TRISTAN MARK THAM YONG REN MD
NPI 1225590979
Otolaryngology in Stanford, CA

Q: What is Tristan Tham Yong Ren's NPI number?

The NPI number for Tristan Tham Yong Ren is 1225590979. It was assigned to this individual provider in the NPPES registry on April 2, 2019.

Q: What is Tristan Tham Yong Ren's specialty?

The primary specialty registered for this NPI is Otolaryngology with taxonomy code 207Y00000X.

Active since April 02, 2019PECOS EnrolledAccepts Medicare Assignment

300 PASTEUR DR, STANFORD, CA 94305(650) 723-4000 Get Directions Write a Review

NPPES record last updated: October 11, 2024. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Oct 11, 2024, Jun 18, 2024, May 1, 2024 and 1 more (4 updates tracked since 2019).

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About Tristan Mark Tham Yong Ren Md NPPES

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

TRISTAN MARK THAM YONG REN MD (NPI 1225590979) is an individual otolaryngology provider in Stanford, California, licensed in California (A193202) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS, maintains a secondary practice location in Palo Alto, and is a graduate of Other (2012).

NPPES Registry Identity

NPI1225590979

Entity TypeIndividualMale

Primary Taxonomy207Y00000X

Provider Legal NameTRISTAN MARK THAM YONG RENCredential: MD

Location Address300 PASTEUR DRStanford, CA 94305-2200

Mailing Address300 Pasteur DrStanford, CA 94305-2200 · (650) 723-4000

Phone(650) 723-4000

Sole ProprietorNo

Medical School CMSOtherGraduated 2012

Enumeration DateApril 2, 2019

Last NPPES UpdateOctober 11, 20244 updates tracked since enumeration

NPPES CertifiedOctober 11, 2024

✔ NPI 1225590979 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOtolaryngologyAllopathic & Osteopathic Physicians

Taxonomy Code207Y00000X

License✔ Licensed in CA · A193202

Definition

An otolaryngologist-head and neck surgeon provides comprehensive medical and surgical care for patients with diseases and disorders that affect the ears, nose, throat, the respiratory and upper alimentary systems and related structures of the head and neck. An otolaryngologist diagnoses and provides medical and/or surgical therapy or prevention of diseases, allergies, neoplasms, deformities, disorders and/or injuries of the ears, nose, sinuses, throat, respiratory and upper alimentary systems, face, jaws and the other head and neck systems. Head and neck oncology, facial plastic and reconstructive surgery and the treatment of disorders of hearing and voice are fundamental areas of expertise.

300 PASTEUR DR, Stanford, CA 94305

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Secondary Practice Location 1

Location 1801 Welch RdPalo Alto, CA 94304-1611 · Phone (650) 723-5281

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Tristan Mark Tham Yong Ren 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 ID1254668049

PECOS Enrollment IDI20240514002704

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.

Areas of Expertise CMS Part B claims 11

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.

Diagnostic exam of nasal passages using an endoscope 31231

A diagnostic exam of nasal passages using an endoscope is a non-invasive procedure. A small, flexible tube with a light and camera at the end, called an endoscope, is inserted into the nose. This allows the doctor to view the nasal passages and sinuses, helping to identify any issues.

44 services39 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

42 services42 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

31 services31 patients

Diagnostic exam of voice box using a flexible endoscope 31575

This procedure involves a doctor examining your voice box using a flexible endoscope, a thin tube with a light and camera. It's inserted through your nose or mouth to visualize your throat area. It helps detect any abnormalities in your voice box, ensuring optimal vocal health.

27 services26 patients

Removal of impacted ear wax 69210

Impacted ear wax removal is a safe procedure to clear blockages in the ear canal caused by hardened ear wax. A healthcare professional uses specialized tools or a gentle irrigation method to loosen and remove the wax, improving hearing and alleviating discomfort.

27 services27 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

19 services19 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

17 services17 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

16 services16 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

16 services16 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

12 services12 patients

Diagnostic exam of voice box using a flexible endoscope 31575

11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94305 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

$86.56 typical visit price

range $23.96 – $169.60

Typical copayment $21.64 (range $5.99 – $42.40)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Tristan Tham Yong Ren's NPI number?

The NPI number for Tristan Tham Yong Ren is 1225590979. It was assigned to this individual provider in the NPPES registry on April 2, 2019.

Where is Tristan Tham Yong Ren located?

Tristan Tham Yong Ren practices at 300 Pasteur Dr, Stanford, CA 94305. The listed phone number is (650) 723-4000.

What is Tristan Tham Yong Ren's specialty?

The primary specialty registered for this NPI is Otolaryngology with taxonomy code 207Y00000X.

Is Tristan Tham Yong Ren enrolled in Medicare?

Yes. Tristan Tham Yong Ren 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.

When was this NPI record last updated?

The NPPES record for Tristan Tham Yong Ren was last updated on October 11, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 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.