1. Home
  2. Directory
  3. California
  4. San Jose
  5. Internal Medicine
  6. NPI Profile

DR. YIXI ZHANG M.D.
NPI 1457709800
Internal Medicine in San Jose, CA

Active since May 26, 2016PECOS Enrolled
3535 ROSS AVE STE 100, SAN JOSE, CA 95124(669) 577-6072 Get Directions Write a Review

NPPES record last updated: April 1, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Apr 1, 2023, Feb 10, 2023, Jan 24, 2020 (3 updates tracked since 2020).

About Dr. Yixi Zhang M.d. NPPES

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

DR. YIXI ZHANG M.D. (NPI 1457709800) is an individual internal medicine provider in San Jose, California, licensed in California (A166644) and active in the NPI registry since May 2016. She is enrolled in Medicare PECOS and is a graduate of Harvard Medical School (2015).

NPPES Registry Identity

NPI1457709800
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. YIXI ZHANGCredential: M.D.
Location Address3535 ROSS AVE STE 100San Jose, CA 95124-3038
Mailing Address8679 Hayloft PlRiverside, CA 92508-7145 · (951) 275-4592
Phone(669) 577-6072
Sole ProprietorYes
Medical School CMSHarvard Medical SchoolGraduated 2015
Enumeration DateMay 26, 2016
Last NPPES UpdateApril 1, 20233 updates tracked since enumeration
NPPES CertifiedApril 1, 2023
✔ NPI 1457709800 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A166644
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedHospitalistTaxonomy 208M00000X · License A166644 (CA)
3535 ROSS AVE STE 100, San Jose, CA 95124
Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Yixi Zhang M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID4284929852
PECOS Enrollment IDI20200219001372
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

7

Medicare enrollment records show Yixi Zhang reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Galen Inpatient Physicians Inc
1.8 mi
Internal Medicine
2425 SAMARITAN DR
San Jose, CA 95124
  • Reassigned Medicare billing, California enrollment
  • 962 clinicians in this Medicare group
NPI 1477906758 (408) 559-2011
Permanente Medical Group Inc
6.7 mi
Internal Medicine
710 LAWRENCE EXPRESSWAY
Santa Clara, CA 95051
  • Reassigned Medicare billing, California enrollment
  • 20,078 clinicians in this Medicare group
NPI 1073606299 (408) 851-1000
Quantum Bay Area Hospitalist Medical Group Inc
12 mi
Hospitalist
2500 GRANT RD
Mountain View, CA 94040
  • Reassigned Medicare billing, California enrollment
  • 217 clinicians in this Medicare group
NPI 1902279656 (650) 940-7000
Peninsula Hospitalist Associates, Inc.
34 mi
Hospitalist
1501 TROUSDALE DR, N/A
Burlingame, CA 94010
  • Reassigned Medicare billing, California enrollment
  • 41 clinicians in this Medicare group
NPI 1619232956 (650) 288-0600
San Francisco Unified Physicians Group, Inc.
46 mi
Hospitalist
845 JACKSON ST
San Francisco, CA 94133
  • Reassigned Medicare billing, California enrollment
  • 40 clinicians in this Medicare group
NPI 1982104162 (415) 982-2400
Marin Hospitalist Medical Group, Inc.
58 mi
Internal Medicine
250 BON AIR RD, 3RD FLOOR
Greenbrae, CA 94904
  • Reassigned Medicare billing, California enrollment
  • 82 clinicians in this Medicare group
NPI 1023041753 (415) 925-7545
Beaver Medical Group P C
346 mi
Family Medicine
2 WEST FERN AVENUE
Redlands, CA 92373
  • Reassigned Medicare billing, California enrollment
  • 635 clinicians in this Medicare group
NPI 1649503319 (909) 793-3311

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 5

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.

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
164 services160 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
64 services64 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
31 services14 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
20 services11 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
15 services15 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95124 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
$156.67 typical visit price
range $70.37 – $206.04
Typical copayment $39.16 (range $17.59 – $51.51)
Most-billed visit code 99204
Established Patient
$121.77 typical visit price
range $23.96 – $169.60
Typical copayment $30.44 (range $5.99 – $42.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 6

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
13 suppliers31 claims52 services$5.81 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
8 suppliers15 claims15 services$1.05 avg. paid by Medicare
Hospital bed, semi-electric (head and foot adjustment), with any type side rails, with mattress E0260
DME-Hospital Beds · category DB000N
2 suppliers14 claims14 services$40.63 avg. paid by Medicare
Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
4 suppliers36 claims36 services$14.49 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
4 suppliers36 claims36 services$66.06 avg. paid by Medicare
Standard hemi (low seat) wheelchair K0002
DME-Wheelchairs · category DD000N
1 supplier11 claims11 services$33.06 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 3

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

MISS KIMBERLY SUE BROWN LAC ND
Acupuncturist
3535 ROSS AVE STE 100
SAN JOSE, CA 95124
Santa Clara County (408) 357-3422
DR. HAMED JONATHAN AFLAKIAN D.C
Chiropractor
3535 ROSS AVE STE 100
SAN JOSE, CA 95124
Santa Clara County (408) 489-1619
AFLAKIAN CHIROPRACTIC CORPORATION
Point of Service
3535 ROSS AVE STE 100
SAN JOSE, CA 95124
Santa Clara County (408) 489-1619

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 Yixi Zhang's NPI number?

The NPI number for Yixi Zhang is 1457709800. It was assigned to this individual provider in the NPPES registry on May 26, 2016.

Where is Yixi Zhang located?

Yixi Zhang practices at 3535 Ross Ave Ste 100, San Jose, CA 95124. The listed phone number is (669) 577-6072.

What is Yixi Zhang's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Yixi Zhang enrolled in Medicare?

Yes. Yixi Zhang is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Yixi Zhang's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Yixi Zhang reassigns Medicare benefits to 7 organizations: Galen Inpatient Physicians Inc (San Jose, CA), Permanente Medical Group Inc (Santa Clara, CA), Quantum Bay Area Hospitalist Medical Group Inc (Mountain View, CA), Peninsula Hospitalist Associates, Inc. (Burlingame, CA), San Francisco Unified Physicians Group, Inc. (San Francisco, CA) and 2 more organizations, listed in the Medicare section above. 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 Yixi Zhang'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 Yixi Zhang was last updated on April 1, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.