RIVERVIEW SURGICAL CENTER LLC
NPI 1003374711
Clinic/Center - Ambulatory Surgical in South Sioux City, NE

NPI Status: Active since March 12, 2019

Contact Information

201 E 4TH STREET
SOUTH SIOUX CITY, NE
ZIP 68776
Phone: (712) 224-3033
Fax: (712) 224-3037

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NPPES record last updated: July 21, 2025. Verified against the NPPES registry weekly; last sync: July 12, 2026.

Record update history: Feb 16, 2023, Jul 2, 2019, Mar 12, 2019 (3 updates tracked since 2019).

  • Organization
  • Clinic/Center
  • Ambulatory Surgical
  • Accepts Insurance
  • CLIA Number: 28D2167505
  • CLIA Cert. Type: Ambulatory Surgery Center
  • CLIA Exp. Date: 06-09-2027

About RIVERVIEW SURGICAL CENTER LLC

This page provides the complete NPI Profile along with additional information for Riverview Surgical Center Llc, a provider established in South Sioux City, Nebraska operating as a Clinic/center, focusing in ambulatory surgical . The healthcare provider is registered in the NPI registry with number 1003374711 assigned on March 2019. The practitioner's primary taxonomy code is 261QA1903X. The provider is registered as an organization and their NPI record was last updated one year ago. The authorized official of this NPI record is Matt Niemeier (Ceo)

NPI
1003374711
Provider Name
RIVERVIEW SURGICAL CENTER LLC
Entity Type
Organization
Location Address
201 E 4TH STREET SOUTH SIOUX CITY, NE 68776
Location Phone
(712) 224-3033
Location Fax
(712) 224-3037
Mailing Address
201 E 4TH ST STE 100 SOUTH SIOUX CITY, NE 68776
Mailing Phone
(402) 412-2160
Mailing Fax
(402) 412-2100
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
03-12-2019
Last Update Date
07-21-2025
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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:

