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DR. MENGXI JI MD
NPI 1306340757
Anesthesiology in Mountain View, CA

Active since March 21, 2018PECOS EnrolledAccepts Medicare Assignment
80.58/100
CMS Quality Rating
701 E EL CAMINO REAL, MOUNTAIN VIEW, CA 94040(650) 404-8444 Get Directions Write a Review

NPPES record last updated: May 13, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 13, 2026, Mar 21, 2018 (2 updates tracked since 2018).

About Dr. Mengxi Ji Md NPPES

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

DR. MENGXI JI MD (NPI 1306340757) is an individual anesthesiology provider in Mountain View, California, licensed in California (A165261) and active in the NPI registry since March 2018. She is enrolled in Medicare PECOS and is a graduate of Hofstra North Shore - Lij School Of Medicine (2018).

NPPES Registry Identity

NPI1306340757
Entity TypeIndividualFemale
Primary Taxonomy207L00000X
Provider Legal NameDR. MENGXI JICredential: MD
Location Address701 E EL CAMINO REALMountain View, CA 94040-2833
Mailing AddressPo Box 276950Sacramento, CA 95827-6950
Phone(650) 404-8444
Sole ProprietorYes
Medical School CMSHofstra North Shore - Lij School Of MedicineGraduated 2018
Enumeration DateMarch 21, 2018
Last NPPES UpdateMay 13, 20262 updates tracked since enumeration
NPPES CertifiedMay 13, 2026
✔ NPI 1306340757 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in CA · A165261
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.
701 E EL CAMINO REAL, Mountain View, CA 94040
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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

Dr. Mengxi Ji 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 ID2163767559
PECOS Enrollment IDI20220713000112
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 Mengxi Ji reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

County Of Santa Clara
1.9 mi
Clinic/Center
2500 CALIFORNIA ST
Mountain View, CA 94040
  • Reassigned Medicare billing, California enrollment
  • Also billed through NPI 1588721500 (California), NPI 1629301346 (California)
  • 2,460 clinicians in this Medicare group
NPI 1912650672 (408) 885-5000
Sutter Bay Medical Foundation
5.8 mi
Multi-Specialty
795 EL CAMINO REAL
Palo Alto, CA 94301
  • Reassigned Medicare billing, California enrollment
  • 4,479 clinicians in this Medicare group
NPI 1013950807 (650) 321-4121

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

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.

80.58/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality67.43
Promoting Interoperability100
Improvement Activities40
Cost46.5

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.

JULIA A CRONIN MD
Allergy & Immunology (Allergy)
701 E EL CAMINO REAL
MOUNTAIN VIEW, CA 94040
Santa Clara County (650) 934-7888
TIMOTHY NIEH DO
Family Medicine
701 E EL CAMINO REAL
MOUNTAIN VIEW, CA 94040
Santa Clara County (650) 404-8370
BRYAN HWANG MD
Radiology (Diagnostic Radiology)
701 E EL CAMINO REAL
MOUNTAIN VIEW, CA 94040
Santa Clara County (650) 934-7700
JOHN EARLE BARNES MD
Psychiatry & Neurology (Neurology)
701 E EL CAMINO REAL
MOUNTAIN VIEW, CA 94040
Santa Clara County (650) 934-7300
DR. NATE EUGENE KELLY M.D.
Anesthesiology
701 E EL CAMINO REAL
MOUNTAIN VIEW, CA 94040
Santa Clara County (650) 404-8444
ERIKA DESHMUKH MS, RD
Dietitian, Registered
701 E EL CAMINO REAL
MOUNTAIN VIEW, CA 94040
Santa Clara County (650) 934-7177
DR. SERGIO ALVAREZ MD
Emergency Medicine (Sports Medicine)
701 E EL CAMINO REAL
MOUNTAIN VIEW, CA 94040
Santa Clara County (650) 934-7111
DOANTRANG KIM NGUYEN
Physician Assistant
701 E EL CAMINO REAL
MOUNTAIN VIEW, CA 94040
Santa Clara County (650) 934-7575

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 Mengxi Ji's NPI number?

The NPI number for Mengxi Ji is 1306340757. It was assigned to this individual provider in the NPPES registry on March 21, 2018.

Where is Mengxi Ji located?

Mengxi Ji practices at 701 E El Camino Real, Mountain View, CA 94040. The listed phone number is (650) 404-8444.

What is Mengxi Ji's specialty?

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

Is Mengxi Ji enrolled in Medicare?

Yes. Mengxi Ji 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 Mengxi Ji's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mengxi Ji reassigns Medicare benefits to 2 organizations: County Of Santa Clara (Mountain View, CA) and Sutter Bay Medical Foundation (Palo Alto, 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 Mengxi Ji'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 Mengxi Ji was last updated on May 13, 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.