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MASON CITY AMBULATORY SURGERY CENTER, LLC
NPI 1689251720
Anesthesiology in Mason City, IA

Active since March 25, 2021CLIA 16D1043093 · Waiver
990 4TH ST SW, MASON CITY, IA 50401(641) 494-2000(641) 494-2018 Get Directions Write a Review

NPPES record last updated: April 2, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Apr 2, 2025, May 6, 2021, Apr 13, 2021 and 2 more (5 updates tracked since 2021).

About Mason City Ambulatory Surgery Center, Llc NPPES

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

MASON CITY AMBULATORY SURGERY CENTER, LLC (NPI 1689251720), doing business as Mason City Surgery Center, is a healthcare organization registered as an anesthesiology in Mason City, Iowa and active in the NPI registry since March 2021. The organization holds a CLIA Waiver certificate valid through July 14, 2027 and lists Kevin R Rier, Medical Director, as its authorized official.

NPPES Registry Identity

NPI1689251720
Entity TypeOrganization
Primary Taxonomy207L00000X
Legal Business NameMASON CITY AMBULATORY SURGERY CENTER, LLC
Location Address990 4TH ST SWMason City, IA 50401-2861
Mailing Address990 4th St SwMason City, IA 50401-2861 · (641) 494-2000 · Fax (641) 494-2018
Phone(641) 494-2000
Fax(641) 494-2018
Organization SubpartNo
Authorized OfficialKevin R RierMedical Director · (641) 494-2000
Enumeration DateMarch 25, 2021
Last NPPES UpdateApril 2, 20255 updates tracked since enumeration
NPPES CertifiedApril 2, 2025
✔ NPI 1689251720 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
Also ListedNurse Anesthetist, Certified RegisteredTaxonomy 367500000X
990 4TH ST SW, Mason City, IA 50401
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Other Names 1

Doing Business AsMason City Surgery Center

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted Insurance

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

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 16D1043093

Mason City Ambulatory Surgery Center · Mason City, IA
Active · expires Jul 14, 2027
CLIA Number16D1043093
Laboratory TypeAmbulatory Surgery Center
Certificate Effective DateJuly 15, 2025
Certificate Expiration DateJuly 14, 2027
Laboratory DirectorMr. Tyler Johanns
Laboratory Phone(641) 494-2000
Laboratory LocationMason City Ambulatory Surgery Center990 4th Street SW, Mason City, IA 50401
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Other Providers at the Same Location NPPES

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

MASON CITY AMBULATORY SURGERY CENTER, LLC
Clinic/Center (Ambulatory Surgical)
990 4TH ST SW
MASON CITY, IA 50401
Cerro Gordo County (641) 494-2000

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 Mason City Ambulatory Surgery Center, LLC's NPI number?

The NPI number for Mason City Ambulatory Surgery Center, LLC is 1689251720. It was assigned to this organization in the NPPES registry on March 25, 2021. The provider is doing business as Mason City Surgery Center.

Where is Mason City Ambulatory Surgery Center, LLC located?

Mason City Ambulatory Surgery Center, LLC is located at 990 4th St SW, Mason City, IA 50401. The listed phone number is (641) 494-2000.

What is Mason City Ambulatory Surgery Center, LLC's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Does Mason City Ambulatory Surgery Center, LLC hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 16D1043093) is associated with this NPI, valid through July 14, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Mason City Ambulatory Surgery Center, LLC accept?

Health plans from Medica list Mason City Ambulatory Surgery Center, LLC 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.

When was this NPI record last updated?

The NPPES record for Mason City Ambulatory Surgery Center, LLC was last updated on April 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.