MOTOKO ISHII
NPI 1669015772
Nurse Practitioner - Adult Health in San Francisco, CA
About Motoko Ishii NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MOTOKO ISHII (NPI 1669015772) is an individual adult health provider in San Francisco, California, licensed in California (NP95012612) and active in the NPI registry since October 2019. She is enrolled in Medicare PECOS, is affiliated with Ut Southwestern University Hospital - William P. Clements Jr., and is a graduate of Other (2010).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Motoko Ishii is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Motoko Ishii reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 2,112 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 5,645 clinicians in this Medicare group
San Francisco, CA 94122
- Reassigned Medicare billing, California enrollment
- 5,544 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Ut Southwestern University Hospital - William P. Clements Jr.
Acute Care Hospitals · Dallas, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94143 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
SAN FRANCISCO, CA 94143
SAN FRANCISCO, CA 94143
SAN FRANCISCO, CA 94143
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 Motoko Ishii's NPI number?
The NPI number for Motoko Ishii is 1669015772. It was assigned to this individual provider in the NPPES registry on October 21, 2019.
Where is Motoko Ishii located?
Motoko Ishii practices at 1825 4th St, San Francisco, CA 94143. The listed phone number is (415) 476-1000.
What is Motoko Ishii's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Adult Health, with taxonomy code 363LA2200X.
Is Motoko Ishii enrolled in Medicare?
Yes. Motoko Ishii is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Motoko Ishii's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Motoko Ishii reassigns Medicare benefits to 3 organizations: Regents Of The University Of California (San Francisco, CA), University Of California San Francisco (San Francisco, CA) and Ucsf Medical Group Business Services (San Francisco, CA). Each 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 Motoko Ishii's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Motoko Ishii affiliated with any hospitals?
According to CMS data, Motoko Ishii is affiliated with Ut Southwestern University Hospital - William P. Clements Jr..
When was this NPI record last updated?
The NPPES record for Motoko Ishii was last updated on October 21, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Motoko Ishii · NPI 1669015772
Adult Health physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since October 21, 2019.
## Identity
- **NPI:** 1669015772 (Entity type: Individual)
- **Enumerated:** October 21, 2019
- **Primary specialty:** Nurse Practitioner - Adult Health · taxonomy 363LA2200X
- **State license:** NP95012612 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1825 4TH ST, San Francisco, CA 94143-2350
- **Phone:** (415) 476-1000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Regents Of The University Of California (NPI 1235322348, San Francisco, CA); University Of California San Francisco (NPI 1346329380, San Francisco, CA); Ucsf Medical Group Business Services (NPI 1477624104, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2010
## Record status
- **NPPES last updated:** October 21, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1669015772) · Data from the CMS NPPES public registry.