1. Home
  2. Directory
  3. California
  4. Monterey
  5. Surgery
  6. NPI Profile

STEVE SUNG-YUL CHANG MD
NPI 1639376064
Surgery in Monterey, CA

Active since June 29, 2007PECOS EnrolledAccepts Medicare Assignment
77.81/100
CMS Quality Rating
2 UPPER RAGSDALE DR, B230, MONTEREY, CA 93940(831) 649-0808(831) 649-8795 Get Directions Write a Review

NPPES record last updated: October 18, 2019. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Steve Sung-yul Chang Md NPPES

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

STEVE SUNG-YUL CHANG MD (NPI 1639376064) is an individual surgery provider in Monterey, California, licensed in California (A109993) and active in the NPI registry since June 2007. He is enrolled in Medicare PECOS and is a graduate of Northeastern Ohio University College Of Medicine (2007).

NPPES Registry Identity

NPI1639376064
Entity TypeIndividualMale
Primary Taxonomy208600000X
Provider Legal NameSTEVE SUNG-YUL CHANGCredential: MD
Location Address2 UPPER RAGSDALE DR, B230Monterey, CA 93940-5736
Mailing Address2 Upper Ragsdale Dr, Ste B230Monterey, CA 93940-7853 · (831) 649-1000
Phone(831) 649-0808
Fax(831) 649-8795
Sole ProprietorNo
Medical School CMSNortheastern Ohio University College Of MedicineGraduated 2007
Enumeration DateJune 29, 2007
Last NPPES UpdateOctober 18, 2019
✔ NPI 1639376064 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208600000X
License✔ Licensed in CA · A109993
Definition
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
2 UPPER RAGSDALE DR, Monterey, CA 93940
Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Steve Sung-yul 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 ID7012131816
PECOS Enrollment IDI20140618000808
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.

Medicare Billing Reassignments

2

Medicare enrollment records show Steve Chang reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Montage Medical Group
5.8 mi
Internal Medicine
275 THE CROSSROADS BLVD STE A
Carmel, CA 93923
  • Reassigned Medicare billing, California enrollment
  • 155 clinicians in this Medicare group
NPI 1770710709 (831) 658-3639
Emergency And Acute Care Medical Corporation
372 mi
Emergency Medicine
7901 FROST ST
San Diego, CA 92123
  • Reassigned Medicare billing, California enrollment
  • 1,437 clinicians in this Medicare group
NPI 1437103942 (858) 939-3400

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 10

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.
179 services112 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.
105 services105 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.
102 services94 patients
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
83 services39 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.
28 services28 patients
Repair of groin hernia using an endoscope 49650
This procedure involves the use of an endoscope, a thin tube with a camera, to repair a hernia in the groin area. The surgeon makes small incisions, inserts the endoscope, and uses special tools to fix the hernia. This minimally invasive technique often results in quicker recovery times.
22 services22 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 93940 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
$94.44 typical visit price
range $61.69 – $184.30
Typical copayment $23.61 (range $15.42 – $46.07)
Most-billed visit code 99203
Established Patient
$76.53 typical visit price
range $20.34 – $151.02
Typical copayment $19.13 (range $5.08 – $37.75)
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.

77.81/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality68.99
Promoting Interoperability100
Improvement Activities40
Cost57.04

Reported Quality Measures

Acute Otitis Externa (AOE): Systemic Antimicrobial Therapy - Avoidance of Inappropriate Use
Percentage of patients aged 2 years and older with a diagnosis of AOE who were not prescribed systemic antimicrobial therapy
100%1,352 patients
Closing the Referral Loop: Receipt of Specialist Report
Percentage of patients with referrals, regardless of age, for which the referring provider receives a report from the provider to whom the patient was referred
47%174 patients2/55-star benchmark: 95%
Documentation of Current Medications in the Medical Record
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.
84%1,638 patients2/55-star benchmark: 100%
e-Prescribing
At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.
89%82 patients4/55-star benchmark: 100%
Health Information Exchange
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…
54%100 patients3/55-star benchmark: 98%
Medication Reconciliation
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.
86%119 patients4/55-star benchmark: 100%
Patient-Specific Education
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.
100%208 patients5/55-star benchmark: 100%
Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan
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…
47%628 patients2/55-star benchmark: 97%
Preventive Care and Screening: Screening for Depression and Follow-Up Plan
Percentage of patients aged 12 years and older screened for depression on the date of the encounter using an age appropriate standardized depression screening tool AND if positive, a follow-up plan is documented on the date of the positive screen
44%520 patients2/55-star benchmark: 96%
Provide Patient Access
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…
76%208 patients4/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

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.

Ostomy skin barrier, solid 4 x 4 or equivalent, extended wear, without built-in convexity, each A4385
DME-Orthotic Devices · category DF010N
4 suppliers13 claims380 services$4.83 avg. paid by Medicare
Skin barrier, wipes or swabs, each A5120
DME-Orthotic Devices · category DF010N
3 suppliers11 claims405 services$0.23 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.

CENTRAL COAST HEAD & NECK SURDEONS A M C INC
Otolaryngology
2 UPPER RAGSDALE DR, STE B-270
MONTEREY, CA 93940
Monterey County (831) 657-0377
BETSY NOVOTNY CPNP
Nurse Practitioner (Pediatrics)
2 UPPER RAGSDALE DR, SUITE B210
MONTEREY, CA 93940
Monterey County (831) 333-0999
CYNTHIA FERNANDEZ MN, FNP- BC
Nurse Practitioner (Family)
2 UPPER RAGSDALE DR, SUITE B110- BUILDING B
MONTEREY, CA 93940
Monterey County (831) 647-3190
ROBIN ELIZABETH PROCTOR CRNP
Nurse Practitioner (Family)
2 UPPER RAGSDALE DR
MONTEREY, CA 93940
Monterey County (831) 649-7220
MEGAN SUZANNE O'NEILL PA-C
Physician Assistant (Medical)
2 UPPER RAGSDALE DR, SUITE B-200
MONTEREY, CA 93940
Monterey County (831) 375-6334
JODY LYNN WHITELOCK M.D.
Pediatrics
2 UPPER RAGSDALE DR
MONTEREY, CA 93940
Monterey County (831) 333-0999
DR. JENNIFER LYNN KEIR-GARZA
Otolaryngology
2 UPPER RAGSDALE DR, B230
MONTEREY, CA 93940
Monterey County (831) 649-0808
ASHLEE BLAINE DO
Psychiatry & Neurology (Psychiatry)
2 UPPER RAGSDALE DR
MONTEREY, CA 93940
Monterey County (831) 333-3040

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 Steve Chang's NPI number?

The NPI number for Steve Chang is 1639376064. It was assigned to this individual provider in the NPPES registry on June 29, 2007.

Where is Steve Chang located?

Steve Chang practices at 2 Upper Ragsdale Dr B230, Monterey, CA 93940. The listed phone number is (831) 649-0808.

What is Steve Chang's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is Steve Chang enrolled in Medicare?

Yes. Steve 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.

Which organizations bill Medicare for Steve Chang's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Steve Chang reassigns Medicare benefits to 2 organizations: Montage Medical Group (Carmel, CA) and Emergency And Acute Care Medical Corporation (San Diego, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Steve Chang's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Steve Chang was last updated on October 18, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.