  • 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
  • Standard Expanded Bronze - EPO
  • Standard Expanded Bronze + Vision + Adult Dental - EPO
  • Standard Gold - EPO
  • Standard Gold + Vision + Adult Dental - EPO
  • Standard Silver - EPO
  • Standard Silver + Vision + Adult Dental - EPO
  • Choice Bronze HSA - EPO
  • Choice Bronze HSA + Vision + Adult Dental - EPO
  • Clear Silver - EPO
  • Clear Silver + Vision + Adult Dental - EPO
  • 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 Gold - EPO
  • Everyday Gold + Vision + Adult Dental - EPO
  • Standard Expanded Bronze - EPO
  • Standard Expanded Bronze + Vision + Adult Dental - EPO
  • Standard Gold - EPO
  • Standard Gold + Vision + Adult Dental - EPO
  • Standard Silver - EPO
  • Standard Silver + 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
  • Standard Expanded Bronze - EPO
  • Standard Expanded Bronze + Vision + Adult Dental - EPO
  • Standard Gold - EPO
  • Standard Gold + Vision + Adult Dental - EPO
  • Standard Silver - EPO
  • Standard 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
  • Elite Gold - EPO
  • Elite Gold + Vision + Adult Dental - EPO
  • Everyday Bronze - HMO
  • Everyday Bronze + Vision + Adult Dental - HMO
  • Everyday Gold - HMO
  • Everyday Gold + Vision + Adult Dental - HMO
  • Focused Silver - EPO
  • Focused Silver - HMO
  • Focused Silver + Vision + Adult Dental - EPO
  • Focused Silver + 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
  • Principal Bronze HSA - EPO
  • Principal Bronze HSA + Vision + Adult Dental - EPO
  • Standard Expanded Bronze - EPO
  • Standard Expanded Bronze + Vision + Adult Dental - EPO
  • Standard Gold - EPO
  • Standard Gold + Vision + Adult Dental - EPO
  • Standard Silver - EPO
  • ConnectPlus $0 Gold - PPO
  • ConnectPlus $0 Silver - PPO
  • ConnectPlus $10,600 HSA Eligible HDHP - PPO
  • ConnectPlus $1800 - PPO
  • ConnectPlus $4500 - PPO
  • ConnectPlus $6500 HSA Eligible HDHP - PPO
  • ConnectPlus $7500 HSA Eligible HDHP - PPO
  • ConnectPlus MyWeighForward $2000 - PPO
  • ConnectPlus MyWeighForward $6000 - PPO
  • ConnectPlus Standard $2000 - PPO
  • ConnectPlus Standard $6000 - PPO
  • ConnectPlus Standard $7500 HSA Eligible HDHP - PPO
  • HeartlandBlue Bronze 0% Coinsurance after Deductible NEtwork Blue - EPO
  • HeartlandBlue Bronze 0% Coinsurance after Deductible NEtwork Blue PPO - PPO
  • HeartlandBlue Bronze HSA 6500 NEtwork Blue - EPO
  • HeartlandBlue Bronze HSA 6500 NEtwork Blue PPO - PPO
  • HeartlandBlue Bronze Standard 7500 NEtwork Blue - EPO
  • HeartlandBlue Bronze Standard 7500 NEtwork Blue PPO - PPO
  • HeartlandBlue Gold $0 PCP Visit 1500 NEtwork Blue - EPO
  • HeartlandBlue Gold $0 PCP Visit 1500 NEtwork Blue PPO - PPO
  • HeartlandBlue Gold 1000 NEtwork Blue w/ Adult Vision - EPO
  • HeartlandBlue Gold 1000 NEtwork Blue w/ Adult Vision PPO - PPO
  • HeartlandBlue Gold Standard 2000 NEtwork Blue - EPO
  • HeartlandBlue Gold Standard 2000 NEtwork Blue PPO - PPO
  • HeartlandBlue Silver $0 PCP Visit 4500 NEtwork Blue - EPO
  • HeartlandBlue Silver $0 PCP Visit 4500 NEtwork Blue PPO - PPO
  • HeartlandBlue Silver HSA 5500 NEtwork Blue w/ Adult Vision - EPO
  • HeartlandBlue Silver HSA 5500 NEtwork Blue w/ Adult Vision PPO - PPO
  • HeartlandBlue Silver Standard 6000 NEtwork Blue - EPO
  • HeartlandBlue Silver Standard 6000 NEtwork Blue PPO - PPO
  • Bronze Classic - EPO
  • Bronze Classic | with Bryan Health - EPO
  • Bronze Classic 4700 - EPO
  • Bronze Classic Standard - EPO
  • Bronze Classic Standard | with Bryan Health - EPO
  • Bronze Elite + PCP Saver Plus - EPO
  • Bronze Elite + PCP Saver Plus | with Bryan Health - EPO
  • Bronze Simple Diabetes - EPO
  • Bronze Simple Diabetes | with Bryan Health - EPO
  • Gold Classic Standard - EPO
  • Gold Classic Standard | with Bryan Health - EPO
  • Gold Elite - EPO
  • Gold Elite | with Bryan Health - EPO
  • Secure - EPO
  • Silver Classic - EPO
  • Silver Classic Standard - EPO
  • Silver Classic Standard | with Bryan Health - EPO
  • Silver Simple Diabetes - EPO
  • Silver Simple Diabetes | with Bryan Health - EPO
  • Silver Simple PCP Saver - EPO
  • Sanford Individual Simplicity $1,750 - PPO
  • Sanford Individual Simplicity $10,600 - PPO
  • Sanford Individual Simplicity $3,500 - PPO
  • Sanford Individual Simplicity $4,750 - PPO
  • Sanford Individual Simplicity $6,500 - PPO
  • Sanford Individual Simplicity $7,200 HSA Qualified - PPO
  • Sanford Individual Simplicity Standardized $2,000 - PPO
  • Sanford Individual Simplicity Standardized $6,000 - PPO
  • Sanford Individual Simplicity Standardized $7,500 - PPO
  • UHC Bronze Copay Focus $0 Indiv Med Ded ($0 Virtual Urgent Care, No Referrals) - EPO
  • UHC Bronze Copay Focus+ $0 Indiv Med Ded ($0 Virtual Urgent Care, Dental + Vision, No Referrals) - EPO
  • UHC Bronze Essential ($0 Virtual Urgent Care, No Referrals) - EPO
  • UHC Bronze Standard (No Referrals) - EPO
  • UHC Gold Copay Focus $0 Indiv Med Ded ($0 Virtual Urgent Care, $3 Tier 2 Rx, No Referrals) - EPO
  • UHC Gold Copay Focus+ $0 Indiv Med Ded ($0 Virtual Urgent Care, $3 Tier 2 Rx, Dental + Vision, No Referrals) - EPO
  • UHC Gold Standard (No Referrals) - EPO
  • UHC Gold Value ($0 Virtual Urgent Care, $5 Tier 2 Rx, No Referrals) - EPO
  • UHC Silver Copay Focus $0 Indiv Med Ded ($0 Virtual Urgent Care, No Referrals) - EPO
  • UHC Silver Copay Focus+ $0 Indiv Med Ded ($0 Virtual Urgent Care, Dental + Vision, No Referrals) - EPO
  • UHC Silver Standard (No Referrals) - EPO
  • UHC Silver Standard+ (Dental + Vision, No Referrals) - EPO
  • UHC Silver Value ($0 Virtual Urgent Care, $8 Tier 2 Rx, No Referrals) - EPO
  • UHC Silver Value+ ($0 Virtual Urgent Care, $8 Tier 2 Rx, Dental + Vision, No Referrals) - 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

