John Michael Masterson, MD

Primary specialty

Urology PhysicianTaxonomy code 208800000X

License

C1-0028061 Issued in DE

Practice address

12 Reads Way Ste 2000
New Castle, DE 19720-1649

Phone

(302) 652-8990

NPI assigned

Apr 9, 2019

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in DE

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Urology

Education

University of Miami, LM Miller School of Medicine, 2019

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Brandywine Urology Consultants PAGroup PAC ID 3577646884, 19 clinicians

Christiana Care Health Services IncGroup PAC ID 9739097569, 1,480 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Christiana Hospital Hospital, Newark, DE, CCN 080001
• Bayhealth Medical Center, Kent Campus Hospital, Dover, DE, CCN 080004

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Networks

• Healthfirst Medicare Network H3359
• Healthfirst Medicare Network H1722
• Healthfirst Medicare Network H9678
• Healthfirst Medicare Network H5989

Interoperability endpoints

• FHIR API: https://api.platform.athenahealth.com/16405/brand/1/csg/1/fhir/r4
• Direct secure messaging: john.masterson.1@16405.direct.athenahealth.com
• Direct secure messaging: jmasterson4559152@direct.trinity-health.org

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Brandywine Urology Consultants PA

  • Urology Physician
  • New Castle, DE
  • NPI 1932132248
  Medicare reassignment Care Compare group NPD
• Christiana Care Health Services, Inc

  • Endocrinology, Diabetes & Metabolism Physician
  • Wilmington, DE
  • NPI 1770568107
  Medicare reassignment Care Compare group

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Bayhealth Medical Center, Inc.

  • General Acute Care Hospital
  • Dover, DE
  • NPI 1467546135
  Care Compare affiliation
• Christiana Care Health Services, Inc.

  • General Acute Care Hospital
  • Wilmington, DE
  • NPI 1134194038
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1554768000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1772150400000",
    "number": "1043773732",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "12 READS WAY STE 2000",
            "city": "NEW CASTLE",
            "state": "DE",
            "postal_code": "197201649",
            "telephone_number": "302-652-8990",
            "fax_number": "302-652-8646"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "12 READS WAY STE 2000",
            "city": "NEW CASTLE",
            "state": "DE",
            "postal_code": "197201649",
            "telephone_number": "302-652-8990"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MASTERSON",
        "first_name": "JOHN",
        "middle_name": "MICHAEL",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-04-09",
        "last_updated": "2026-02-27",
        "certification_date": "2026-02-27",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208800000X",
            "taxonomy_group": "",
            "desc": "Urology",
            "state": "DE",
            "license": "C1-0028061",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Daimi Martinez
• Julie Marzano, MS, OTR/L
• Joyce Maske
• Sharanda Mason
• Celeste Massari
• Lois Matalavage, RPH
• Alexis Maxwell, CF-SLP
• Brittany Marie Mayes, DPT
• Meghan Mayes
• Steven A Mayo, CRNA

• Urology Physician in New Castle, DE
• Providers in New Castle, DE by specialty
• Urology Physician in Delaware

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 27, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.