GATEWAY ENDOSCOPY CENTER
NPI 1821453796
Clinic/Center - Ambulatory Surgical in Saint Louis, MO

NPI Status: Active since December 21, 2015

Contact Information

12855 N 40 DR
SUITE 150
SAINT LOUIS, MO
ZIP 63141
Phone: (314) 336-1130
Fax: (314) 336-1136

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  • Organization
  • Clinic/Center
  • Ambulatory Surgical
  • Accepts Insurance

About GATEWAY ENDOSCOPY CENTER

This page provides the complete NPI Profile along with additional information for Gateway Endoscopy Center, a provider established in Saint Louis, Missouri operating as a Clinic/center, focusing in ambulatory surgical . The healthcare provider is registered in the NPI registry with number 1821453796 assigned on December 2015. The practitioner's primary taxonomy code is 261QA1903X. The provider is registered as an organization and their NPI record was last updated 2 years ago. The provider's is doing business as Gateway Endoscopy Center. The authorized official of this NPI record is Chris Hartshorn (Officer/authorized Official)

NPI
1821453796
Provider Legal Name
MASON RIDGE AMBULATORY SURGERY CENTER LP
Other Organization Name
GATEWAY ENDOSCOPY CENTER
Other Name Type
Doing Business As (3)
Entity Type
Organization
Location Address
12855 N 40 DR SUITE 150 SAINT LOUIS, MO 63141
Location Phone
(314) 336-1130
Location Fax
(314) 336-1136
Mailing Address
12855 N 40 DR SUITE 150 SAINT LOUIS, MO 63141
Mailing Phone
(314) 336-1130
Mailing Fax
(314) 336-1136
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
12-21-2015
Last Update Date
10-11-2024
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Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Clinic/Center Ambulatory Surgical

