Alison Maasdorf
Alison Maasdorf is a provider specialising in Speech-Language Pathologist in Boulder, CO, registered under NPI 1003688680.
Getting there
Here is what surrounds this office in Boulder, based on OpenStreetMap data collected Sep 4, 2026. Parking is available about 669 ft away. There is EV charging 0.48 mi from the office (Boulder JCC) — useful if you are driving in from out of town. The nearest transit stop is 301 ft away, served by Vo Tech Dr & Education Center Dr.
Getting here and what is nearby
Transit Arapahoe Rd & 65th St 111 ft ~1 min
Parking 261 ft ~1 min
Transit 6400 Block Arapahoe Rd 292 ft ~2 min
Transit Vo Tech Dr & Education Center Dr 301 ft ~2 min
Parking 347 ft ~2 min
Parking 669 ft ~3 min
EV charging Boulder JCC 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
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 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 | 1003688680 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Oct 26, 2023 |
| Last updated | Nov 27, 2023 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Practice address |
6500 ARAPAHOE RD Boulder, CO 80303 (720) 561-6561 |
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 | 8 | 6 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 3 | 8 | 7 | 6 | 7 |
Sum = 60 · next multiple of 10 = 60 · check digit = 0 · actual last digit = 0
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.