STEVE WON-TZE CHANG MD
NPI 1154501294
Neurological Surgery in Chandler, AZ

NPI Status: Active since November 06, 2007

Contact Information

1875 W FRYE RD STE 300
CHANDLER, AZ
ZIP 85224
Phone: (602) 406-3112
Fax: (602) 406-4187

NPI Profile Information
Primary Taxonomy
Insurance Plans Accepted
Secondary Locations
Medicare Participation & PECOS Status
Areas of Expertise
Durable Medical Equipment
Physician Visit Costs
Quality Reporting
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Male
Years of Experience 24
Neurological Surgery
Accepts Insurance
Accepts Medicare Approved Payment
PECOS Enrolled
Medicare Quality Reporting

About STEVE CHANG

This page provides the complete NPI Profile along with additional information for Steve Chang, a provider established in Chandler, Arizona with a medical specialization in Neurological Surgery and more than 24 years of experience. He graduated from University Of North Carolina At Chapel Hill School Of Medicine in 2002. The healthcare provider is registered in the NPI registry with number 1154501294 assigned on November 2007. The practitioner's primary taxonomy code is 207T00000X with license number 42069 (AZ). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI: 1154501294
Provider Name: STEVE WON-TZE CHANG MD
Gender: Male
Entity Type: Individual
Location Address: 1875 W FRYE RD STE 300 CHANDLER, AZ 85224
Location Phone: (602) 406-3112
Location Fax: (602) 406-4187
Mailing Address: 2910 N 3RD AVE # 200 PHOENIX, AZ 85013
Mailing Phone: (602) 406-3112
Mailing Fax: (602) 406-4187
Medical School Name: UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL SCHOOL OF MEDICINE
Graduation Year: 2002
Is Sole Proprietor?: No
Enumeration Date: 11-06-2007
Last Update Date: 05-08-2025
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Location Map

Secondary Locations

2910 N 3rd Ave
Phoenix, AZ 85013
(602) 406-3112

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification: Neurological Surgery
Taxonomy Code: 207T00000X
Type: Allopathic & Osteopathic Physicians
License No.: 42069
License State: AZ
Taxonomy Description: A neurological surgeon provides the operative and non-operative management (i.e., prevention, diagnosis, evaluation, treatment, critical care, and rehabilitation) of disorders of the central, peripheral, and autonomic nervous systems, including their supporting structures and vascular supply; the evaluation and treatment of pathological processes which modify function or activity of the nervous system; and the operative and non-operative management of pain. A neurological surgeon treats patients with disorders of the nervous system; disorders of the brain, meninges, skull, and their blood supply, including the extracranial carotid and vertebral arteries; disorders of the pituitary gland; disorders of the spinal cord, meninges, and vertebral column, including those which may require treatment by spinal fusion or instrumentation; and disorders of the cranial and spinal nerves throughout their distribution.

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

Blue Cross Blue Shield of Arizona

AZ Blue AdvanceHealth Bronze Focus (4 Free PCP Visits) - HMO
AZ Blue AdvanceHealth Bronze Neighborhood (4 Free PCP Visits) - HMO
AZ Blue AdvanceHealth Gold Focus (4 Free PCP Visits) - HMO
AZ Blue AdvanceHealth Gold Neighborhood (4 Free PCP Visits) - HMO
AZ Blue AdvanceHealth Silver Focus (4 Free PCP Visits) - HMO
AZ Blue AdvanceHealth Silver Neighborhood (4 Free PCP Visits) - HMO
AZ Blue EverydayHealth Gold Focus (1 Free PCP Visit) - HMO
AZ Blue EverydayHealth Gold Neighborhood (1 Free PCP Visit) - HMO
AZ Blue EverydayHealth Silver Focus (1 Free PCP Visit) - HMO
AZ Blue EverydayHealth Silver Neighborhood (1 Free PCP Visit) - HMO
AZ Blue Portfolio Bronze HSA Focus - HMO
AZ Blue Portfolio Bronze HSA Neighborhood - HMO
AZ Blue StandardHealth Bronze Focus - HMO
AZ Blue StandardHealth Bronze Neighborhood - HMO
AZ Blue StandardHealth Gold Focus - HMO
AZ Blue StandardHealth Gold Neighborhood - HMO
AZ Blue StandardHealth Silver Focus - HMO
AZ Blue StandardHealth Silver Neighborhood - HMO

