RACHEL DIAZ STARKS M.D., PH.D.
NPI 1386014801
Pathology - Anatomic Pathology & Clinical Pathology in Sioux Falls, SD

Active since September 26, 2015PECOS EnrolledAccepts Medicare Assignment
1301 W 18TH ST, SIOUX FALLS, SD 57105(605) 312-1481(605) 312-1482 Get Directions Write a Review

NPPES record last updated: January 22, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Dec 20, 2024, Dec 15, 2024, Nov 8, 2021 and 2 more (5 updates tracked since 2019).

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

NPI1386014801
Entity TypeIndividualFemale
Primary Taxonomy207ZP0102X
Provider Legal NameRACHEL DIAZ STARKSCredential: M.D., PH.D.
Location Address1301 W 18TH STSioux Falls, SD 57105-0401
Mailing AddressPo Box 5050Sioux Falls, SD 57117-5050 · (605) 322-7200 · Fax (605) 322-7222
Fax(605) 312-1482
Sole ProprietorNo
Medical School CMSOtherGraduated 2008
Enumeration DateSeptember 26, 2015
Last NPPES UpdateJanuary 22, 20255 updates tracked since enumeration
NPPES CertifiedJanuary 22, 2025
NPI 1386014801 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZP0102X
License Licensed in SD · 12533
Definition

A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.

Also ListedPathology · Clinical PathologyTaxonomy 207ZC0006X · License 12533 (SD)
Also ListedPathology · Molecular Genetic PathologyTaxonomy 207ZP0007X · License 12533 (SD)
1301 W 18TH ST, Sioux Falls, SD 57105

Other Names 1

Former Name (1)Rachel Diaz

Secondary Practice Locations 3

Location 1200 Hawkins DrIowa City, IA 52242-1009 · Phone (319) 356-2139 · Fax (319) 384-9613
Location 2116 E 11th St Ste 204Spencer, IA 51301-4363 · Phone (712) 262-3795 · Fax (712) 262-3795
Location 31301 S Cliff Ave Ste 700Sioux Falls, SD 57105-1019 · Phone (605) 322-7200 · Fax (605) 322-7222

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

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.

PECOS PAC ID3678805710
PECOS Enrollment IDI20210814000405
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

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, IA
5/5 CMS rating
OwnershipGovernment - Local
CMS Certification Number160112
Location1200 1st Avenue EastSpencer, IA 51301 · Clay County
Emergency services Birthing friendly

Lakes Regional Healthcare

Acute Care Hospitals · Spirit Lake, IA
3/5 CMS rating
OwnershipGovernment - Local
CMS Certification Number160124
Location2301 Highway 71Spirit Lake, IA 51360 · Dickinson County
Emergency services Birthing friendly

Avera St Mary's Hospital

Acute Care Hospitals · Pierre, SD
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number430015
Location801 E SiouxPierre, SD 57501 · Hughes County
Emergency services Birthing friendly

Avera Mckennan Hospital & University Health Center

Acute Care Hospitals · Sioux Falls, SD
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number430016
Location1325 S Cliff AveSioux Falls, SD 57117 · Minnehaha County
Emergency services Birthing friendly

Avera Queen Of Peace

Critical Access Hospitals · Mitchell, SD
OwnershipVoluntary non-profit - Private
CMS Certification Number431340
Location525 N FosterMitchell, SD 57301 · Davison County
Emergency services Birthing friendly

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.

New Patient
$126.78 typical visit price
range $55.52 – $167.23
Typical copayment $31.69 (range $13.88 – $41.80)
Most-billed visit code 99204
Established Patient
$97.88 typical visit price
range $18.08 – $137.08
Typical copayment $24.47 (range $4.52 – $34.27)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

Nurse Practitioner
1301 W 18TH ST
SIOUX FALLS, SD 57105
Internal Medicine (Cardiovascular Disease)
1301 W 18TH ST
SIOUX FALLS, SD 57105
Nurse Practitioner (Family)
1301 W 18TH ST
SIOUX FALLS, SD 57105
Nurse Practitioner
1301 W 18TH ST
SIOUX FALLS, SD 57105
Internal Medicine (Cardiovascular Disease)
1301 W 18TH ST
SIOUX FALLS, SD 57105
Nurse Practitioner
1301 W 18TH ST
SIOUX FALLS, SD 57105
Physician Assistant
1301 W 18TH ST
SIOUX FALLS, SD 57105
Physician Assistant
1301 W 18TH ST
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 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.

What insurance does Rachel Starks accept?

Health plans from Avera Health Plans and Medica 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 with the weekly NPPES data releases published by CMS.