MATT NIEMEIER

Authorized Official Title
CEO
Authorized Official Phone
(402) 412-2160

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.

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 42 times for 41 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 62 times for 62 patients

Complex extracapsular removal of cataract with insertion of artificial lens and insertion of drainage device in front chamber of eye

This procedure involves removing a cloudy lens (cataract) from your eye through a larger incision, replacing it with an artificial one. A drainage device is also inserted in the front part of your eye to manage fluid levels, helping maintain eye health.

This service was performed 15 times for 12 patients

Complex removal of cataract with insertion of prosthetic lens

This procedure involves removing a cloudy lens (cataract) from your eye and replacing it with a clear, artificial lens. It helps restore vision that has been affected by the cataract. The operation is usually done under local anesthesia.

This service was performed 108 times for 80 patients

Extracapsular removal of cataract with insertion of artificial lens and insertion of drainage device in front chamber of eye

This is a two-part eye procedure. First, a cloudy lens (cataract) is removed from its outer layer and replaced with an artificial lens to improve vision. Second, a drainage device is inserted into the front part of the eye to manage fluid levels, preventing pressure build-up.

This service was performed 52 times for 33 patients

Incision or partial removal of foot bone (other than big toe) to straighten toe

This procedure involves making a small incision to partially remove a bone in the foot, excluding the big toe. The aim is to straighten a misaligned toe. It helps in relieving pain, improving foot function, and enhancing shoe comfort.

This service was performed 25 times for 12 patients

Incision or partial removal of toe bone to straighten toe

This procedure involves making a small cut or removing a portion of the toe bone to help straighten the toe. It's typically done to correct conditions like hammertoe, where the toe bends abnormally. This can alleviate pain and improve toe alignment.

This service was performed 16 times for 13 patients

Incision to improve eye fluid flow

This procedure, known as a trabeculectomy, involves creating a small opening in the eye to improve fluid flow. This can help lower eye pressure in conditions like glaucoma. It's a common, safe procedure to protect your eye health.

This service was performed 33 times for 23 patients

Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level

This procedure involves injecting a mix of numbing and anti-inflammatory medication into a specific nerve root in the lower back. It helps manage pain and reduce inflammation. The process is guided by imaging technology for precision.

This service was performed 63 times for 27 patients

Injection of substance into lower spine canal using imaging guidance

This procedure involves injecting a substance into your lower spine canal, guided by real-time images. It's done to diagnose or treat various conditions. You may feel slight discomfort, but it's generally safe and can provide valuable information for your treatment plan.

This service was performed 20 times for 18 patients

Injection procedure for sacroiliac joint; provision of anesthetic, steroid and/or other therapeutic agent, with or without arthrography

This procedure involves injecting medicine into the sacroiliac joint, located in the lower back. The aim is to reduce inflammation and pain. Anesthetic is used for immediate pain relief, while a steroid helps decrease inflammation over time. Arthrography, a type of imaging, may be used for precision.

This service was performed 40 times for 22 patients

Laser repair to improve eye fluid flow

Laser repair to improve eye fluid flow is a procedure aimed at treating glaucoma. A laser is used to create a small hole in the eye's drainage system, allowing fluid to flow out more easily. This helps to lower the pressure inside the eye, reducing the risk of vision loss.

