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DR. WESLEY JOHN CHANG M.D.
NPI 1174593453
Internal Medicine in Anaheim, CA

Active since January 26, 2006PECOS EnrolledCLIA 05D0863221 · Microscopy
14.55/100
CMS Quality Rating
6200 E CANYON RIM RD, STE 103A, ANAHEIM, CA 92807(714) 974-8130(714) 974-6811 Get Directions Write a Review

NPPES record last updated: April 27, 2017. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Wesley John Chang M.d. NPPES

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

DR. WESLEY JOHN CHANG M.D. (NPI 1174593453) is an individual internal medicine provider in Anaheim, California, licensed in California (G44205) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS and holds a CLIA Microscopy certificate valid through August 31, 2026.

NPPES Registry Identity

NPI1174593453
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. WESLEY JOHN CHANGCredential: M.D.
Location Address6200 E CANYON RIM RD, STE 103AAnaheim, CA 92807-4313
Mailing Address6200 E Canyon Rim Rd, Ste 103aAnaheim, CA 92807-4313 · (714) 974-8130 · Fax (714) 974-6811
Phone(714) 974-8130
Fax(714) 974-6811
Sole ProprietorYes
Enumeration DateJanuary 26, 2006
Last NPPES UpdateApril 27, 2017
✔ NPI 1174593453 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · G44205
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.
6200 E CANYON RIM RD, Anaheim, CA 92807
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Other Identifiers 1

Medicare UPINA49582CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Wesley John Chang M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate for Provider-Performed Microscopy Procedures (PPMP) 05D0863221

Wesley J Chang, MD · Anaheim, CA
Active · expires Aug 31, 2026
CLIA Number05D0863221
Laboratory TypePhysician Office
Certificate Effective DateSeptember 1, 2024
Certificate Expiration DateAugust 31, 2026
Laboratory DirectorWesley J. Chang, MD
Laboratory Phone(714) 974-8130
Laboratory LocationWesley J Chang, MD6200 Canyon Rim Road #103a, Anaheim, CA 92807
CLIA data matches this NPI record on: Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.

Areas of Expertise CMS Part B claims 8

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.

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.
397 services167 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.
293 services124 patients
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.
168 services89 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
102 services102 patients
Influenza vaccine split virus, preservative free 90662
The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.
54 services54 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.
54 services54 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92807 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
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.

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.

14.55/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Individually scored
Quality0
Improvement Activities0
Cost48.5

Referred Medical Equipment & Supplies CMS DME claims 13

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
7 suppliers25 claims54 services$5.96 avg. paid by Medicare
Ostomy skin barrier, solid 4 x 4 or equivalent, extended wear, without built-in convexity, each A4385
DME-Orthotic Devices · category DF010N
1 supplier12 claims240 services$4.92 avg. paid by Medicare
Ostomy skin barrier, with flange (solid, flexible or accordion), without built-in convexity, 4 x 4 inches or smaller, each A4414
DME-Orthotic Devices · category DF010N
1 supplier12 claims130 services$4.76 avg. paid by Medicare
Adhesive remover, wipes, any type, each A4456
DME-Medical/Surgical Supplies · category DA000N
1 supplier12 claims600 services$0.23 avg. paid by Medicare
Tubing with integrated heating element for use with positive airway pressure device A4604
DME-Other DME · category DE001N
5 suppliers22 claims22 services$33.38 avg. paid by Medicare
Ostomy pouch, drainable; for use on barrier with flange (2 piece system), each A5063
DME-Orthotic Devices · category DF010N
1 supplier12 claims160 services$2.62 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 17

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

HARRY JOEL CHARM OD
Optometrist
6200 E CANYON RIM RD, STE 101
ANAHEIM HILLS, CA 92807
Orange County (714) 998-2020
ANAHEIM HILLS FAMILY OPTOMETRY INC
Optometrist
6200 E CANYON RIM RD, STE 101
ANAHEIM, CA 92807
Orange County (714) 998-2020
MR. GARY L ASTON PHYSICAL THERAPIST
Physical Therapist
6200 E CANYON RIM RD, SUITE 113
ANAHEIM, CA 92807
Orange County (714) 974-0330
DOCTORS OF CALIFORNIA INC
Clinic/Center (Primary Care)
6200 E CANYON RIM RD, STE 105B
ANAHEIM, CA 92807
Orange County (714) 998-3627
JACK GUTMAN DO PROFESSIONAL CORP
Clinic/Center (Primary Care)
6200 E CANYON RIM RD, STE 105B
ANAHEIM, CA 92807
Orange County (714) 998-3627
ANDO & ASTON PHYSICAL THERAPY, INC.
Physical Therapist
6200 E CANYON RIM RD, #113E
ANAHEIM HILLS, CA 92807
Orange County (714) 974-0330
JACK H GUTMAN D.O.
Family Medicine (Sports Medicine)
6200 E CANYON RIM RD, STE 105B
ANAHEIM, CA 92807
Orange County (714) 998-3627
MS. LAUREN ALLYSON TERRY M.A., LMFT
Marriage & Family Therapist
6200 E CANYON RIM RD, SUITE 212
ANAHEIM, CA 92807
Orange County (714) 202-4084

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 Wesley Chang's NPI number?

The NPI number for Wesley Chang is 1174593453. It was assigned to this individual provider in the NPPES registry on January 26, 2006.

Where is Wesley Chang located?

Wesley Chang practices at 6200 E Canyon Rim Rd Ste 103A, Anaheim, CA 92807. The listed phone number is (714) 974-8130.

What is Wesley Chang's specialty?

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

Is Wesley Chang enrolled in Medicare?

Yes. Wesley Chang is registered in the Medicare PECOS enrollment system.

Does Wesley Chang hold a CLIA laboratory certificate?

Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 05D0863221) is associated with this NPI, valid through August 31, 2026. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Wesley Chang was last updated on April 27, 2017. NPI Profile syncs with the weekly NPPES data releases published by CMS.