Reginald Kai Mason, MD

Primary specialty

Surgery PhysicianTaxonomy code 208600000X

License

036169863 Issued in IL

Practice address

2 Saint Anthonys Way Ste 105
Alton, IL 62002-4580

Phone

(618) 465-2761

Fax

(618) 465-4750

NPI assigned

Apr 14, 2006

Last updated

Oct 20, 2025By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 3

Addresses

Medicare fee-for-service enrollment

Enrolled in VA, IL, NC, NM4 enrollments

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 4

Specialty

General Surgery

Education

Other, 1995

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

St Vincent HospitalGroup PAC ID 6608775135, 335 clinicians

Osf Multi-Specialty GroupGroup PAC ID 3678889789, 2,123 clinicians

Vidant Medical Group LLCGroup PAC ID 0345343893, 986 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Osf Saint Anthony's Health Center Hospital, Alton, IL, CCN 140052
• Christus St Vincent Regional Medical Center Hospital, Santa Fe, NM, CCN 320002

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: mreginald626972@christushealth.direct-ci.net
• Direct secure messaging: rmason104694@capefearvalley.direct-ci.com

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

• Osf Multi-Specialty Group

  • Internal Medicine Physician
  • Peoria, IL
  • NPI 1922445527
  Medicare reassignment Care Compare group NPD
• Vidant Medical Group LLC

  • Multi-Specialty Clinic/Center
  • Greenville, NC
  • NPI 1477648731
  Medicare reassignment Care Compare group NPD
• St Vincent Hospital

  dba CHRISTUS St. Vincent Pediatrics

  • Pediatrics Physician
  • Santa Fe, NM
  • NPI 1063367803
  Medicare reassignment Care Compare group
• Bon Secours Medical Group Richmond Specialty Care LLC

  • Cardiovascular Disease Physician
  • Richmond, VA
  • NPI 1477112225

  Surgery

  Medicare reassignment NPD
• Buchanan Health Care LLC

  • Specialist
  • Grundy, VA
  • NPI 1609808484
  Medicare reassignment NPD
• Dominion Health Medical Assoc.

  dba Sentora Halifax General Surgery

  • Ambulatory Surgical Clinic/Center
  • South Boston, VA
  • NPI 1255771770
  Medicare reassignment NPD
• Bon Secours Medical Group Richmond Specialty Care LLC

  dba Bon Secours Orthopedic Specialists

  • Durable Medical Equipment & Medical Supplies
  • Midlothian, VA
  • NPI 1841029287
  NPD
• Central PA Pharmacy LLC.

  dba patton pharmacy and v&s variety

  • Community/Retail Pharmacy
  • Patton, PA
  • NPI 1578541413
  NPD
• Dominion Health Medical Assoc

  dba Sentara Halifax Emergency Physicial

  • Emergency Care Clinic/Center
  • South Boston, VA
  • NPI 1134407570
  NPD
• Dominion Health Medical Assoc

  dba Sentara Cardiology Specialists

  • Cardiovascular Disease Physician
  • South Boston, VA
  • NPI 1356138879
  NPD
• St. Vincent Hospital

  dba CHRISTUS St. Vincent Adult and Family Care

  • Family Medicine Physician
  • Santa Fe, NM
  • NPI 1245438647
  NPD
• St. Vincent Hospital

  dba CHRISTUS St. Vincent Surgicalist Group

  • Surgery Physician
  • Santa Fe, NM
  • NPI 1871723130
  NPD

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

• Osf Healthcare System

  dba Osf Saint Anthony's Health Center

  • General Acute Care Hospital
  • Alton, IL
  • NPI 1710396932
  Care Compare affiliation
• St Vincent Hospital

  dba CHRISTUS St. Vincent Regional Medical Center

  • General Acute Care Hospital
  • Santa Fe, NM
  • NPI 1578587150
  Care Compare affiliation

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

{
    "created_epoch": "1144972800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1760918400000",
    "number": "1699739607",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 1187",
            "city": "DUNNSVILLE",
            "state": "VA",
            "postal_code": "224541187",
            "telephone_number": "804-445-4643"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2 SAINT ANTHONYS WAY STE 105",
            "city": "ALTON",
            "state": "IL",
            "postal_code": "620024580",
            "telephone_number": "618-465-2761",
            "fax_number": "618-465-4750"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "500 Academy St S",
            "address_purpose": "LOCATION",
            "city": "Ahoskie",
            "state": "NC",
            "postal_code": "279103248",
            "country_code": "US",
            "telephone_number": "804-445-4643",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MASON",
        "first_name": "REGINALD",
        "middle_name": "KAI",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-04-14",
        "last_updated": "2025-10-20",
        "certification_date": "2025-10-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "VA",
            "license": "0101236379",
            "primary": false
        },
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "IL",
            "license": "036169863",
            "primary": true
        },
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "NC",
            "license": "2021-03370",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• India Martin, BS
• Kayla Martin
• Elnora Martinez, BS
• Paolo Masetti, MD
• Harley Annabelle Mason, MSW,LSW
• Frank Matlock, LCSW
• Christina Marie Maxwell, LPC, LCPC
• Paris Maxwell, BA
• Janet May
• Ralph Barnett Mayfield, PT

• Surgery Physician in Alton, IL
• Providers in Alton, IL by specialty
• Surgery Physician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 20, 2025; 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.