Kathleen Stumpf
Kathleen Stumpf is a Pediatric Occupational Therapist in Boulder, CO, registered under NPI 1003079096. 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 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
| Licence | State | Specialty |
|---|---|---|
| OT0003421 | CO | Pediatric Occupational Therapist primary |
This provider holds licence OT0003421 issued in CO. 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 Pediatrics covers
Occupational therapists provide services to infants, toddlers and children who have or who are at risk for developmental delays or disabilities. Occupational therapy is concerned with a child's ability to participate in daily life activities or "occupations." Occupational therapists use their unique expertise to help children with social-emotional, physical, cognitive, communication, and adaptive behavioral challenges and to help children to be prepared for and perform important learning and school-related activities and to fulfill their rule as students. Through an understanding of the impact of disability, illness, and impairment on a child's development, plan, ability to learn new skills, and overall occupational performance, occupational therapists design interventions that promote healthy development, establish needed skills, and/or modify environments, all in support of participation in daily activities. NUCC Health Care Provider Taxonomy, code 225XP0200X
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 | 1003079096 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 9, 2008 |
| Last updated | Oct 31, 2023 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Practice address |
6500 ARAPAHOE RD Boulder, CO 80303 (303) 447-1010 |
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 | 0 | 7 | 9 | 0 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 7 | 9 | 0 | 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.