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

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

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 and National Provider Directory roles.

• Osf Multi-Specialty Group

  • Internal Medicine Physician
  • Peoria, IL
  • NPI 1922445527

  IL

  Medicare reassignment Care Compare group NPD
• Vidant Medical Group LLC

  • Multi-Specialty Clinic/Center
  • Greenville, NC
  • NPI 1477648731

  NC

  Medicare reassignment Care Compare group NPD
• St Vincent Hospital

  • Pediatrics Physician
  • Santa Fe, NM
  • NPI 1063367803

  NM

  Medicare reassignment Care Compare group
• Bon Secours Medical Group Richmond Specialty Care LLC

  • Cardiovascular Disease Physician
  • Richmond, VA
  • NPI 1477112225

  Surgery, VA

  Medicare reassignment NPD
• Buchanan Health Care LLC

  • Specialist
  • Grundy, VA
  • NPI 1609808484

  VA

  Medicare reassignment NPD
• Dominion Health Medical Assoc.

  • Ambulatory Surgical Clinic/Center
  • South Boston, VA
  • NPI 1255771770

  VA

  Medicare reassignment NPD
• St. Vincent Hospital

  • Family Medicine Physician
  • Santa Fe, NM
  • NPI 1245438647
  Care Compare group NPD
• St Vincent Hospital

  • Community/Retail Pharmacy
  • Santa Fe, NM
  • NPI 1144689514
  Care Compare group
• St Vincent Hospital

  • Sleep Medicine (Psychiatry & Neurology) Physician
  • Santa Fe, NM
  • NPI 1508403528
  Care Compare group
• St Vincent Hospital

  • General Acute Care Hospital
  • Santa Fe, NM
  • NPI 1578587150
  Care Compare group
• St. Vincent Hospital

  • Psychiatric Hospital Unit
  • Santa Fe, NM
  • NPI 1154477941
  Care Compare group
• St. Vincent Hospital

  • Specialty Pharmacy
  • Santa Fe, NM
  • NPI 1366980427
  Care Compare group

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

• Osf Healthcare System

  • General Acute Care Hospital
  • Alton, IL
  • NPI 1710396932

  Hospital

  Care Compare affiliation
• St Vincent Hospital

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

  Hospital

  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": []
}

• Clifford Glenn Martin, M.D.
• 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

• All providers in Alton, IL
• 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.