Marni Warner, P.T.
Marni Warner, P.T. is a Geriatric Physical Therapist in San Francisco, CA, registered under NPI 1881995215. This provider registers 5 separate taxonomy codes, which usually means they practise across more than one recognised specialty. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
The practice address on file is 735 GEARY ST STE 502, San Francisco, CA 94109. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| PT 12492 | CA | Geriatric Physical Therapist primary |
| PT 12492 | CA | Physical Therapist |
| PT 12492 | CA | Cardiopulmonary Physical Therapist |
| PT 12492 | CA | Ergonomics Physical Therapist |
| PT 12492 | CA | Orthopedic Physical Therapist |
This provider holds licence PT 12492 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 Geriatrics covers
A licensed physical therapist, including but not limited to an individual who is a Board Certified Specialist in Geriatric Physical Therapy, who has demonstrated specialized knowledge and skill in the comprehensive biopsychosocial assessment and evidence-based management of movement in aging adults. This includes, but is not limited to, specialized knowledge in and consideration of normal age-related changes and pathological manifestations across all systems; cognition and mental health; polypharmacy; fall risk mitigation; bone health; healthy and active aging, and socioeconomic and health policy issues affecting aging adults. The geriatric physical therapist is an integral part of the interdisciplinary geriatric team and serves as an advocate for the highest level of well-being for the older adult. NUCC Health Care Provider Taxonomy, code 2251G0304X
All registered taxonomy codes
This provider registers 5 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 2251G0304X | Geriatric Physical Therapist Geriatrics | PT 12492 | CA | primary |
| 225100000X | Physical Therapist | PT 12492 | CA | |
| 2251C2600X | Cardiopulmonary Physical Therapist Cardiopulmonary | PT 12492 | CA | |
| 2251E1200X | Ergonomics Physical Therapist Ergonomics | PT 12492 | CA | |
| 2251X0800X | Orthopedic Physical Therapist Orthopedic | PT 12492 | CA |
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 | 1881995215 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Nov 17, 2010 |
| Last updated | Nov 17, 2010 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | P.T. |
| Practice address |
735 GEARY ST STE 502 San Francisco, CA 94109 (510) 685-4046 Fax (415) 875-9635 |
| Mailing address |
735 GEARY ST. STE 502 San Francisco, CA 94109 |
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 | 8 | 8 | 1 | 9 | 9 | 5 | 2 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 8 | 7 | 1 | 9 | 9 | 1 | 2 | 2 |
Sum = 65 · next multiple of 10 = 70 · check digit = 5 · actual last digit = 5
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.