DR. JOHN MICHAEL MASTERSON MD
NPI 1043773732
Urology in New Castle, DE
About Dr. John Michael Masterson Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN MICHAEL MASTERSON MD (NPI 1043773732) is an individual urology provider in New Castle, Delaware, licensed in Delaware (C1-0028061) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS, is affiliated with Chester County Hospital, and is a graduate of University Of Miami, Lm Miller School Of Medicine (2019).
NPPES Registry Identity
Specialties & Licenses
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
Dr. John Michael Masterson 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 John Masterson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New Castle, DE 19720
- Reassigned Medicare billing, Delaware enrollment
- 15 clinicians in this Medicare group
Newark, DE 19713
- Reassigned Medicare billing, Delaware enrollment
- 1,531 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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Chester County Hospital
Acute Care Hospitals · West Chester, PAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 19720 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 17
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 John Masterson's NPI number?
The NPI number for John Masterson is 1043773732. It was assigned to this individual provider in the NPPES registry on April 9, 2019.
Where is John Masterson located?
John Masterson practices at 12 Reads Way Ste 2000, New Castle, DE 19720. The listed phone number is (302) 652-8990.
What is John Masterson's specialty?
The primary specialty registered for this NPI is Urology with taxonomy code 208800000X.
Is John Masterson enrolled in Medicare?
Yes. John Masterson 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 John Masterson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Masterson reassigns Medicare benefits to 2 organizations: Brandywine Urology Consultants PA (New Castle, DE) and Christiana Care Health Services Inc (Newark, DE). 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 John Masterson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Masterson accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and Highmark Blue Cross Blue Shield Delaware list John Masterson 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 John Masterson affiliated with any hospitals?
According to CMS data, John Masterson is affiliated with Chester County Hospital.
When was this NPI record last updated?
The NPPES record for John Masterson was last updated on February 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Dr. John Michael Masterson, MD · NPI 1043773732
Urology physician in New Castle, Delaware. Individual provider, active in the CMS NPPES registry since April 9, 2019.
## Identity
- **NPI:** 1043773732 (Entity type: Individual)
- **Enumerated:** April 9, 2019
- **Primary specialty:** Urology · taxonomy 208800000X
- **State license:** C1-0028061 (Delaware)
- **Sole proprietor:** No
## Practice location
- **Address:** 12 READS WAY STE 2000, New Castle, DE 19720-1649
- **Phone:** (302) 652-8990
## 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): Brandywine Urology Consultants PA (NPI 1932132248, New Castle, DE); Christiana Care Health Services Inc (NPI 1922078476, Newark, DE) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Miami, Lm Miller School Of Medicine, class of 2019
## Record status
- **NPPES last updated:** February 27, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1043773732) · Data from the CMS NPPES public registry.