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ISAAC YOSHII M.D.
NPI 1154636090
Anesthesiology in Stanford, CA

Active since August 16, 2010PECOS EnrolledAccepts Medicare Assignment
300 PASTEUR DR, ROOM H3580, STANFORD, CA 94305(650) 723-6415 Get Directions Write a Review

NPPES record last updated: June 15, 2016. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jun 15, 2016, Feb 18, 2016 (2 updates tracked since 2016).

About Isaac Yoshii M.d. NPPES

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

ISAAC YOSHII M.D. (NPI 1154636090) is an individual anesthesiology provider in Stanford, California, licensed in California (A117751) and active in the NPI registry since August 2010. He is enrolled in Medicare PECOS and is a graduate of University Of California, Irvine, California College Of Medicine (2010).

NPPES Registry Identity

NPI1154636090
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameISAAC YOSHIICredential: M.D.
Location Address300 PASTEUR DR, ROOM H3580Stanford, CA 94305-2200
Mailing Address300 Pasteur Dr, Room H3580Stanford, CA 94305-2200 · (650) 723-6415
Phone(650) 723-6415
Sole ProprietorNo
Medical School CMSUniversity Of California, Irvine, California College Of MedicineGraduated 2010
Enumeration DateAugust 16, 2010
Last NPPES UpdateJune 15, 20162 updates tracked since enumeration
✔ NPI 1154636090 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in CA · A117751
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
Also ListedAnesthesiology · Critical Care MedicineTaxonomy 207LC0200X · License A117751 (CA)
300 PASTEUR DR, Stanford, CA 94305
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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

Isaac Yoshii 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 ID7618269028
PECOS Enrollment IDI20160705002033
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

2

Medicare enrollment records show Isaac Yoshii reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Aretaeus Telemedicine Inc.
76 mi
Critical Care Medicine
1046 WINDING RIDGE RD
Santa Rosa, CA 95404
  • Reassigned Medicare billing, California enrollment
  • 68 clinicians in this Medicare group
NPI 1548490261 (707) 326-5855
Newport Harbor Anesthesia Consultants Medical Group Inc
356 mi
Anesthesiology
ONE HOAG DRIVE, DEPARTMENT OF ANESTHESIOLOGY
Newport Beach, CA 92663
  • Reassigned Medicare billing, California enrollment
  • 110 clinicians in this Medicare group
NPI 1205885357 (949) 764-6954

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 7

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.

Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 00731
This procedure involves the use of an endoscope, a flexible tube with a light and camera, to examine your esophagus, stomach, or upper small bowel. Anesthesia ensures you are comfortable and pain-free during the procedure.
47 services47 patients
Anesthesia for other procedure on large bowel using an endoscope 00811
Anesthesia for an endoscopic procedure on the large bowel ensures comfort and relaxation during the procedure. You'll be given medication to make you drowsy or asleep, eliminating any discomfort. The medication can be administered through a vein or inhaled.
20 services20 patients
Anesthesia for procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand 01810
Anesthesia for procedures on the forearm, wrist, and hand involves administering medication to block sensation in these areas. This helps ensure comfort and painlessness during surgeries or treatments involving nerves, muscles, tendons, and tissue in these regions.
16 services16 patients
Insertion of artery tube for blood sampling or infusion through skin 36620
This procedure involves placing a small tube into an artery, usually in the wrist or elbow, to collect blood samples or administer medication. It's done under local anesthesia and is a common, safe practice.
14 services14 patients
Anesthesia for other procedure on upper abdomen 00790
Anesthesia for an upper abdomen procedure involves using medications to help you feel no pain during the operation. It can be general, where you're unconscious, or regional, where just the abdomen area is numbed. It ensures comfort and stillness, aiding a successful procedure.
12 services12 patients
Anesthesia for x-ray or radiation therapy 01922
Anesthesia for x-ray or radiation therapy involves administering medication to help you relax or sleep during the procedure. It's used to ensure comfort, minimize movement, and reduce anxiety. The type of anesthesia used depends on the procedure and patient's health.
12 services12 patients

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.

PRISTA CHARUWORN MD
Internal Medicine (Gastroenterology)
300 PASTEUR DR, ALWAY BUILD M211, MC 5187
STANFORD, CA 94305
Santa Clara County (650) 723-6661
ANDREW CHARLES PICEL M.D
Radiology (Vascular & Interventional Radiology)
300 PASTEUR DR
STANFORD, CA 94305
Santa Clara County (650) 723-4000
MATTHEW A WRIGHT M.D. PH.D.
Psychiatry & Neurology (Psychiatry)
300 PASTEUR DR
STANFORD, CA 94305
Santa Clara County (650) 723-4000
DR. QUAZI ZUBAIR AL-TARIQ M.D.
Radiology (Diagnostic Radiology)
300 PASTEUR DR
STANFORD, CA 94305
Santa Clara County (650) 723-4000
ANGIE DEE MURKINS NP
Nurse Practitioner
300 PASTEUR DR
STANFORD, CA 94305
Santa Clara County (650) 723-4000
DR. JAMSHID GHAJAR MD PHD
Neurological Surgery
300 PASTEUR DR
STANFORD, CA 94305
Santa Clara County (650) 723-4000
SARA BAKHTARY M.D.
Pathology (Anatomic Pathology & Clinical Pathology)
300 PASTEUR DR, LANE 235
STANFORD, CA 94305
Santa Clara County (650) 723-5252
YU KUANG LAI MD
Internal Medicine (Critical Care Medicine)
300 PASTEUR DR
STANFORD, CA 94305
Santa Clara County (650) 723-4000

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 Isaac Yoshii's NPI number?

The NPI number for Isaac Yoshii is 1154636090. It was assigned to this individual provider in the NPPES registry on August 16, 2010.

Where is Isaac Yoshii located?

Isaac Yoshii practices at 300 Pasteur Dr Room H3580, Stanford, CA 94305. The listed phone number is (650) 723-6415.

What is Isaac Yoshii's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Isaac Yoshii enrolled in Medicare?

Yes. Isaac Yoshii 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 Isaac Yoshii's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Isaac Yoshii reassigns Medicare benefits to 2 organizations: Aretaeus Telemedicine Inc. (Santa Rosa, CA) and Newport Harbor Anesthesia Consultants Medical Group Inc (Newport Beach, 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 Isaac Yoshii'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 Isaac Yoshii was last updated on June 15, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.