.60 | $60.00 | — | 44% | — source file |
| Kaiser Foundation Hospital - Walnut Creek lowest Walnut Creek, CA · (925) 295-4000 IIV3 VACC PRESERVATIVE FREE 0.5 ML DOSAGE IM USE | $33.60 | $60.00 | — | 44% | — source file |
| Kaiser Foundation Hospital - Redwood City lowest Redwood City, CA · (650) 299-2000 IIV3 VACC PRESERVATIVE FREE 0.5 ML DOSAGE IM USE | $33.60 | $60.00 | — | 44% | — source file |
| Kaiser Foundation Hospital - South San Francisco lowest South San Francisco, CA · (650) 742-3200 IIV3 VACC PRESERVATIVE FREE 0.5 ML DOSAGE IM USE | $33.60 | $60.00 | — | 44% | — source file |
| Kaiser Foundation Hospital - Oakland/Richmond lowest Oakland, CA · (510) 752-1000 IIV3 VACC PRESERVATIVE FREE 0.5 ML DOSAGE IM USE | $33.60 | $60.00 | — | 44% | — source file |
| Kaiser Foundation Hospital - San Rafael lowest San Rafael, CA · (415) 444-2000 IIV3 VACC PRESERVATIVE FREE 0.5 ML DOSAGE IM USE | $33.60 | $60.00 | — | 44% | — source file |
| Kaiser Foundation Hospital - Walnut Creek Walnut Creek, CA · (925) 295-4000 flu vaccine TS 2025-26 (6 mos up) PF 45 mcg (15 mcg x 3)/0.5 mL Syringe 0.5 mL SYRINGE | $47.90 | $85.54 | — | 44% | — source file |
| Kaiser Foundation Hospital - Oakland/Richmond Oakland, CA · (510) 752-1000 flu vaccine TS 2025-26 (6 mos up) PF 45 mcg (15 mcg x 3)/0.5 mL Syringe 0.5 mL SYRINGE | $47.90 | $85.54 | — | 44% | — source file |
| Kaiser Foundation Hospital - Antioch Antioch, CA · (925) 813-6500 flu vaccine TS 2025-26 (6 mos up) PF 45 mcg (15 mcg x 3)/0.5 mL Syringe 0.5 mL SYRINGE | $47.90 | $85.54 | — | 44% | — source file |
| Kaiser Foundation Hospital - San Leandro San Leandro, CA · (510) 454-1000 flu vaccine TS 2025-26 (6 mos up) PF 45 mcg (15 mcg x 3)/0.5 mL Syringe 0.5 mL SYRINGE | $47.90 | $85.54 | — | 44% | — source file |
| Kaiser Foundation Hospital - San Rafael San Rafael, CA · (415) 444-2000 flu vaccine TS 2025-26 (6 mos up) PF 45 mcg (15 mcg x 3)/0.5 mL Syringe 0.5 mL SYRINGE | $47.90 | $85.54 | — | 44% | — source file |
| Kaiser Foundation Hospital - San Francisco San Francisco, CA · (415) 833-2646 flu vaccine TS 2025-26 (6 mos up) PF 45 mcg (15 mcg x 3)/0.5 mL Syringe 0.5 mL SYRINGE | $47.90 | $85.54 | — | 44% | — source file |
| Kaiser Foundation Hospital - Fremont Fremont, CA · (510) 784-4000 flu vaccine TS 2025-26 (6 mos up) PF 45 mcg (15 mcg x 3)/0.5 mL Syringe 0.5 mL SYRINGE | $47.90 | $85.54 | — | 44% | — source file |
| Kaiser Foundation Hospital - South San Francisco South San Francisco, CA · (650) 742-3200 flu vaccine TS 2025-26 (6 mos up) PF 45 mcg (15 mcg x 3)/0.5 mL Syringe 0.5 mL SYRINGE | $47.90 | $85.54 | — | 44% | — source file |
| Kaiser Foundation Hospital - Redwood City Redwood City, CA · (650) 299-2000 flu vaccine TS 2025-26 (6 mos up) PF 45 mcg (15 mcg x 3)/0.5 mL Syringe 0.5 mL SYRINGE | $47.90 | $85.54 | — | 44% | — source file |
