LAUREN A O'BRIEN MD
NPI 1447513379
Obstetrics & Gynecology in Harrisburg, SD
About Lauren A O'brien Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LAUREN A O'BRIEN MD (NPI 1447513379) is an individual obstetrics & gynecology provider in Harrisburg, South Dakota, licensed in Minnesota (60848) and active in the NPI registry since June 2012. She is enrolled in Medicare PECOS, is affiliated with Sanford Usd Medical Center, and maintains a secondary practice location in Marshall.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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
Lauren A O'brien Md 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
5Medicare enrollment records show Lauren O'brien reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Harrisburg, SD 57032
- Reassigned Medicare billing, South Dakota enrollment
- 826 clinicians in this Medicare group
Sioux Falls, SD 57105
- Reassigned Medicare billing, South Dakota enrollment
- 1,097 clinicians in this Medicare group
Worthington, MN 56187
- Reassigned Medicare billing, Minnesota enrollment
- 260 clinicians in this Medicare group
Worthington, MN 56187
- Reassigned Medicare billing, Minnesota enrollment
- 92 clinicians in this Medicare group
Granite Falls, MN 56241
- Reassigned Medicare billing, Minnesota enrollment
- Also billed through NPI 1700429610 (Minnesota)
- 82 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Sanford Usd Medical Center
Acute Care Hospitals · Sioux Falls, SDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 57032 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Lauren O'brien's NPI number?
The NPI number for Lauren O'brien is 1447513379. It was assigned to this individual provider in the NPPES registry on June 15, 2012.
Where is Lauren O'brien located?
Lauren O'brien practices at 111 N Cliff Ave, Harrisburg, SD 57032. The listed phone number is (605) 213-9700.
What is Lauren O'brien's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Lauren O'brien enrolled in Medicare?
Yes. Lauren O'brien 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 Lauren O'brien's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Lauren O'brien reassigns Medicare benefits to 5 organizations: Sanford Clinic (Harrisburg, SD), Sanford Medical Center (Sioux Falls, SD), Avera Marshall (Worthington, MN), Rural Health Care, Inc (Worthington, MN) and Avera Granite Falls (Granite Falls, MN). 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 Lauren O'brien's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Lauren O'brien accept?
Health plans from Sanford Health Plan, Security Health Plan, Wellmark Health Plan of Iowa, Inc. and Wellmark of South Dakota, Inc. list Lauren O'brien 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.
Is Lauren O'brien affiliated with any hospitals?
According to CMS data, Lauren O'brien is affiliated with Sanford Usd Medical Center.
When was this NPI record last updated?
The NPPES record for Lauren O'brien was last updated on January 17, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Lauren A O'brien, MD · NPI 1447513379
Obstetrics & Gynecology physician in Harrisburg, South Dakota. Individual provider, active in the CMS NPPES registry since June 15, 2012.
## Identity
- **NPI:** 1447513379 (Entity type: Individual)
- **Enumerated:** June 15, 2012
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** 60848 (Minnesota)
- **Sole proprietor:** No
## Practice location
- **Address:** 111 N CLIFF AVE, Harrisburg, SD 57032
- **Phone:** (605) 213-9700
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 5 organizations under Medicare reassignment (form CMS-855R): Sanford Clinic (NPI 1619990603, Harrisburg, SD); Sanford Medical Center (NPI 1093090342, Sioux Falls, SD); Avera Marshall (NPI 1417378555, Worthington, MN); Rural Health Care, Inc (NPI 1215317375, Worthington, MN); Avera Granite Falls (NPI 1700429644, Granite Falls, MN) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2012
## Record status
- **NPPES last updated:** January 17, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1447513379) · Data from the CMS NPPES public registry.