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CHARLES Y CHANG MD
NPI 1942436886
Urology in Concord, CA

Active since June 05, 2009PECOS EnrolledAccepts Medicare Assignment
2222 EAST ST STE 250, CONCORD, CA 94520(925) 609-7220 Get Directions Write a Review

NPPES record last updated: December 12, 2024. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Dec 12, 2024, Jul 5, 2022 (2 updates tracked since 2022).

About Charles Y Chang Md NPPES

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

CHARLES Y CHANG MD (NPI 1942436886) is an individual urology provider in Concord, California, licensed in California (C166684) and active in the NPI registry since June 2009. He is enrolled in Medicare PECOS and is a graduate of Other (2008).

NPPES Registry Identity

NPI1942436886
Entity TypeIndividualMale
Primary Taxonomy208800000X
Provider Legal NameCHARLES Y CHANGCredential: MD
Location Address2222 EAST ST STE 250Concord, CA 94520-2096
Mailing Address1450 Treat Blvd Ste 300Walnut Creek, CA 94597-2168 · (925) 952-2828
Phone(925) 609-7220
Sole ProprietorNo
Medical School CMSOtherGraduated 2008
Enumeration DateJune 5, 2009
Last NPPES UpdateDecember 12, 20242 updates tracked since enumeration
NPPES CertifiedDecember 12, 2024
✔ NPI 1942436886 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyUrologyAllopathic & Osteopathic Physicians
Taxonomy Code208800000X
Licenses✔ Licensed in CA · C166684✔ Licensed in WA · MD60462997✔ Licensed in IL · 125054599✔ Licensed in NY · 314844
Definition
A urologist manages benign and malignant medical and surgical disorders of the genitourinary system and the adrenal gland. This specialist has comprehensive knowledge of and skills in endoscopic, percutaneous and open surgery of congenital and acquired conditions of the urinary and reproductive systems and their contiguous structures.
2222 EAST ST STE 250, Concord, CA 94520
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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

Charles Y 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 ID1850510207
PECOS Enrollment IDI20241219002098
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 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.

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 services14 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.
13 services12 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94520 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
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
Established Patient
$84.91 typical visit price
range $23.44 – $166.46
Typical copayment $21.22 (range $5.86 – $41.61)
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.

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.

Intermittent urinary catheter; straight tip, with or without coating (teflon, silicone, silicone elastomer, or hydrophilic, etc.), each A4351
DME-Orthotic Devices · category DF008N
3 suppliers56 claims6,000 services$1.61 avg. paid by Medicare
Intermittent urinary catheter; coude (curved) tip, with or without coating (teflon, silicone, silicone elastomeric, or hydrophilic, etc.), each A4352
DME-Orthotic Devices · category DF008N
1 supplier11 claims810 services$6.25 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 3

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

JESSE DINH LE M.D.
Urology
2222 EAST ST STE 250
CONCORD, CA 94520
Contra Costa County (925) 609-7220
KATHY NGUYEN FNP
Nurse Practitioner (Family)
2222 EAST ST STE 250
CONCORD, CA 94520
Contra Costa County (925) 609-7220
DR. WEI ZHENG M.D.
Urology
2222 EAST ST STE 250
CONCORD, CA 94520
Contra Costa County (925) 609-7220

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 Charles Chang's NPI number?

The NPI number for Charles Chang is 1942436886. It was assigned to this individual provider in the NPPES registry on June 5, 2009.

Where is Charles Chang located?

Charles Chang practices at 2222 East St Ste 250, Concord, CA 94520. The listed phone number is (925) 609-7220.

What is Charles Chang's specialty?

The primary specialty registered for this NPI is Urology with taxonomy code 208800000X.

Is Charles Chang enrolled in Medicare?

Yes. Charles 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 Charles Chang was last updated on December 12, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 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.