RSV antibody shot (100 mg dose) cost in San Jose, CA
In San Jose-Sunnyvale-Santa Clara, CA, 5 hospitals list a cash price for RSV antibody shot for infants and toddlers, larger dose (1 mL, 100 mg): from $365.68 to $2,202.40, with a median of $862.50. The lowest listed price is at Kaiser Foundation Hospital - San Jose and 1 other hospital — $496.82 less than the median here. Across California, the median is $923.23 at 69 hospitals.
Cash prices at 5 facilities across 5 cities for code 90381, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 23, 2026; the hospital files themselves were last updated between Mar 31, 2026 and Apr 1, 2026.
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 Jose-Sunnyvale-Santa Clara, CA.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Kaiser Foundation Hospital - San Jose lowest San Jose, CA · (408) 972-7000 RSV MONOCLONAL ANTB SEASONAL DOSE 1 ML IM USE source file | $365.68 | $653.00 | — | 44% |
| Kaiser Foundation Hospital - Santa Clara lowest Santa Clara, CA · (408) 236-6400 RSV MONOCLONAL ANTB SEASONAL DOSE 1 ML IM USE source file | $365.68 | $653.00 | — | 44% |
| Lucile Salter Packard Children's Hospital at Stanford Palo Alto, CA · (650) 497-8000 HB Rsv Monoclonal Antb Seas Dose Im 1ml File of Mar 31, 2026 · source file | $862.50 | $1,725.00 | $551.83 | 50% |
| El Camino Hospital Mountain View, CA · (650) 940-7000 nirsevimab-alip 100 mg/mL syringe 1 mL Syringe File of Apr 1, 2026 · source file | $923.23 | $3,692.93 | — | 75% |
| Kaiser Foundation Hospital - San Jose San Jose, CA · (408) 972-7000 nirsevimab-alip 100 mg/mL Syringe 1 mL SYRINGE source file | $1,042.49 | $1,861.59 | — | 44% |
| Kaiser Foundation Hospital - Santa Clara Santa Clara, CA · (408) 236-6400 nirsevimab-alip 100 mg/mL Syringe 1 mL SYRINGE source file | $1,042.49 | $1,861.59 | — | 44% |
| Stanford Health Care Stanford, CA · (650) 723-4000 Rsv Beyfortus 100mg/Ml Im File of Apr 1, 2026 · source file | $2,202.40 | $5,506.00 | — | 60% |
| Stanford Health Care Stanford, CA · (650) 723-4000 NIRSEVIMAB-ALIP 100 MG/ML IM SYRG File of Apr 1, 2026 · source file | $2,594.46 | $6,486.15 | — | 60% |
| Lucile Salter Packard Children's Hospital at Stanford Palo Alto, CA · (650) 497-8000 NIRSEVIMAB-ALIP 100 MG/ML INTRAMUSCULAR SYRINGE File of Mar 31, 2026 · source file | $3,754.09 | $7,508.19 | $2,401.87 | 50% |
Outpatient: lowest $365.68, median $862.50, highest $2,202.40 — a 6.0× difference within the same market.
As an inpatient, the same code is billed by 4 facilities here, median $644.46. Inpatient and outpatient prices are not comparable and are kept on separate pages: the inpatient charge covers admission, not the same purchase.
Cash or insurance?
At the one hospital here that publishes insurer rates for this code, the cash price is not below the highest rate a health plan has negotiated. If you have insurance but have not met your deductible, you usually pay your plan's negotiated rate, which falls somewhere in the "Insurers pay" column. Paying cash can cost less, but a cash payment usually does not count toward your deductible. Ask the hospital for both numbers before you book.
What it is
This is the larger dose (100 mg) of nirsevimab (Beyfortus), an antibody shot that protects infants from severe RSV. Babies weighing 5 kg (11 lb) or more in their first RSV season get this dose, and high-risk toddlers get two of them in their second season.
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, 90472 for each additional one).