Sandra Caldwell, CD(DONA), BA
Sandra Caldwell, CD(DONA), BA is a provider specialising in Doula in Redwood City, CA, registered under NPI 1003068198. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in Redwood City, based on OpenStreetMap data collected Sep 3, 2026. Parking is available about 0.44 mi away at Upland Parking Garage. The nearest transit stop is 0.42 mi away, served by Jefferson Avenue & Altamont Way. If you arrive early, there is a coffee shop 0.21 mi away.
Getting here and what is nearby
Parking 922 ft ~4 min
Parking 1,017 ft ~4 min
Restaurant Speederia Pizzeria 0.20 mi ~4 min
Grocery Bonfare 0.20 mi ~4 min
Coffee Emerald Hills Cafe & Roastery 0.21 mi ~5 min
3203 Oak Knoll Drive, Redwood City 94062
Restaurant Asya 0.21 mi ~5 min
3215 Oak Knoll Drive, Redwood City
Mo-Sa 12:00-14:00, 17:00-21:00; Su 17:00-21:00
Restaurant Sancho's Taqueria 0.21 mi ~5 min
3205 Oak Knoll Drive
Gas station Canyon Auto Service 0.24 mi ~5 min
Transit Alameda de las Pulgas & Harding Avenue 0.31 mi ~7 min
Transit Alameda de las Pulgas & Harding Avenue 0.31 mi ~7 min
Transit Jefferson Avenue & Altamont Way 0.42 mi ~9 min
Parking Upland Parking Garage 0.44 mi ~9 min
363 Alameda, Redwood City 94062
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Doula covers
Doulas work in a variety of settings and have been trained to provide physical, emotional, and informational support to a mother before, during, and just after birth and/or provide emotional and practical support to a mother during the postpartum period. NUCC Health Care Provider Taxonomy, code 374J00000X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 2278P3900X | Neonatal/Pediatric Certified Respiratory Therapist Neonatal/Pediatrics | — | CA | |
| 374J00000X | Doula | — | — | primary |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003068198 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Oct 21, 2008 |
| Last updated | Nov 3, 2009 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | CD(DONA), BA |
| Practice address |
71 FOSS DR Redwood City, CA 94062 (650) 261-9008 |
| Other identifiers |
374J00000X
· Other (CA) |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 0 | 6 | 8 | 1 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 6 | 7 | 1 | 9 |
Sum = 52 · next multiple of 10 = 60 · check digit = 8 · actual last digit = 8
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.