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DR. REGINALD KAI MASON MD
NPI 1699739607
Surgery in Alton, IL

Active since April 14, 2006PECOS EnrolledAccepts Medicare Assignment
2 SAINT ANTHONYS WAY STE 105, ALTON, IL 62002(618) 465-2761(618) 465-4750 Get Directions Write a Review

NPPES record last updated: October 20, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: May 2, 2024, Apr 22, 2022 (2 updates tracked since 2022).

About Dr. Reginald Kai Mason Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. REGINALD KAI MASON MD (NPI 1699739607) is an individual surgery provider in Alton, Illinois, licensed in Illinois (036169863) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, is affiliated with Osf Saint Anthony's Health Center, and is a graduate of Other (1995).

NPPES Registry Identity

NPI1699739607
Entity TypeIndividualMale
Primary Taxonomy208600000X
Provider Legal NameDR. REGINALD KAI MASONCredential: MD
Location Address2 SAINT ANTHONYS WAY STE 105Alton, IL 62002-4580
Mailing AddressPo Box 1187Dunnsville, VA 22454-1187 · (804) 445-4643
Phone(618) 465-2761
Fax(618) 465-4750
Sole ProprietorNo
Medical School CMSOtherGraduated 1995
Enumeration DateApril 14, 2006
Last NPPES UpdateOctober 20, 20252 updates tracked since enumeration
NPPES CertifiedOctober 20, 2025
✔ NPI 1699739607 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208600000X
Licenses✔ Licensed in IL · 036169863✔ Licensed in VA · 0101236379✔ Licensed in NC · 2021-03370
Definition
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
2 SAINT ANTHONYS WAY STE 105, Alton, IL 62002
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Medica.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Reginald Kai Mason 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.

PECOS PAC ID2365411873
PECOS Enrollment IDI20240605001765, I20250828004858, I20260122004273
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 6

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239
This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.
22 services22 patients
Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385
This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.
20 services20 patients
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
18 services12 patients
Biopsy of large bowel using a flexible endoscope 45380
A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.
15 services15 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
15 services14 patients
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221
Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.
13 services13 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Osf Saint Anthony's Health Center

Acute Care Hospitals · Alton, IL
2/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number140052
LocationSt Anthony's WayAlton, IL 62002 · Madison County

Christus St Vincent Regional Medical Center

Acute Care Hospitals · Santa Fe, NM
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number320002
Location455 St Michael's DriveSanta Fe, NM 87505 · Santa Fe County
Emergency services Birthing friendly

Vidant Roanoke Chowan Hospital

Acute Care Hospitals · Ahoskie, NC
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number340099
Location500 S Academy StAhoskie, NC 27910 · Hertford County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 62002 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$88.44 typical visit price
range $56.28 – $173.35
Typical copayment $22.11 (range $14.07 – $43.33)
Most-billed visit code 99203
Established Patient
$70.42 typical visit price
range $17.51 – $139.99
Typical copayment $17.60 (range $4.37 – $34.99)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KHALID NASEER MD
Internal Medicine (Gastroenterology)
2 SAINT ANTHONYS WAY STE 105
ALTON, IL 62002
Madison County (618) 465-2761

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 Reginald Mason's NPI number?

The NPI number for Reginald Mason is 1699739607. It was assigned to this individual provider in the NPPES registry on April 14, 2006.

Where is Reginald Mason located?

Reginald Mason practices at 2 Saint Anthonys Way Ste 105, Alton, IL 62002. The listed phone number is (618) 465-2761.

What is Reginald Mason's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is Reginald Mason enrolled in Medicare?

Yes. Reginald Mason 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.

What insurance does Reginald Mason accept?

Health plans from Medica list Reginald Mason 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 Reginald Mason affiliated with any hospitals?

According to CMS data, Reginald Mason is affiliated with Osf Saint Anthony's Health Center, Christus St Vincent Regional Medical Center and Vidant Roanoke Chowan Hospital.

When was this NPI record last updated?

The NPPES record for Reginald Mason was last updated on October 20, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.