TIMOTHY S MASSELINK CRNA
NPI 1821062167
Nurse Anesthetist, Certified Registered in Sioux Falls, SD
About Timothy S Masselink Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TIMOTHY S MASSELINK CRNA (NPI 1821062167) is an individual nurse anesthetist, certified registered in Sioux Falls, South Dakota, licensed in South Dakota (CR000632) and active in the NPI registry since February 2006. He is a graduate of Other (2005).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Timothy S Masselink Crna is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Timothy Masselink reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Sioux Falls, SD 57105
- Reassigned Medicare billing, South Dakota enrollment
- 66 clinicians in this Medicare group
Sioux Falls, SD 57108
- Reassigned Medicare billing, South Dakota enrollment
- 24 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 57105 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SIOUX FALLS, SD 57105
SIOUX FALLS, SD 57105
SIOUX FALLS, SD 57105
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 Timothy Masselink's NPI number?
The NPI number for Timothy Masselink is 1821062167. It was assigned to this individual provider in the NPPES registry on February 14, 2006.
Where is Timothy Masselink located?
Timothy Masselink practices at 1305 W 18th St, Sioux Falls, SD 57105. The listed phone number is (605) 333-1000.
What is Timothy Masselink's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Timothy Masselink enrolled in Medicare?
Yes. Timothy Masselink is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Timothy Masselink's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Timothy Masselink reassigns Medicare benefits to 2 organizations: Sioux Falls Specialty Hospital, LLP (Sioux Falls, SD) and Ophthalmology Ltd Eye Surgery Center L L C (Sioux Falls, SD). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Timothy Masselink's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Timothy Masselink accept?
Health plans from Avera Health Plans, Oscar Insurance Company, Wellmark Health Plan of Iowa, Inc. and Wellmark of South Dakota, Inc. list Timothy Masselink 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 Timothy Masselink was last updated on October 25, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years 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.
# Timothy S Masselink, CRNA · NPI 1821062167
Nurse Anesthetist, Certified Registered physician in Sioux Falls, South Dakota. Individual provider, active in the CMS NPPES registry since February 14, 2006.
## Identity
- **NPI:** 1821062167 (Entity type: Individual)
- **Enumerated:** February 14, 2006
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** CR000632 (South Dakota)
- **Sole proprietor:** No
## Practice location
- **Address:** 1305 W 18TH ST, Sioux Falls, SD 57105-0401
- **Phone:** (605) 333-1000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Sioux Falls Specialty Hospital, LLP (NPI 1316946809, Sioux Falls, SD); Ophthalmology Ltd Eye Surgery Center L L C (NPI 1871581876, Sioux Falls, SD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2005
## Record status
- **NPPES last updated:** October 25, 2007
- **Other identifiers:** Medicare ID-Type Unspecified 100612 (SD); Medicaid 5754950 (SD); Medicare PIN S100612 (SD)
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Source: [NPI Profile](https://npiprofile.com/npi/1821062167) · Data from the CMS NPPES public registry.