Medicare

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Medicaid

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier	Type / Code	Identifier State	Identifier Issuer
434630	MEDICAID (05)	AZ

Medicare Participation & PECOS Enrollment Status

Steve Chang is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.

Steve Chang is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

Is the provider registered in PECOS? Yes
PECOS PAC ID: 9133271729
What is the PECOS Associate Control ID?
A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.
PECOS Enrollment ID: I20090713000190
What is the Provider Enrollment ID?
The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.
Accepts Medicare Assignment? Yes
What does it mean "accepts medicare assignment"?
When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.
Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes
Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes
Eligible to Order or Refer a Home Health Agency (HHA): Yes
Eligible to Order or Refer Power Mobility Devices: Yes

Provider Referred Orders for Durable Medical Equipment, Devices & Supplies

The following list reflects the services, supplies or durable medical equipment ordered by this provider to a DME supplier on behalf of patients. The information below is derived from Medicare claims data and reflects the BETOS category, HCPCS code information and the number times each service was submitted under the Medicare fee-for-service program.

Orthotic Devices

DME-Orthotic Devices (DF000N)
Cervical, collar, semi-rigid, thermoplastic foam, two piece with thoracic extension, prefabricated, off-the-shelf (HCPCS:L0174)
1 DME suppliers used 12 Medicare Claims 12 Services Paid

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Established patient office or other outpatient visit, 20-29 minutes
Established patient office or other outpatient visit, 30-39 minutes
Follow-up hospital inpatient care per day, typically 25 minutes
Fusion of additional segment of spine
Fusion of lower spine bone through abdomen with partial removal of disc
Fusion of upper spine bone with removal of disc and release of spinal cord or nerve, 1 disc
Initial hospital inpatient care per day, typically 30 minutes
Insertion of cage or mesh device to spine bone and disc space during spine fusion
Laminectomy or laminotomy (partial removal of spine bones)
New patient office or other outpatient visit, 30-44 minutes
New patient office or other outpatient visit, 45-59 minutes
Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment
Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment
Placement of stabilizing device to back, 3-6 spine bone segments
Spinal fusion

Physician Visit Costs

The typical physician office visit costs for Medicare beneficiaries in this area are: $31.92 for a new patient copayment and $17.31 for an established patient copayment.

The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.

For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.

The prices below reflect the costs for new and established patients in the 85224 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99204

Average New Patient Price $127.71
Minimum New Patient Price $55.44
Maximum New Patient Price $168.6

Average New Patient Copayment $31.92
Minimum New Patient Copayment $13.86
Maximum New Patient Copayment $42.15

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99213

Average Established Patient Price $69.24
Minimum Established Patient Price $17.72
Maximum Established Patient Price $137.41

Average Established Patient Copayment $17.31
Minimum Established Patient Copayment $4.43
Maximum Established Patient Copayment $34.35

* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.

Quality Reporting

The provider participated in CMS Quality Payment Program. The Quality Payment Program aims to improve population health, reduce costs and improve the care received by Medicare beneficiaries. The following quality measures meet Medicare's statistical reporting standards. Not all providers report the same information, because not all providers give the same services to patients. The quality information is just a snapshot of some the care providers give to their patients. Reporting more or less information is not a reflection of quality.

