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

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

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

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: October 18, 2026.

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

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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

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mason City Ambulatory Surgery Center, Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 22 clinicians reassign Medicare billing to Mason City Ambulatory Surgery Center, LLC, which bills Medicare for the services they deliver. Of these, 1 practice within 10 miles. Listed here are the 20 practicing nearest to this location.