Marissa Geist, LSW
Marissa Geist, LSW is a provider specialising in Social Worker in Westfield, NJ, registered under NPI 1003405796.
Getting there
Here is what surrounds this office in Westfield, based on OpenStreetMap data collected Sep 24, 2026. Parking is available about 408 ft away. A pharmacy sits 0.22 mi from the entrance (CVS Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 661 ft away.
Getting here and what is nearby
Restaurant 1950 Originals 104 ft ~1 min
Coffee Rockn' Joe 232 ft ~1 min
Hotel Westfield Inn 392 ft ~2 min
Parking 370 ft ~2 min
Parking 372 ft ~2 min
Restaurant Ono Bowls 387 ft ~2 min
Restaurant Qdoba 389 ft ~2 min
Parking 408 ft ~2 min
Gas station BP 582 ft ~3 min
Coffee Starbucks 661 ft ~3 min
Convenience 7-Eleven 713 ft ~3 min
South Avenue West, Westfield 07090
Grocery Trader Joe's 904 ft ~4 min
155 Elm Street, Westfield 07090
Mo-Su 08:00-21:00
Pharmacy CVS Pharmacy 0.22 mi ~5 min
210 South Avenue West, Westfield 07090
Gas station RaceWay 0.28 mi ~6 min
Grocery Stop & Shop 0.30 mi ~7 min
219 Elm Street, Westfield 07090
Mo-Sa 07:00-22:00; Su 07:00-21:00
Gas station Exxon 0.32 mi ~7 min
421 Central Avenue, Westfield 07090
Grocery Vine Ripe Market 0.43 mi ~9 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 |
|---|---|---|
| 44SL06593900 | NJ | Social Worker primary |
This provider holds licence 44SL06593900 issued in NJ. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
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 Social Worker covers
A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public. NUCC Health Care Provider Taxonomy, code 104100000X
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 | 1003405796 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jan 16, 2021 |
| Last updated | Jan 16, 2021 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | LSW |
| Practice address |
7 ELM ST Westfield, NJ 07090 (908) 202-6303 |
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 | 4 | 0 | 5 | 7 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 8 | 0 | 1 | 7 | 9 |
Sum = 54 · next multiple of 10 = 60 · check digit = 6 · actual last digit = 6
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.