Quality Measure	Performance	Number of Patients
Annual registration in the Prescription Drug Monitoring Program	Yes	N/A
Annual registration by eligible clinician or group in the prescription drug monitoring program of the state where they practice. Activities that simply involve registration are not sufficient. MIPS eligible clinicians and groups must participate for a minimum of 6 months.
Documentation of Current Medications in the Medical Record	86%	1196
Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter. This list must include ALL known prescriptions, over-the-counters, herbals, and vitamin/mineral/dietary (nutritional) supplements AND must contain the medications' name, dosage, frequency and route of administration
Engagement of patients through implementation of improvements in patient portal	Yes	N/A
Access to an enhanced patient portal that provides up to date information related to relevant chronic disease health or blood pressure control, and includes interactive features allowing patients to enter health information and/or enables bidirectional communication about medication changes and adherence.
e-Prescribing	69%	26
At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.
Falls: Screening for Future Fall Risk	84%	309
Percentage of patients 65 years of age and older who were screened for future fall risk during the measurement period
Health Information Exchange	1%	500
The MIPS eligible clinician that transitions or refers their patient to another setting of care or health care clinician (1) uses CEHRT to create a summary of care record; and (2) electronically transmits such summary to a receiving health care clinician for at least one transition of care or referral.
Implementation of fall screening and assessment programs	Yes	N/A
Implementation of fall screening and assessment programs to identify patients at risk for falls and address modifiable risk factors (e.g., Clinical decision support/prompts in the electronic health record that help manage the use of medications, such as benzodiazepines, that increase fall risk).
Medication Reconciliation	98%	624
The MIPS eligible clinician performs medication reconciliation for at least one transition of care in which the patient is transitioned into the care of the MIPS eligible clinician.
Patient-Specific Education	79%	848
The MIPS eligible clinician must use clinically relevant information from CEHRT to identify patient-specific educational resources and provide access to those materials to at least one unique patient seen by the MIPS eligible clinician.
Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan	95%	702
Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous twelve months of the current encounter Normal Parameters: Age 18 years and older BMI >= 18.5 and < 25 kg/m2
Provide Patient Access	97%	848
At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold certain information.
Secure Messaging	39%	848
For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of CEHRT to the patient (or the patient-authorized representative), or in response to a secure message sent by the patient (or the patient-authorized representative) during the performance period.
Security Risk Analysis	Yes	N/A
Conduct or review a security risk analysis in accordance with the requirements in 45 CFR 164.308(a)(1), including addressing the security (to include encryption) of ePHI data created or maintained by certified EHR technology in accordance with requirements in 45 CFR164.312(a)(2)(iv) and 45 CFR 164.306(d)(3), and implement security updates as necessary and correct identified security deficiencies as part of the MIPS eligible clinician's risk management process.
Use of certified EHR to capture patient reported outcomes	Yes	N/A
In support of improving patient access, performing additional activities that enable capture of patient reported outcomes (e.g., home blood pressure, blood glucose logs, food diaries, at-risk health factors such as tobacco or alcohol use, etc.) or patient activation measures through use of certified EHR technology, containing this data in a separate queue for clinician recognition and review.
Use of High-Risk Medications in the Elderly	5% "Inverse Quality Measure" This is an inverse quality measure, a lower rate means the provider is rated better.	309
Percentage of patients 65 years of age and older who were ordered high-risk medications. Two rates are submitted. 1) Percentage of patients who were ordered at least one high-risk medication. 2) Percentage of patients who were ordered at least two of the same high-risk medication

NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1154501294, we treat the final digit (4) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 46. The final step is to find the difference between that total and the next multiple of ten (50 - 46 = 4).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 10 → 1 + 0

Pos 4

Unchanged

Pos 5

Doubled → 10 → 1 + 0

Pos 6

Unchanged

Pos 7

Doubled → 2

Pos 8

Unchanged

Pos 9

Doubled → 18 → 1 + 8

Check

Target digit

Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 5 → 10 → 1 5 → 10 → 1 1 → 2 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 1 + 1 + 0 + 4 + 1 + 0 + 0 + 2 + 2 + 1 + 8 + 24 = 46

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 46 is 50. The difference is the calculated check digit.

50 - 46 = 4

This NPI is valid

The calculated check digit is 4, which matches the last digit of 1154501294.