Marissa Spruell, DDS
Marissa Spruell, DDS is a provider specialising in Pediatric Dentistry in Arnold, MO, registered under NPI 1003685082.
Getting there
Here is what surrounds this office in Arnold, based on OpenStreetMap data collected Oct 14, 2026. Parking is available about 0.48 mi away. A pharmacy sits 0.36 mi from the entrance (Mercy Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.35 mi away.
Getting here and what is nearby
Restaurant McAlister's Deli 369 ft ~2 min
Restaurant MOD Pizza 578 ft ~3 min
1261 Water Tower Place, Arnold 63010
10:30-21:00
Restaurant Las Fuentes 642 ft ~3 min
Grocery Schnucks 626 ft ~3 min
Grocery ALDI 652 ft ~3 min
2154 Michigan Avenue, Arnold 63010
Mo-Su 08:30-20:00
Grocery Walmart Supercenter 817 ft ~4 min
Parking 959 ft ~4 min
Coffee 7 Brew 0.21 mi ~5 min
1275 Jeffco Boulevard, Arnold 63010
Coffee Sunny Street Cafe 0.29 mi ~6 min
Coffee Honey Bee Tea 0.35 mi ~7 min
Convenience QuikTrip 0.35 mi ~8 min
Pharmacy Mercy Pharmacy 0.35 mi ~8 min
Gas station QuikTrip 0.36 mi ~8 min
Pharmacy Mercy Pharmacy 0.36 mi ~8 min
Hotel Drury Inn & Suites 0.37 mi ~8 min
Hotel WoodSpring Suites St. Louis Arnold 0.38 mi ~8 min
888 Arnold Commons Drive, Arnold 63010
Hotel Pear Tree Inn St. Louis Arnold 0.40 mi ~8 min
1201 Drury Lane, Arnold 63010
Gas station Circle K 0.41 mi ~9 min
Convenience Circle K 0.42 mi ~9 min
Parking 0.42 mi ~9 min
Parking 0.48 mi ~10 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 2025029675 | MO | Pediatric Dentistry primary |
This provider holds licence 2025029675 issued in MO. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Order And Referring Only - Dentist
- PAC ID
- 8921573932
- Enrollment ID
- I20260407003489
Medicare enrolment is recorded as approved under the provider type Order And Referring Only - Dentist. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Pediatric Dentistry covers
An age-defined specialty that provides both primary and comprehensive preventive and therapeutic oral health care for infants and children through adolescence, including those with special health care needs. NUCC Health Care Provider Taxonomy, code 1223P0221X
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 | 1003685082 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jan 1, 2024 |
| Last updated | Aug 18, 2025 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | DDS |
| Practice address |
2231 MICHIGAN AVE Arnold, MO 63010 (636) 287-6603 |
| Mailing address |
8300 DELMAR BLVD APT 129 Saint Louis, MO 63124 |
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 | 6 | 8 | 5 | 0 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 3 | 8 | 1 | 0 | 7 |
Sum = 48 · next multiple of 10 = 50 · check digit = 2 · actual last digit = 2
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.