Katrina Boom, M.A. CCC-SLP
Katrina Boom, M.A. CCC-SLP is a provider specialising in Speech-Language Pathologist in Carlsbad, CA, registered under NPI 1003535519. 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 Carlsbad, based on OpenStreetMap data collected Oct 4, 2026. Parking is available about 0.44 mi away. The nearest transit stop is 0.22 mi away. A pharmacy sits 0.35 mi from the entrance (Carlsbad Village Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.35 mi away.
Getting here and what is nearby
Hotel Casa del Sol 294 ft ~2 min
Transit 400 ft ~2 min
Hotel Extended Stay America 894 ft ~4 min
1050 Grand Ave, Carlsbad 92008
Transit 0.22 mi ~5 min
Transit 0.22 mi ~5 min
Gas station Shell 0.24 mi ~5 min
1145 Carlsbad Village Drive, Carlsbad 92008
Convenience Food Mart 0.25 mi ~6 min
1145 Carlsbad Village Drive, Carlsbad 92008
Hotel Motel 6 Carlsbad - Village 0.26 mi ~6 min
1006 Carlsbad Village Drive, Carlsbad 92008
Convenience 7-Eleven 0.29 mi ~6 min
1089 Carlsbad Village Drive, Carlsbad 92008-1804
Gas station 7-Eleven 0.29 mi ~6 min
Restaurant Mikko Sushi 0.30 mi ~7 min
Restaurant Carl's Jr. 0.30 mi ~7 min
Convenience Food Mart 0.32 mi ~7 min
920 Carlsbad Village Drive, Carlsbad 92008
Restaurant Vallarta Express 0.32 mi ~7 min
2952 Harding Street, Carlsbad 92008
Gas station Chevron 0.33 mi ~7 min
920 Carlsbad Village Drive, Carlsbad 92008
Coffee French Cafe And Bakery 0.35 mi ~8 min
Pharmacy Carlsbad Village Pharmacy 0.35 mi ~7 min
Grocery Smart & Final 0.36 mi ~8 min
Parking 0.41 mi ~9 min
Parking 0.43 mi ~9 min
Parking 0.44 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 |
|---|---|---|
| 21164 | CA | Speech-Language Pathologist primary |
This provider holds licence 21164 issued in CA. 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 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 | 1003535519 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Aug 26, 2022 |
| Last updated | Aug 26, 2022 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | M.A. CCC-SLP |
| Practice address |
1251 KNOWLES AVE Carlsbad, CA 92008 (408) 921-9804 |
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 | 5 | 3 | 5 | 5 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 1 | 3 | 1 | 5 | 2 |
Sum = 41 · next multiple of 10 = 50 · check digit = 9 · actual last digit = 9
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.