RACHEL DIAZ STARKS M.D., PH.D.
NPI 1386014801
Pathology - Anatomic Pathology & Clinical Pathology in Sioux Falls, SD
About Rachel Diaz Starks M.d., Ph.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RACHEL DIAZ STARKS M.D., PH.D. (NPI 1386014801) is an individual anatomic pathology & clinical pathology provider in Sioux Falls, South Dakota, licensed in South Dakota (12533) and active in the NPI registry since September 2015. She is enrolled in Medicare PECOS, is affiliated with Spencer Municipal Hospital, and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 3
Other Names 1
Secondary Practice Locations 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
Rachel Diaz Starks M.d., Ph.d. 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 Reassignment
Medicare enrollment records show Rachel Starks reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Sioux Falls, SD 57105
- Reassigned Medicare billing, South Dakota enrollment
- 16 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 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Spencer Municipal Hospital
Acute Care Hospitals · Spencer, IALakes Regional Healthcare
Acute Care Hospitals · Spirit Lake, IAAvera St Mary's Hospital
Acute Care Hospitals · Pierre, SDAvera Mckennan Hospital & University Health Center
Acute Care Hospitals · Sioux Falls, SDAvera Queen Of Peace
Critical Access Hospitals · Mitchell, SDPhysician 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.
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.
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 Rachel Starks's NPI number?
The NPI number for Rachel Starks is 1386014801. It was assigned to this individual provider in the NPPES registry on September 26, 2015. The provider is also known as Rachel Diaz.
Where is Rachel Starks located?
Rachel Starks practices at 1301 W 18th St, Sioux Falls, SD 57105. The listed phone number is (605) 312-1481.
What is Rachel Starks's specialty?
The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.
Is Rachel Starks enrolled in Medicare?
Yes. Rachel Starks 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 organization bills Medicare for Rachel Starks's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Rachel Starks reassigns Medicare benefits to Physicians Laboratory, Ltd. (Sioux Falls, SD). The 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 Rachel Starks's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Rachel Starks accept?
Health plans from Avera Health Plans, Oscar Insurance Company, Wellmark Health Plan of Iowa, Inc. and Wellmark of South Dakota, Inc. list Rachel Starks 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 Rachel Starks affiliated with any hospitals?
According to CMS data, Rachel Starks is affiliated with Spencer Municipal Hospital, Lakes Regional Healthcare, Avera St Mary's Hospital, Avera Mckennan Hospital & University Health Center and Avera Queen Of Peace.
When was this NPI record last updated?
The NPPES record for Rachel Starks was last updated on January 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 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.
# Rachel Diaz Starks, M.D., PH.D. · NPI 1386014801
Anatomic Pathology & Clinical Pathology physician in Sioux Falls, South Dakota. Individual provider, active in the CMS NPPES registry since September 26, 2015.
## Identity
- **NPI:** 1386014801 (Entity type: Individual)
- **Enumerated:** September 26, 2015
- **Primary specialty:** Pathology - Anatomic Pathology & Clinical Pathology · taxonomy 207ZP0102X
- **State license:** 12533 (South Dakota)
- **Sole proprietor:** No
## Practice location
- **Address:** 1301 W 18TH ST, Sioux Falls, SD 57105-0401
- **Phone:** (605) 312-1481 · **Fax:** (605) 312-1482
## 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:** Physicians Laboratory, Ltd. (NPI 1891747093, Sioux Falls, SD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2008
## Record status
- **NPPES last updated:** January 22, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1386014801) · Data from the CMS NPPES public registry.