Taxonomy Code
261QA1903X
Type
Ambulatory Health Care Facilities

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

  • Choice Bronze HSA (QualChoice) - POS
  • Complete Gold - PPO
  • Complete Gold + Vision + Adult Dental - PPO
  • Connected Silver - PPO
  • Connected Silver (QualChoice) - POS
  • Connected Silver (QualChoice) + Vision + Adult Dental - POS
  • Connected Silver (QualChoiceLife) - PPO
  • Connected Silver (QualChoiceLife) + Vision + Adult Dental - PPO
  • Connected Silver + Vision + Adult Dental - PPO
  • Elite Bronze - PPO
  • Complete Gold - EPO
  • Complete Gold + Vision + Adult Dental - EPO
  • Complete Silver - EPO
  • Complete Silver + Vision + Adult Dental - EPO
  • Elite Bronze - EPO
  • Elite Bronze + Vision + Adult Dental - EPO
  • Everyday Bronze - EPO
  • Everyday Bronze + Vision + Adult Dental - EPO
  • Everyday Gold - EPO
  • Everyday Gold + Vision + Adult Dental - EPO
  • Elite Bronze - EPO
  • Elite Bronze + Vision + Adult Dental - EPO
  • Elite Gold - EPO
  • Elite Gold + Vision + Adult Dental - EPO
  • Everyday Bronze - EPO
  • Everyday Bronze + Vision + Adult Dental - EPO
  • Everyday Gold - EPO
  • Everyday Gold + Vision + Adult Dental - EPO
  • Focused Silver - EPO
  • Focused Silver + Vision + Adult Dental - EPO
  • Choice Bronze HSA - EPO
  • Choice Bronze HSA + Vision + Adult Dental - EPO
  • Clear Gold - EPO
  • Clear Gold + Vision + Adult Dental - EPO
  • Complete Gold - HMO
  • Complete Gold + Vision + Adult Dental - HMO
  • Elite Bronze - EPO
  • Elite Bronze - HMO
  • Elite Bronze + Vision + Adult Dental - EPO
  • Elite Bronze + Vision + Adult Dental - HMO
  • Clear Gold - EPO
  • Clear Gold + Vision + Adult Dental - EPO
  • Complete Gold - EPO
  • Complete Gold + Vision + Adult Dental - EPO
  • Elite Silver - EPO
  • Elite Silver + Vision + Adult Dental - EPO
  • Everyday Bronze - EPO
  • Everyday Bronze + Vision + Adult Dental - EPO
  • Focused Silver - EPO
  • Focused Silver + Vision + Adult Dental - EPO
  • Elite Bronze - PPO
  • Elite Bronze + Vision + Adult Dental - PPO
  • Elite Gold - PPO
  • Elite Gold + Vision + Adult Dental - PPO
  • Enhanced Asthma/COPD Care Silver with $0 Drug Options - PPO
  • Enhanced Asthma/COPD Care Silver with $0 Drug Options + Vision + Adult Dental - PPO
  • Enhanced Diabetes Care Silver with $0 Drug Options - PPO
  • Enhanced Diabetes Care Silver with $0 Drug Options + Vision + Adult Dental - PPO
  • Everyday Bronze - PPO
  • Everyday Bronze + Vision + Adult Dental - PPO
  • Elite Bronze - EPO
  • Elite Bronze + Vision + Adult Dental - EPO
  • Elite Gold - EPO
  • Elite Gold + Vision + Adult Dental - EPO
  • Enhanced Diabetes Care Silver with $0 Drug Options - EPO
  • Enhanced Diabetes Care Silver with $0 Drug Options + Vision + Adult Dental - EPO
  • Everyday Bronze - EPO
  • Everyday Bronze + Vision + Adult Dental - EPO
  • Everyday Gold - EPO
  • Everyday Gold + Vision + Adult Dental - EPO
  • Anthem Bronze Pathway 10150 ($0 Virtual PCP + $0 Select Drugs + Incentives) - EPO
  • Anthem Bronze Pathway 6900 ($0 Virtual PCP + $0 Select Drugs + Incentives) - EPO
  • Anthem Bronze Pathway 7500 Standard ($0 Virtual PCP + $0 Select Drugs + Incentives) - EPO
  • Anthem Catastrophic Pathway (+ Incentives) - EPO
  • Anthem Gold Pathway 2000 Standard ($0 Virtual PCP + $0 Select Drugs + Incentives) - EPO
  • Anthem Heart Healthy Bronze Pathway 4900 ($0 Virtual PCP + $0 Select Drugs + Incentives) - EPO
  • Anthem Heart Healthy Silver Pathway 3100 ($0 Virtual PCP + $0 Select Drugs + Incentives) - EPO
  • Anthem Silver Pathway 5350 ($0 Virtual PCP + $0 Select Drugs + Incentives) - EPO
  • Anthem Silver Pathway 6000 Standard ($0 Virtual PCP + $0 Select Drugs + Incentives) - EPO
  • Anthem Silver Pathway 7200 ($0 Virtual PCP + $0 Select Drugs + Incentives) - EPO
  • Bronze Classic 4700 - EPO
  • Bronze Classic Standard - EPO
  • Bronze Elite + PCP Saver Plus - EPO
  • Bronze Simple Diabetes - EPO
  • Gold Classic Standard - EPO
  • Gold Simple - EPO
  • Silver Classic Standard - EPO
  • Silver Elite Saver Plus - EPO
  • Silver Simple Diabetes - EPO
  • Silver Simple PCP Saver - EPO

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

CHRIS HARTSHORN

Authorized Official Title
OFFICER/AUTHORIZED OFFICIAL
Authorized Official Phone
(314) 800-2017

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm

This procedure involves using a flexible tube with a camera, called an endoscope, to gently expand narrowed areas in your esophagus, stomach, or upper small bowel. A small balloon is inflated, making it easier for food and liquid to pass through. It's safe and effective.

This service was performed 38 times for 36 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope

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.

This service was performed 195 times for 191 patients

Biopsy of large bowel using a flexible endoscope

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.

This service was performed 179 times for 179 patients

Colorectal cancer screening; colonoscopy on individual at high risk

Colorectal cancer screening, specifically a colonoscopy, is a preventive measure for those at high risk. A thin, flexible tube with a camera inspects the colon to spot any abnormal growths. This test helps detect potential issues early, enhancing the effectiveness of treatment.

This service was performed 234 times for 234 patients

Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk

Colorectal cancer screening, such as a colonoscopy, is a preventive measure to detect early signs of cancer in the large intestine. For individuals not at high risk, it's typically recommended at age 50. A small, flexible tube with a camera is used to examine your colon. It's a safe, effective way to catch issues early.

This service was performed 69 times for 69 patients

Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope

This procedure, known as an upper endoscopy, involves inserting a thin, flexible tube with a camera down the throat to examine the esophagus, stomach, and upper small bowel. It helps diagnose conditions like ulcers or inflammation.

This service was performed 22 times for 22 patients

Diagnostic exam of large bowel using a flexible endoscope

This procedure, known as a colonoscopy, involves using a flexible tube with a light and camera to examine the large intestine. It helps detect any abnormalities such as polyps or inflammation. It's a standard procedure to ensure gut health.

