RONALD CHANG MD
NPI 1639411150
Surgery - Vascular Surgery in Pasadena, TX
About Ronald Chang Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RONALD CHANG MD (NPI 1639411150) is an individual vascular surgery provider in Pasadena, Texas, licensed in Texas (Q4571) and active in the NPI registry since March 2013. He is enrolled in Medicare PECOS, is affiliated with Ad Hospital East, Llc, and is a graduate of Washington University School Of Medicine (2013).
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
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
Ronald 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.
Medicare Billing Reassignments
2Medicare enrollment records show Ronald Chang reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Houston, TX 77027
- Reassigned Medicare billing, Texas enrollment
- 139 clinicians in this Medicare group
Houston, TX 77090
- Reassigned Medicare billing, Texas enrollment
- 32 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Ad Hospital East, LLC
Acute Care Hospitals · Houston, TXAltus Baytown Hospital
Acute Care Hospitals · Baytown, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 77504 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
PASADENA, TX 77504
PASADENA, TX 77504
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 Ronald Chang's NPI number?
The NPI number for Ronald Chang is 1639411150. It was assigned to this individual provider in the NPPES registry on March 22, 2013.
Where is Ronald Chang located?
Ronald Chang practices at 4301 Vista Rd, Pasadena, TX 77504. The listed phone number is (832) 781-0000.
What is Ronald Chang's specialty?
The primary specialty registered for this NPI is Surgery, specializing in Vascular Surgery, with taxonomy code 2086S0129X.
Is Ronald Chang enrolled in Medicare?
Yes. Ronald 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 Ronald Chang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ronald Chang reassigns Medicare benefits to 2 organizations: Advanced Surgeons & Physicians Network, Inc. (Houston, TX) and 1960 Physician Associates (Houston, TX). 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 Ronald Chang's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ronald Chang accept?
Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and Ambetter from Superior HealthPlan and 4 other insurers list Ronald 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 Ronald Chang affiliated with any hospitals?
According to CMS data, Ronald Chang is affiliated with Ad Hospital East, LLC and Altus Baytown Hospital.
When was this NPI record last updated?
The NPPES record for Ronald Chang was last updated on October 6, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Ronald Chang, MD · NPI 1639411150
Vascular Surgery physician in Pasadena, Texas. Individual provider, active in the CMS NPPES registry since March 22, 2013.
## Identity
- **NPI:** 1639411150 (Entity type: Individual)
- **Enumerated:** March 22, 2013
- **Primary specialty:** Surgery - Vascular Surgery · taxonomy 2086S0129X
- **State license:** Q4571 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 4301 VISTA RD, Pasadena, TX 77504-2117
- **Phone:** (832) 781-0000 · **Fax:** (832) 781-1000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Advanced Surgeons & Physicians Network, Inc. (NPI 1508030917, Houston, TX); 1960 Physician Associates (NPI 1215391941, Houston, TX) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Washington University School Of Medicine, class of 2013
## Record status
- **NPPES last updated:** October 6, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1639411150) · Data from the CMS NPPES public registry.