David Isaacson, CMT
David Isaacson, CMT is a Massage Therapist in Whittier, CA, registered under NPI 1003346297. 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 Whittier, based on OpenStreetMap data collected Sep 20, 2026. Parking is available about 0.49 mi away at Public Parking. A pharmacy sits 0.45 mi from the entrance (Rite Aid), which helps if you leave with a prescription.
Getting here and what is nearby
Parking Puente Hills Preserve Trail Parking 862 ft ~4 min
Restaurant Fresh Off the Hook Fish Grill 0.44 mi ~9 min
Pharmacy Rite Aid 0.45 mi ~10 min
Restaurant Sage Restaurant & Lounge 0.46 mi ~10 min
Parking 0.48 mi ~10 min
Parking Public Parking 0.49 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 |
|---|---|---|
| 70125 | CA | Massage Therapist primary |
This provider holds licence 70125 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 Massage Therapist covers
An individual trained in the manipulation of tissues (as by rubbing, stroking, kneading, or tapping) with the hand or an instrument for remedial or hygienic purposes. NUCC Health Care Provider Taxonomy, code 225700000X
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 | 1003346297 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 19, 2017 |
| Last updated | Jul 21, 2022 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | CMT |
| Practice address |
5837 COMSTOCK AVE APT 27G Whittier, CA 90601 (707) 980-4976 |
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 | 3 | 4 | 6 | 2 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 4 | 3 | 2 | 9 |
Sum = 53 · next multiple of 10 = 60 · check digit = 7 · actual last digit = 7
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.