This service was performed 40 times for 25 patients

Lengthening of calf muscle

Lengthening of the calf muscle is a procedure aimed at increasing flexibility and improving motion in the foot and ankle. This surgical process involves making a small incision to release the tight muscle or tendon, aiding in better mobility.

This service was performed 18 times for 18 patients

Phenylephrine 10.16 mg/ml and ketorolac 2.88 mg/ml ophthalmic irrigation solution, 1 ml

This solution is used during eye surgery to maintain pupil dilation and reduce inflammation. Phenylephrine widens the pupil, while Ketorolac helps to prevent pain and swelling. It's applied directly to the eye by your healthcare provider during the procedure.

This service was performed 1,080 times for 166 patients

Processing, preserving and transporting corneal tissue

Processing, preserving, and transporting corneal tissue involve careful steps to ensure its viability for transplantation. The tissue is first cleaned, then preserved in a special solution. It's packed in a temperature-controlled container for safe transport to its destination.

This service was performed 33 times for 19 patients

Removal of cataract with insertion of prosthetic lens

This is a procedure where a cloudy lens in your eye, known as a cataract, is removed. After removal, a clear artificial lens is inserted. This helps to restore your vision, enabling you to see clearly again.

This service was performed 845 times for 466 patients

Removal of deep implant from bone

This procedure involves the careful extraction of an implant deeply embedded in a bone. A specialist makes a small incision, then utilizes precise instruments to reach and safely remove the implant. The area is then closed and monitored for healing.

This service was performed 11 times for 11 patients

Removal of knee cartilage using an endoscope

This procedure, known as arthroscopic knee surgery, involves using a small camera (endoscope) to view the inside of your knee. Small instruments are used to remove damaged cartilage. This can help alleviate pain and improve knee function.

This service was performed 11 times for 11 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 65 times for 64 patients

Removal of recurring cataract in lens capsule using a laser

This procedure, known as YAG laser capsulotomy, treats cloudiness in the lens capsule following cataract surgery. A laser is used to create a small hole in the cloudy capsule, allowing light to pass through and restore clear vision. It's a quick, painless procedure.

This service was performed 344 times for 203 patients

Transplantation of outer layer of corneal tissue

The transplantation of the outer layer of corneal tissue is a procedure to replace damaged or diseased corneal tissue with healthy tissue from a donor. This can improve vision and alleviate pain or discomfort.

This service was performed 35 times for 19 patients

CLIA Information

The Clinical Laboratory Improvement Amendments (CLIA) of 1988 applies to facilities or sites that test human specimens for health assessment or to diagnose, prevent, or treat disease. The CLIA Program sets standards for clinical laboratory testing and issues certificates. The NPI / CLIA crosswalk information for this NPI number is:

CLIA Number
28D2167505
Facility Type
Ambulatory Surgery Center
Certificate Effective Date
June 10, 2025
Certificate Expiration Date
June 09, 2027
Laboratory Director
DR. PHINIT PHISITKUL
Certificate Type
Certificate of Waiver
Certificate Type Description
This CLIA certificate is issued to Riverview Surgical Center Llc to perform only waived tests. CLIA defines waived tests as simple tests with a low risk for an incorrect result. Waived tests include certain tests listed in CLIA regulations, tests cleared by the FDA for home use and tests approved by the FDA for waived status and that meet CLIA waiver criteria.

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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 1003374711, we treat the final digit (1) 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 59. The final step is to find the difference between that total and the next multiple of ten (60 - 59 = 1).

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
0
Unchanged
Pos 3
0
Doubled → 0
Pos 4
3
Unchanged
Pos 5
3
Doubled → 6
Pos 6
7
Unchanged
Pos 7
4
Doubled → 8
Pos 8
7
Unchanged
Pos 9
1
Doubled → 2
Check
1
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 0 → 0 3 → 6 4 → 8 1 → 2

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 0 + 3 + 6 + 7 + 8 + 7 + 2 + 24 = 59

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

The next multiple of ten after 59 is 60. The difference is the calculated check digit.

60 - 59 = 1
This NPI is valid
The calculated check digit is 1, which matches the last digit of 1003374711.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1003374711, enumerated as an "organization" on March 12, 2019.

The provider is located at 201 E 4TH STREET SOUTH SIOUX CITY, NE 68776 and the phone number is (712) 224-3033.

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

The provider might be accepting Accepts: Ambetter from Home State Health, Ambetter from NH. Please consult your insurance carrier or call the provider to verify.