TONY S CHANG MD
NPI 1831166990
Internal Medicine in Madison, WI

Q: What is Tony Chang's NPI number?

The NPI number for Tony Chang is 1831166990. It was assigned to this individual provider in the NPPES registry on March 7, 2006.

Q: What is Tony Chang's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Tony Chang was last updated on January 4, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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 March 07, 2006PECOS EnrolledAccepts Medicare Assignment

20 S PARK ST, SUITE 405B, MADISON, WI 53715(608) 287-2440(608) 287-2438 Get Directions Write a Review

NPPES record last updated: January 4, 2021. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Tony S Chang Md NPPES

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

TONY S CHANG MD (NPI 1831166990) is an individual internal medicine provider in Madison, Wisconsin, licensed in Wisconsin (42048) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS, is affiliated with Unitypoint Health - Meriter, and is a graduate of University Of Wisconsin School Of Medicine (1995).

NPPES Registry Identity

NPI1831166990

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameTONY S CHANGCredential: MD

Location Address20 S PARK ST, SUITE 405BMadison, WI 53715

Mailing Address7974 Uw Health CtMiddleton, WI 53562-5531 · (608) 829-5485

Phone(608) 287-2440

Fax(608) 287-2438

Sole ProprietorNo

Medical School CMSUniversity Of Wisconsin School Of MedicineGraduated 1995

Enumeration DateMarch 7, 2006

Last NPPES UpdateJanuary 4, 2021

NPPES CertifiedJanuary 4, 2021

✔ NPI 1831166990 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in WI · 42048

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.

20 S PARK ST, Madison, WI 53715

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Aspirus Health Plan, Group Health Cooperative-SCW and more.Insurance ›

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

Tony S 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 ID3476683954

PECOS Enrollment IDI20100609000827

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 9

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.

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

242 services151 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.

160 services135 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.

103 services86 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.

87 services77 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

32 services32 patients

Influenza vaccine, inactivated 90653

The Influenza vaccine, inactivated, is a shot given to protect against the flu. It contains killed virus particles that help your body build immunity to the flu. It's recommended annually to keep your protection up-to-date. It's safe for ages 6 months and up.

27 services27 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Unitypoint Health - Meriter

Acute Care Hospitals · Madison, WI

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number520089

Location202 S Park StMadison, WI 53715 · Dane County

Emergency services Birthing friendly

University Of Wi Hospitals & Clinics Authority

Acute Care Hospitals · Madison, WI

4/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number520098

Location600 Highland AvenueMadison, WI 53792 · Dane County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 53715 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

$123.69 typical visit price

range $53.90 – $163.24

Typical copayment $30.92 (range $13.47 – $40.81)

Most-billed visit code 99204

Established Patient

$95.41 typical visit price

range $17.40 – $133.76

Typical copayment $23.85 (range $4.35 – $33.44)

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 12

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

12 suppliers23 claims71 services$5.86 avg. paid by Medicare

Tubing with integrated heating element for use with positive airway pressure device A4604

DME-Other DME · category DE001N

1 supplier22 claims22 services$35.19 avg. paid by Medicare

Pillow for use on nasal cannula type interface, replacement only, pair A7033

DME-Other DME · category DE001N

1 supplier11 claims66 services$12.91 avg. paid by Medicare

Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034

DME-Other DME · category DE001N

1 supplier18 claims18 services$57.44 avg. paid by Medicare

Headgear used with positive airway pressure device A7035

DME-Other DME · category DE001N

2 suppliers18 claims18 services$19.75 avg. paid by Medicare

Filter, disposable, used with positive airway pressure device A7038

DME-Other DME · category DE001N

2 suppliers22 claims132 services$1.97 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.

JEFFREY S BLAKESLEY DO

Psychiatry & Neurology (Neurology)

20 S PARK ST
MADISON, WI 53715

Dane County (608) 287-2090

ELIZA A. BENNETT M.D.

Obstetrics & Gynecology

20 S PARK ST, OB/GYN CLINIC
MADISON, WI 53715

Dane County (608) 287-2830

RANDY S HEIDEL MD

Internal Medicine

20 S PARK ST
MADISON, WI 53715

Dane County (608) 287-2250

ANGELA B. MORGAN PA-C

Physician Assistant (Medical)

20 S PARK ST
MADISON, WI 53715

Dane County (608) 287-2250

LUKE CHRISTOPHER ADDESSO MD

Pediatrics

20 S PARK ST
MADISON, WI 53715

Dane County (608) 287-2580

ELIZABETH RUSHING PA

Physician Assistant (Medical)

20 S PARK ST
MADISON, WI 53715

Dane County (608) 287-2090

DR. SONYA THOMPSON MD

Obstetrics & Gynecology

20 S PARK ST
MADISON, WI 53715

Dane County (608) 914-2200

SHANDA R WELLS PHD

Psychologist

20 S PARK ST
MADISON, WI 53715

Dane County (608) 287-2340

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 Tony Chang's NPI number?

The NPI number for Tony Chang is 1831166990. It was assigned to this individual provider in the NPPES registry on March 7, 2006.

Where is Tony Chang located?

Tony Chang practices at 20 S Park St Suite 405B, Madison, WI 53715. The listed phone number is (608) 287-2440.

What is Tony Chang's specialty?

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

Is Tony Chang enrolled in Medicare?

Yes. Tony 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.

What insurance does Tony Chang accept?

Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, Group Health Cooperative-SCW, HealthPartners and Quartz and 1 other insurer list Tony Chang as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Tony Chang affiliated with any hospitals?

According to CMS data, Tony Chang is affiliated with Unitypoint Health - Meriter and University Of Wi Hospitals & Clinics Authority.

When was this NPI record last updated?

The NPPES record for Tony Chang was last updated on January 4, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.