Lauren Onderdonk, M.S.
Lauren Onderdonk, M.S. is a provider specialising in Speech-Language Pathologist in Fair Lawn, NJ, registered under NPI 1003247594. 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 Fair Lawn, based on OpenStreetMap data collected Sep 13, 2026. Parking is available about 168 ft away. The nearest transit stop is 0.33 mi away. A pharmacy sits 0.21 mi from the entrance (CVS Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 949 ft away.
Getting here and what is nearby
Parking 88 ft ~1 min
Parking 129 ft ~1 min
Parking 168 ft ~1 min
Restaurant Mei Sushi 586 ft ~3 min
14-20 Plaza Road, Fair Lawn 07410
Tu-Th 11:00-22:00; Fr-Sa 11:00-23:00; Su 13:00-22:00
Coffee Cozie Cafe 666 ft ~3 min
14-25 Plaza Road
Mo-Fr 07:00-17:00; Sa,Su 08:00-17:00
Gas station Exxon 866 ft ~4 min
Restaurant Dunkin' 851 ft ~4 min
22-20 Fair Lawn Avenue, Fair Lawn 07410
04:30-22:00
Coffee Modern Bagel Cafe 949 ft ~4 min
Transit 1,021 ft ~4 min
Restaurant Panera Bread 1,009 ft ~4 min
23-02 Fair Lawn Avenue, Fair Lawn 07410
Mo-Sa 06:00-22:00;Su 07:00-22:00
Pharmacy CVS Pharmacy 0.21 mi ~5 min
Transit 0.29 mi ~6 min
Transit 0.33 mi ~7 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 |
|---|---|---|
| TL-2290 | NJ | Speech-Language Pathologist primary |
This provider holds licence TL-2290 issued in NJ. 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
- Practitioner - Qualified Speech Language Pathologist
- PAC ID
- 2264768167
- Enrollment ID
- I20190731000394
Medicare enrolment is recorded as approved under the provider type Practitioner - Qualified Speech Language Pathologist. 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 Speech-Language Pathologist covers
The speech-language pathologist is the professional who engages in clinical services, prevention, advocacy, education, administration, and research in the areas of communication and swallowing across the life span from infancy through geriatrics. Speech-language pathologists address typical and atypical impairments and disorders related to communication and swallowing in the areas of speech sound production, resonance, voice, fluency, language (comprehension and expression), cognition, and feeding and swallowing. NUCC Health Care Provider Taxonomy, code 235Z00000X
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 | 1003247594 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Dec 9, 2013 |
| Last updated | Dec 8, 2025 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | M.S. |
| Practice address |
18-01 POLLITT DR Fair Lawn, NJ 07410 (201) 478-4200 |
| Mailing address |
19 CARLTON TER Bloomfield, NJ 07003 |
| Other names |
Lauren Mucci Former Legal Business Name |
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 | 4 | 7 | 5 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 4 | 5 | 5 | 9 |
Sum = 56 · next multiple of 10 = 60 · check digit = 4 · actual last digit = 4
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.