Mason City Ambulatory Surgery Center, LLC
NPI 1902841398 · Ambulatory Surgical Clinic/Center · Mason City, IA
Enrolled with Medicare as Part B Supplier - Ambulatory Surgical Center · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mason City Ambulatory Surgery Center, LLC is a Ambulatory Surgical Clinic/Center organization in Mason City, IA (NPI 1902841398).
Provider details
- NPI number
- 1902841398
- Entity type
- Organization
- Primary specialty
- Ambulatory Surgical Clinic/CenterAmbulatory Health Care Facilities
- Organization subpart
- No
- Authorized official
- Timothy Dettmer, Medical Director(641) 494-5380
Specialties & taxonomies
Ambulatory Health Care Facilities
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
24,015 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Injection, Bupivacaine Liposome, 1 MgC9290 | 19,551 | $1 |
| Phenylephrine 10.16 Mg/Ml and Ketorolac 2.88 Mg/Ml Ophthalmic Irrigation Solution, 1 MlJ1097 | 813 | $96 |
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 714 | $996 |
| Injection, Non-Radioactive, Non-Contrast, Visualization Adjunct (e.g., Methylene Blue, Isosulfan Blue), 1 MgQ9968 | 550 | $8 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 494 | $534 |
| Complex Removal of Cataract With Insertion of Prosthetic Lens |
Practice location
Mailing address
Other names (DBA / former)
- Doing business as
- Mason City Surgery Center
Registry dates
- Enumerated
- 2006-06-18
- Last updated
- 2026-02-11
- Certified
- 2026-02-11
Frequently asked questions
- What is Mason City Ambulatory Surgery Center, LLC's NPI number?
- Mason City Ambulatory Surgery Center, LLC's National Provider Identifier (NPI) is 1902841398, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Mason City Ambulatory Surgery Center, LLC?
- Mason City Ambulatory Surgery Center, LLC is classified in the NPPES registry as Ambulatory Surgical Clinic/Center (Ambulatory Health Care Facilities).
- Where is Mason City Ambulatory Surgery Center, LLC located?
- Mason City Ambulatory Surgery Center, LLC's practice location on file with NPPES is 990 4th St Sw, Mason City, IA 50401-2861.
- What is Mason City Ambulatory Surgery Center, LLC's phone number?
- The practice phone number listed in the NPPES registry for Mason City Ambulatory Surgery Center, LLC is (641) 494-2000.
- Does Mason City Ambulatory Surgery Center, LLC accept Medicare?
- Mason City Ambulatory Surgery Center, LLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Mason City Ambulatory Surgery Center, LLC?
- The authorized official listed on Mason City Ambulatory Surgery Center, LLC's NPPES record is Timothy Dettmer, Medical Director. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Mason City Ambulatory Surgery Center, LLC's NPI active?
- Yes — Mason City Ambulatory Surgery Center, LLC's NPI (1902841398) is active in the NPPES registry as of the last update on 2026-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.