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THOMAS YAN
NPI 1093336430
Student in an Organized Health Care Education/Training Program in Palo Alto, CA

Active since April 27, 2020PECOS EnrolledAccepts Medicare Assignment
900 WELCH RD STE 350, PALO ALTO, CA 94304(650) 723-9215 Get Directions Write a Review

NPPES record last updated: April 27, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Thomas Yan NPPES

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

THOMAS YAN (NPI 1093336430) is an individual student in an organized health care education/training program in Palo Alto, California and active in the NPI registry since April 2020. He is enrolled in Medicare PECOS and is a graduate of Tulane University School Of Medicine (2020).

NPPES Registry Identity

NPI1093336430
Entity TypeIndividualMale
Primary Taxonomy390200000X
Provider Legal NameTHOMAS YAN
Location Address900 WELCH RD STE 350Palo Alto, CA 94304-1807
Mailing Address900 Welch Rd Ste 350Palo Alto, CA 94304-1807
Phone(650) 723-9215
Sole ProprietorNo
Medical School CMSTulane University School Of MedicineGraduated 2020
Enumeration DateApril 27, 2020
NPPES CertifiedApril 27, 2020
✔ NPI 1093336430 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyStudent in an Organized Health Care Education/Training ProgramStudent, Health Care
Taxonomy Code390200000X
Definition
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
900 WELCH RD STE 350, Palo Alto, CA 94304
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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

Thomas Yan 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 ID7911341417
PECOS Enrollment IDI20240222002756
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

3

Medicare enrollment records show Thomas Yan reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Permanente Medical Group Inc
4.4 mi
Internal Medicine
1190 VETERANS BLVD
Redwood City, CA 94063
  • Reassigned Medicare billing, California enrollment
  • 20,078 clinicians in this Medicare group
NPI 1639252604 (650) 299-2000
Emergency Physicians Associates Fremont PC
14 mi
Emergency Medicine
2000 MOWRY AVE
Fremont, CA 94538
  • Reassigned Medicare billing, California enrollment
  • 103 clinicians in this Medicare group
NPI 1790250967 (510) 797-1111
Emergency Physicians Associates San Jose PC
15 mi
Emergency Medicine
2105 FOREST AVE
San Jose, CA 95128
  • Reassigned Medicare billing, California enrollment
  • 197 clinicians in this Medicare group
NPI 1306311576 (408) 947-2500

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 3

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.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
46 services46 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
45 services44 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
28 services28 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.

THAMANNA NISHATH
Student in an Organized Health Care Education/Training Program
900 WELCH RD STE 350
PALO ALTO, CA 94304
Santa Clara County (650) 723-6576
PETER DAVIS-ALLEN MD
Emergency Medicine
900 WELCH RD STE 350
PALO ALTO, CA 94304
Santa Clara County (650) 723-6576
MS. URSULA DEAN BSN, RN, MSN, NP
Nurse Practitioner (Family)
900 WELCH RD STE 350
PALO ALTO, CA 94304
Santa Clara County (650) 724-3254
BRENDA IRENE CASTOLO AGACNP-BC
Nurse Practitioner
900 WELCH RD STE 350
PALO ALTO, CA 94304
Santa Clara County (650) 723-6576
SAMANTHA IZUNO MD
Emergency Medicine
900 WELCH RD STE 350
PALO ALTO, CA 94304
Santa Clara County (650) 723-6576
GABRIELA FUENTES
Student in an Organized Health Care Education/Training Program
900 WELCH RD STE 350
PALO ALTO, CA 94304
Santa Clara County (650) 723-6576
JACOB ANEES RAZZOUK
Student in an Organized Health Care Education/Training Program
900 WELCH RD STE 350
PALO ALTO, CA 94304
Santa Clara County (909) 633-8143
NIMIT KETANBHAI DESAI MD
Student in an Organized Health Care Education/Training Program
900 WELCH RD STE 350
PALO ALTO, CA 94304
Santa Clara County (650) 723-6576

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 Thomas Yan's NPI number?

The NPI number for Thomas Yan is 1093336430. It was assigned to this individual provider in the NPPES registry on April 27, 2020.

Where is Thomas Yan located?

Thomas Yan practices at 900 Welch Rd Ste 350, Palo Alto, CA 94304. The listed phone number is (650) 723-9215.

What is Thomas Yan's specialty?

The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.

Is Thomas Yan enrolled in Medicare?

Yes. Thomas Yan 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 Thomas Yan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Yan reassigns Medicare benefits to 3 organizations: Permanente Medical Group Inc (Redwood City, CA), Emergency Physicians Associates Fremont PC (Fremont, CA) and Emergency Physicians Associates San Jose PC (San Jose, 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 Thomas Yan'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 Thomas Yan was last updated on April 27, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.