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DR. SEIJI YAMAGUCHI M.D.
NPI 1932543030
Surgery in San Francisco, CA

Active since April 20, 2013PECOS EnrolledAccepts Medicare Assignment
505 PARNASSUS AVE # M-896, SAN FRANCISCO, CA 94143(415) 608-4051 Get Directions Write a Review

NPPES record last updated: May 7, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: May 7, 2026, Apr 8, 2020 (2 updates tracked since 2020).

About Dr. Seiji Yamaguchi M.d. NPPES

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

DR. SEIJI YAMAGUCHI M.D. (NPI 1932543030) is an individual surgery provider in San Francisco, California, licensed in California (A154172) and active in the NPI registry since April 2013. He is enrolled in Medicare PECOS, maintains a secondary practice location in San Francisco, and is a graduate of Georgetown University School Of Medicine (2013).

NPPES Registry Identity

NPI1932543030
Entity TypeIndividualMale
Primary Taxonomy208600000X
Provider Legal NameDR. SEIJI YAMAGUCHICredential: M.D.
Location Address505 PARNASSUS AVE # M-896San Francisco, CA 94143-2204
Mailing Address505 Parnassus Ave # M-896San Francisco, CA 94143-2204 · (415) 608-4051
Phone(415) 608-4051
Sole ProprietorYes
Medical School CMSGeorgetown University School Of MedicineGraduated 2013
Enumeration DateApril 20, 2013
Last NPPES UpdateMay 7, 20262 updates tracked since enumeration
NPPES CertifiedMay 7, 2026
✔ NPI 1932543030 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208600000X
License✔ Licensed in CA · A154172
Definition
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
Also ListedTransplant SurgeryTaxonomy 204F00000X · License A154172 (CA)
505 PARNASSUS AVE # M-896, San Francisco, CA 94143
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Secondary Practice Location 1

Location 11100 Van Ness Ave Fl 3San Francisco, CA 94109-6978 · Phone (415) 558-7051

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Imperial Insurance Companies, Inc..Insurance ›

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

Dr. Seiji Yamaguchi M.d. 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.

PECOS PAC ID345534699
PECOS Enrollment IDI20180912002270
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

5

Medicare enrollment records show Seiji Yamaguchi reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Ucsf Dept Of Surgery
0.1 mi
Surgery
505 PARNASSUS AVE
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 761 clinicians in this Medicare group
NPI 1477627537 (415) 353-2161
Ucsf Medical Group Business Services
0.1 mi
Internal Medicine
400 PARNASSUS AVE
San Francisco, CA 94122
  • Reassigned Medicare billing, California enrollment
  • 5,544 clinicians in this Medicare group
NPI 1477624104 (415) 353-2808
University Of California San Francisco
0.1 mi
Internal Medicine
400 PARNASSUS AVE
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 5,645 clinicians in this Medicare group
NPI 1164512851 (415) 476-1000
Sutter Bay Medical Foundation
17 mi
Multi-Specialty
12 CAMINO ENCINAS
Orinda, CA 94563
  • Reassigned Medicare billing, California enrollment
  • 4,479 clinicians in this Medicare group
NPI 1366898538 (510) 204-8180
University Of Texas Health Science Center At San Antonio
1,471 mi
Diagnostic Radiology
25753 OLD FREDERICKSBURG
Boerne, TX 78015
  • Reassigned Medicare billing, Texas enrollment
  • 2,397 clinicians in this Medicare group
NPI 1417921834 (210) 450-9000

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

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
15 services14 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
12 services12 patients
Preparation of donor kidney for transplantation 50323
Preparation of a kidney for transplantation involves careful evaluation of the donor organ. It includes checking for diseases, ensuring compatibility, and preserving the organ in a cold solution until transplantation. This process ensures the best outcome for the recipient.
11 services11 patients
Transplantation of donor kidney 50360
Transplantation of a donor kidney involves replacing a non-functioning kidney with a healthy one from a donor. This procedure can significantly improve the quality of life for those with serious kidney disease. The new kidney can perform the essential task of filtering blood and removing waste.
11 services11 patients

Physician 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.

New Patient
$104.51 typical visit price
range $69.00 – $202.35
Typical copayment $26.12 (range $17.25 – $50.58)
Most-billed visit code 99203
Established Patient
$84.91 typical visit price
range $23.44 – $166.46
Typical copayment $21.22 (range $5.86 – $41.61)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES

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

STEFANY MARIE BARRIGA
Nurse Practitioner (Acute Care)
505 PARNASSUS AVE # M-896
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-1898

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 Seiji Yamaguchi's NPI number?

The NPI number for Seiji Yamaguchi is 1932543030. It was assigned to this individual provider in the NPPES registry on April 20, 2013.

Where is Seiji Yamaguchi located?

Seiji Yamaguchi practices at 505 Parnassus Ave # M-896, San Francisco, CA 94143. The listed phone number is (415) 608-4051.

What is Seiji Yamaguchi's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is Seiji Yamaguchi enrolled in Medicare?

Yes. Seiji Yamaguchi 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 Seiji Yamaguchi's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Seiji Yamaguchi reassigns Medicare benefits to 5 organizations: Ucsf Dept Of Surgery (San Francisco, CA), Ucsf Medical Group Business Services (San Francisco, CA), University Of California San Francisco (San Francisco, CA), Sutter Bay Medical Foundation (Orinda, CA) and University Of Texas Health Science Center At San Antonio (Boerne, TX). 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 Seiji Yamaguchi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Seiji Yamaguchi accept?

Health plans from Imperial Insurance Companies, Inc. list Seiji Yamaguchi as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Seiji Yamaguchi was last updated on May 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months 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.