MR. ARISTOTTLE VONN MARSON OTR
NPI 1184785461
Occupational Therapist in San Francisco, CA

Active since December 12, 2006
1635 DIVISADERO ST, SUITE 300, SAN FRANCISCO, CA 94115(415) 833-4950(415) 833-2612 Get Directions Write a Review

NPPES record last updated: January 3, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Mr. Aristottle Vonn Marson Otr NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MR. ARISTOTTLE VONN MARSON OTR (NPI 1184785461) is an individual occupational therapist in San Francisco, California, licensed in California (OT287) and active in the NPI registry since December 2006.

NPPES Registry Identity

NPI1184785461
Entity TypeIndividualMale
Primary Taxonomy225X00000X
Provider Legal NameMR. ARISTOTTLE VONN MARSONCredential: OTR
Location Address1635 DIVISADERO ST, SUITE 300San Francisco, CA 94115-3036
Mailing Address1635 Divisadero St, Suite 300San Francisco, CA 94115-3036 · (415) 833-4950 · Fax (415) 833-2612
Fax(415) 833-2612
Sole ProprietorNo
Enumeration DateDecember 12, 2006
Last NPPES UpdateJanuary 3, 2022
✔ NPI 1184785461 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOccupational TherapistRespiratory, Developmental, Rehabilitative and Restorative Service Providers
Taxonomy Code225X00000X
License✔ Licensed in CA · OT287
Definition
An occupational therapist is a person who has graduated from an entry-level occupational therapy program accredited by the Accreditation Council for Occupational Therapy Education (ACOTE) or predecessor organizations, or approved by the World Federation of Occupational Therapists (WFOT), or an equivalent international occupational therapy education program; has successfully completed a period of supervised fieldwork experience required by the occupational therapy program; has passed a nationally recognized entry-level examination for occupational therapists, and fulfills state requirements for licensure, certification, or registration. An occupational therapist provides interventions based on evaluation and which emphasize the therapeutic use of everyday life activities (i.e., occupations) with individuals or groups for the purpose of facilitating participation in roles and situations and in home, school, workplace, community and other settings. Occupational therapy services are provided for the purpose of promoting health and wellness and are provided to those who have or are at risk for developing an illness, injury, disease, disorder, condition, impairment, disability, activity limitation, or participation restriction. Occupational therapists address the physical, cognitive, psychosocial, sensory, and other aspects of occupational performance in a variety of contexts to support engagement in everyday life activities that affect health, well-being, and quality of life.
1635 DIVISADERO ST, San Francisco, CA 94115

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mr. Aristottle Vonn Marson Otr is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Billing Reassignment

Medicare enrollment records show Aristottle Marson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Internal Medicine
2238 GEARY
San Francisco, CA 94116
  • Reassigned Medicare billing, California enrollment
  • 20,078 clinicians in this Medicare group

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Nurse Practitioner (Obstetrics & Gynecology)
1635 DIVISADERO ST, SUITE 600 RM 17
SAN FRANCISCO, CA 94115
Physical Therapist
1635 DIVISADERO ST, 3RD FLOOR , PTD
SAN FRANCISCO, CA 94115
Anesthesiology
1635 DIVISADERO ST, SUITE 625, UCSF MEDICAL CENTER, DEPT. OF ANESTHESIA
SAN FRANCISCO, CA 94115
Internal Medicine (Endocrinology, Diabetes & Metabolism)
1635 DIVISADERO ST, SUITE 525
SAN FRANCISCO, CA 94115
Optometrist
1635 DIVISADERO ST, SUITE 400A
SAN FRANCISCO, CA 94115
Physical Therapist
1635 DIVISADERO ST, SUITE 300
SAN FRANCISCO, CA 94115
Optometrist
1635 DIVISADERO ST, 3RD FLOOR
SAN FRANCISCO, CA 94115
Physical Therapist
1635 DIVISADERO ST
SAN FRANCISCO, CA 94115

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Aristottle Marson's NPI number?

The NPI number for Aristottle Marson is 1184785461. It was assigned to this individual provider in the NPPES registry on December 12, 2006.

Where is Aristottle Marson located?

Aristottle Marson practices at 1635 Divisadero St Suite 300, San Francisco, CA 94115. The listed phone number is (415) 833-4950.

What is Aristottle Marson's specialty?

The primary specialty registered for this NPI is Occupational Therapist with taxonomy code 225X00000X.

Is Aristottle Marson enrolled in Medicare?

Yes. Aristottle Marson is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Aristottle Marson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Aristottle Marson reassigns Medicare benefits to Permanente Medical Group Inc (San Francisco, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Aristottle Marson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Aristottle Marson was last updated on January 3, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.