This service was performed 26 times for 26 patients

Dilation of esophagus

Dilation of the esophagus is a procedure aimed to stretch or open up your esophagus (the tube connecting your mouth to your stomach) when it's narrow. It helps to improve swallowing and alleviate discomfort. It's typically performed using a flexible tube or balloon, under sedation.

This service was performed 15 times for 15 patients

Injection beneath lining of large bowel using a flexible endoscope

This procedure involves a flexible tube, called an endoscope, being inserted into the large bowel. A small needle is then passed through the tube to inject medication under the bowel lining. This is typically done to treat inflammation or bleeding.

This service was performed 12 times for 12 patients

Removal of polyps or growths of large bowel using an endoscope with mechanical snare

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.

This service was performed 383 times for 381 patients

Reviews for GATEWAY ENDOSCOPY CENTER

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NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1821453796, we treat the final digit (6) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 74. The final step is to find the difference between that total and the next multiple of ten (80 - 74 = 6).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
8
Unchanged
Pos 3
2
Doubled → 4
Pos 4
1
Unchanged
Pos 5
4
Doubled → 8
Pos 6
5
Unchanged
Pos 7
3
Doubled → 6
Pos 8
7
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
6
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 2 → 4 4 → 8 3 → 6 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 8 + 4 + 1 + 8 + 5 + 6 + 7 + 1 + 8 + 24 = 74

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 74 is 80. The difference is the calculated check digit.

80 - 74 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1821453796.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Internal Medicine
12855 N 40 DR, SUITE 280
SAINT LOUIS, MO 63141
Internal Medicine (Hematology & Oncology)
12855 N 40 DR, SUITE 200
SAINT LOUIS, MO 63141
Internal Medicine (Hematology & Oncology)
12855 N 40 DR, SUITE 200
SAINT LOUIS, MO 63141
Clinical Nurse Specialist (Medical-Surgical)
12855 N 40 DR, SUITE 375
SAINT LOUIS, MO 63141
Clinic/Center (Ambulatory Surgical)
12855 N 40 DR, SUITE 150
SAINT LOUIS, MO 63141
Anesthesiology
12855 N 40 DR, SUITE 275
SAINT LOUIS, MO 63141
Internal Medicine (Gastroenterology)
12855 N 40 DR, SUITE 175
SAINT LOUIS, MO 63141
Dermatology (MOHS-Micrographic Surgery)
12855 N 40 DR, SUITE 180
SAINT LOUIS, MO 63141
Internal Medicine
12855 N 40 DR, SUITE 280
SAINT LOUIS, MO 63141
Pharmacist (Oncology)
12855 N 40 DR, SUITE 200
SAINT LOUIS, MO 63141
Clinical Medical Laboratory
12855 N 40 DR, STE 200
SAINT LOUIS, MO 63141
Nurse Practitioner (Adult Health)
12855 N 40 DR, SUITE 175
SAINT LOUIS, MO 63141
Internal Medicine
12855 N 40 DR, SUITE 280
SAINT LOUIS, MO 63141
Nurse Practitioner (Adult Health)
12855 N 40 DR, SUITE 200
SAINT LOUIS, MO 63141
Registered Nurse
12855 N 40 DR, SUITE 100
SAINT LOUIS, MO 63141
Registered Nurse (Registered Nurse First Assistant)
12855 N 40 DR, SUITE 100
SAINT LOUIS, MO 63141
Dietitian, Registered (Nutrition, Renal)
12855 N 40 DR, SUITE 205
SAINT LOUIS, MO 63141
Surgery
12855 N 40 DR, SUITE 382
SAINT LOUIS, MO 63141
Clinical Medical Laboratory
12855 N 40 DR, SUITE 275
SAINT LOUIS, MO 63141
Internal Medicine (Hematology & Oncology)
12855 N 40 DR, SUITE 200
SAINT LOUIS, MO 63141

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1821453796, enumerated as an "organization" on December 21, 2015.

The provider is located at 12855 N 40 DR SUITE 150 SAINT LOUIS, MO 63141 and the phone number is (314) 336-1130.

Clinic/Center with taxonomy code 261QA1903X and a focus in Ambulatory Surgical.

The provider might be accepting Accepts: Ambetter from Arkansas Health & Wellness, Ambetter. Please consult your insurance carrier or call the provider to verify.