| Kaiser Foundation Hospital - South San Francisco South San Francisco, CA · (650) 742-3200 flu vaccine TS 2025-26 (36 mos up) PF 45 mcg (15 mcg x 3)/0.5 mL Syringe 0.5 mL SYRINGE | $52.33 | $93.45 | — | 44% | — source file |
| Kaiser Foundation Hospital - San Francisco San Francisco, CA · (415) 833-2646 flu vaccine TS 2025-26 (36 mos up) PF 45 mcg (15 mcg x 3)/0.5 mL Syringe 0.5 mL SYRINGE | $52.33 | $93.45 | — | 44% | — source file |
| Kaiser Foundation Hospital - Oakland/Richmond Oakland, CA · (510) 752-1000 flu vaccine TS 2025-26 (36 mos up) PF 45 mcg (15 mcg x 3)/0.5 mL Syringe 0.5 mL SYRINGE | $52.33 | $93.45 | — | 44% | — source file |
| Kaiser Foundation Hospital - Walnut Creek Walnut Creek, CA · (925) 295-4000 flu vaccine TS 2025-26 (36 mos up) PF 45 mcg (15 mcg x 3)/0.5 mL Syringe 0.5 mL SYRINGE | $52.33 | $93.45 | — | 44% | — source file |
| Kaiser Foundation Hospital - Fremont Fremont, CA · (510) 784-4000 flu vaccine TS 2025-26 (36 mos up) PF 45 mcg (15 mcg x 3)/0.5 mL Syringe 0.5 mL SYRINGE | $52.33 | $93.45 | — | 44% | — source file |
| Kaiser Foundation Hospital - Redwood City Redwood City, CA · (650) 299-2000 flu vaccine TS 2025-26 (36 mos up) PF 45 mcg (15 mcg x 3)/0.5 mL Syringe 0.5 mL SYRINGE | $52.33 | $93.45 | — | 44% | — source file |
| Kaiser Foundation Hospital - San Rafael San Rafael, CA · (415) 444-2000 flu vaccine TS 2025-26 (36 mos up) PF 45 mcg (15 mcg x 3)/0.5 mL Syringe 0.5 mL SYRINGE | $52.33 | $93.45 | — | 44% | — source file |
| Kaiser Foundation Hospital - Antioch Antioch, CA · (925) 813-6500 flu vaccine TS 2025-26 (36 mos up) PF 45 mcg (15 mcg x 3)/0.5 mL Syringe 0.5 mL SYRINGE | $52.33 | $93.45 | — | 44% | — source file |
| Kaiser Foundation Hospital - San Leandro San Leandro, CA · (510) 454-1000 flu vaccine TS 2025-26 (36 mos up) PF 45 mcg (15 mcg x 3)/0.5 mL Syringe 0.5 mL SYRINGE | $52.33 | $93.45 | — | 44% | — source file |
| Stanford Health Care Tri-Valley Pleasanton, CA · (925) 847-3000 FLU VAC TS 2025-26(6MOS UP)-PF 45 MCG (15 MCG X 3)/0.5 ML IM SYRG | $86.06 | $215.16 | — | 60% | Apr 1, 2026 source file |
| Stanford Health Care Tri-Valley Pleasanton, CA · (925) 847-3000 Influenza Vac Splt Pf, Tri 0.5ml Dose | $105.60 | $264.00 | — | 60% | Apr 1, 2026 source file |
Inpatient: lowest $33.60, median $33.60, highest $86.06 — a 2.6× difference within the same market.
As an outpatient, the same code is billed by 11 facilities here, median $33.60 — that is the price to compare if you are not being admitted.
What it is
A standard-dose flu shot protects against the influenza strains expected in the coming season, and the formula changes every year. This code is the preservative-free version given to most people.
What the price covers
The price is for the vaccine dose. Giving the shot is usually a separate line (code 90471 for the first vaccine of the visit); Medicare bills use G0008 instead.