Marilyn Sanderfer, MSW, LSW
Marilyn Sanderfer, MSW, LSW is a provider specialising in Social Worker in Dayton, OH, registered under NPI 1003220112.
Getting there
Here is what surrounds this office in Dayton, based on OpenStreetMap data collected Sep 12, 2026. Parking is available about 0.32 mi away at Leigh Building. The nearest transit stop is 377 ft away, served by RTA 1315. A pharmacy sits 0.35 mi from the entrance (CVS Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.48 mi away.
Getting here and what is nearby
Transit RTA 1315 377 ft ~2 min
Parking Montgomery County Parking garage 750 ft ~3 min
40 Vista View
Pharmacy Kettering Physician Network 714 ft ~3 min
Restaurant Table 33 0.27 mi ~6 min
130 West 2nd Street
Tu-Fr 11:00-21:00; Sa 09:00-21:00; Su 09:00-15:00
Restaurant Donut & More 0.27 mi ~6 min
Restaurant Subway 0.30 mi ~6 min
125 North Ludlow Street, Dayton 45402
Mo-Fr 07:00-18:00; Sa 10:00-15:00
Parking City of Dayton Municipal Parking Garage 0.32 mi ~7 min
Mo-Su 00:00-23:59
Parking Leigh Building 0.32 mi ~7 min
100 West 2nd Street
Pharmacy CVS Pharmacy 0.35 mi ~8 min
Grocery Stop-N-Save Foods 0.41 mi ~9 min
36 West 3rd Street
Coffee Startup Grounds 0.48 mi ~10 min
31 South Main Street, Dayton 45402
Mo-Fr 08:00-14:30
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 |
|---|---|---|
| S.0024621 | OH | Social Worker primary |
This provider holds licence S.0024621 issued in OH. 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 | 1003220112 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 17, 2014 |
| Last updated | Apr 22, 2026 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | MSW, LSW |
| Practice address |
405 W 1ST ST Dayton, OH 45402 (937) 479-7010 |
| Mailing address |
601 S EDWIN C MOSES BLVD Dayton, OH 45417 |
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 | 2 | 2 | 0 | 1 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 2 | 0 | 1 | 2 |
Sum = 38 · next multiple of 10 = 40 · 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.