MICHAEL TZEN-JEH CHANG MD
NPI 1720432016
Otolaryngology in Stanford, CA

Q: What is Michael Chang's NPI number?

The NPI number for Michael Chang is 1720432016. It was assigned to this individual provider in the NPPES registry on April 22, 2016.

Q: What is Michael Chang's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Michael Chang was last updated on April 28, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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 April 22, 2016PECOS EnrolledAccepts Medicare Assignment

76.5/100

CMS Quality Rating

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

NPPES record last updated: April 28, 2024. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Apr 28, 2024, Jul 1, 2021 (2 updates tracked since 2021).

On this page

About Michael Tzen-jeh Chang Md NPPES

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

MICHAEL TZEN-JEH CHANG MD (NPI 1720432016) is an individual otolaryngology provider in Stanford, California, licensed in California (A152394) and active in the NPI registry since April 2016. He is enrolled in Medicare PECOS, maintains a secondary practice location in Stanford, and is a graduate of Other (2016).

NPPES Registry Identity

NPI1720432016

Entity TypeIndividualMale

Primary Taxonomy207Y00000X

Provider Legal NameMICHAEL TZEN-JEH CHANGCredential: MD

Location Address300 PASTEUR DRStanford, CA 94305-2200

Mailing Address300 Pasteur DrStanford, CA 94305-2200

Phone(650) 723-4000

Sole ProprietorNo

Medical School CMSOtherGraduated 2016

Enumeration DateApril 22, 2016

Last NPPES UpdateApril 28, 20242 updates tracked since enumeration

NPPES CertifiedApril 28, 2024

✔ NPI 1720432016 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOtolaryngologyAllopathic & Osteopathic Physicians

Taxonomy Code207Y00000X

License✔ Licensed in CA · A152394

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

Open in Google Maps ↗

Secondary Practice Location 1

Location 1801 Welch RdStanford, CA 94305-5739 · Phone (650) 725-6500

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

Michael Tzen-jeh Chang 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 ID8224446612

PECOS Enrollment IDI20210423001852

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 16

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.

99 services79 patients

Biopsy or removal of nasal polyp or tissue using an endoscope 31237

A nasal biopsy or polyp removal is a procedure where an endoscope, a thin tube with a light and camera, is inserted into the nose. This allows the doctor to see and remove abnormal tissues or polyps, which are small growths. This procedure helps diagnose or treat nasal issues.

60 services39 patients

Diagnostic exam of nasal passages using an endoscope 31231

46 services41 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.

33 services33 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.

23 services21 patients

Biopsy or removal of nasal polyp or tissue using an endoscope 31237

20 services16 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.

20 services20 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.

15 services13 patients

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

14 services13 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.

14 services13 patients

Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221

Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.

14 services14 patients

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

13 services13 patients

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

13 services13 patients

Removal of nasal sinus tissue using an endoscope 31267

This procedure, known as endoscopic sinus surgery, involves using a thin, flexible tube with a light and camera to view and remove problematic nasal sinus tissue. It helps to alleviate sinus issues and improve breathing.

12 services12 patients

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

12 services12 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

12 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.

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.

76.5/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

74.31

Promoting Interoperability

100

Improvement Activities

Cost

43.95

Referred Medical Equipment & Supplies CMS DME claims 2

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

Budesonide, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose form, up to 0.5 mg J7626

DME-Drugs Administered Through DME · category DG000N

7 suppliers17 claims1,140 services$0.76 avg. paid by Medicare

Pharmacy dispensing fee for inhalation drug(s); per 30 days Q0513

DME-Other DME · category DE000N

6 suppliers15 claims15 services$24.27 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 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 Michael Chang's NPI number?

The NPI number for Michael Chang is 1720432016. It was assigned to this individual provider in the NPPES registry on April 22, 2016.

Where is Michael Chang located?

Michael Chang practices at 300 Pasteur Dr, Stanford, CA 94305. The listed phone number is (650) 723-4000.

What is Michael Chang's specialty?

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

Is Michael Chang enrolled in Medicare?

Yes. Michael Chang 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 Michael Chang was last updated on April 28, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.