MARK FUJII MD
NPI 1831134873
Anesthesiology in San Ramon, CA

Q: What is Mark Fujii's NPI number?

The NPI number for Mark Fujii is 1831134873. It was assigned to this individual provider in the NPPES registry on June 16, 2006.

Q: What is Mark Fujii's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Mark Fujii was last updated on July 27, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.

Active since June 16, 2006PECOS EnrolledAccepts Medicare Assignment

2420 CAMINO RAMON STE 270, SAN RAMON, CA 94583(925) 543-0140(925) 543-0145 Get Directions Write a Review

NPPES record last updated: July 27, 2010. Verified against the NPPES registry weekly; last sync: November 01, 2026.

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About Mark Fujii Md NPPES

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

MARK FUJII MD (NPI 1831134873) is an individual anesthesiology provider in San Ramon, California, licensed in California (G76538) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and is a graduate of Hahnemann University College Of Medicine (1991).

NPPES Registry Identity

NPI1831134873

Entity TypeIndividualMale

Primary Taxonomy207L00000X

Provider Legal NameMARK FUJIICredential: MD

Location Address2420 CAMINO RAMON STE 270San Ramon, CA 94583-4319

Mailing AddressPo Box 7793San Francisco, CA 94120-7793

Phone(925) 543-0140

Fax(925) 543-0145

Sole ProprietorNo

Medical School CMSHahnemann University College Of MedicineGraduated 1991

Enumeration DateJune 16, 2006

Last NPPES UpdateJuly 27, 2010

✔ NPI 1831134873 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians

Taxonomy Code207L00000X

License✔ Licensed in CA · G76538

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.

2420 CAMINO RAMON STE 270, San Ramon, CA 94583

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Other Identifiers 4

Medicaid00G785380CA

Medicare PIN00G765380CA

Medicare UPING22203

Medicare ID-Type Unspecified00G765380

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

Mark Fujii Md 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 ID2961549563

PECOS Enrollment IDI20091030000604

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 Reassignment

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

Premier Anesthesia Of California, PC

0.5 mi

Anesthesiology

6001 NORRIS CANYON RD
San Ramon, CA 94583

Reassigned Medicare billing, California enrollment
176 clinicians in this Medicare group

NPI 1770691859 (925) 275-9200

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 10

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 procedure for total knee joint replacement 01402

Anesthesia for a total knee joint replacement numbs your body to eliminate pain during surgery. This could be general anesthesia where you're unconscious, or regional anesthesia where only the leg is numb. It's administered by a specialist, ensuring safety and comfort.

32 services32 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.

25 services25 patients

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.

23 services23 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.

21 services21 patients

Ultrasonic guidance for blood vessel access 76937

Ultrasonic guidance for blood vessel access is a medical procedure where sound waves are used to create images of your blood vessels. This helps doctors to accurately locate and access the vessels for treatments or tests, ensuring safety and precision.

20 services20 patients

Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) 64447

This procedure involves injecting a numbing agent and/or steroid into a nerve in your thigh. It's done to alleviate pain or inflammation. A needle will be carefully positioned near the nerve, and the medicine will be administered.

18 services18 patients

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

Pre-operative OSA assessment

Percentage of patients who undergo a surgical procedure in the operating room/procedure room that have a pre-operative assessment for Obstructive Sleep Apnea (OSA)

98%584 patients4/55-star benchmark: 100%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 2

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

DR. JAMES HENRY GILL M.D.

Anesthesiology

2420 CAMINO RAMON STE 270
SAN RAMON, CA 94583

Contra Costa County (415) 420-7649

ARNE JOHN BROCK-UTNE MD

Anesthesiology

2420 CAMINO RAMON STE 270
SAN RAMON, CA 94583

Contra Costa County (925) 543-0140

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 Mark Fujii's NPI number?

The NPI number for Mark Fujii is 1831134873. It was assigned to this individual provider in the NPPES registry on June 16, 2006.

Where is Mark Fujii located?

Mark Fujii practices at 2420 Camino Ramon Ste 270, San Ramon, CA 94583. The listed phone number is (925) 543-0140.

What is Mark Fujii's specialty?

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

Is Mark Fujii enrolled in Medicare?

Yes. Mark Fujii 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 organization bills Medicare for Mark Fujii's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Fujii reassigns Medicare benefits to Premier Anesthesia Of California, PC (San Ramon, 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 Mark Fujii'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 Mark Fujii was last updated on July 27, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.