1. Home
  2. Directory
  3. South Dakota
  4. Sioux Falls
  5. Nurse Practitioner
  6. NPI Profile

GREGORY P STUDER CNP
NPI 1437757622
Nurse Practitioner in Sioux Falls, SD

Active since October 11, 2020PECOS EnrolledAccepts Medicare Assignment
82.28/100
CMS Quality Rating
1305 W 18TH ST, SIOUX FALLS, SD 57105(605) 312-7300(605) 312-7301 Get Directions Write a Review

NPPES record last updated: July 30, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 29, 2022, Dec 8, 2020, Oct 11, 2020 (3 updates tracked since 2020).

About Gregory P Studer Cnp NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GREGORY P STUDER CNP (NPI 1437757622) is an individual nurse practitioner in Sioux Falls, South Dakota, licensed in South Dakota (CP001858) and active in the NPI registry since October 2020. He is enrolled in Medicare PECOS, is affiliated with Sanford Worthington Medical Center, and is a graduate of Other (2019).

NPPES Registry Identity

NPI1437757622
Entity TypeIndividualMale
Primary Taxonomy363L00000X
Provider Legal NameGREGORY P STUDERCredential: CNP
Location Address1305 W 18TH STSioux Falls, SD 57105-0401
Mailing AddressPo Box 5074Sioux Falls, SD 57117-5074
Phone(605) 312-7300
Fax(605) 312-7301
Sole ProprietorNo
Medical School CMSOtherGraduated 2019
Enumeration DateOctober 11, 2020
Last NPPES UpdateJuly 30, 20253 updates tracked since enumeration
NPPES CertifiedJuly 30, 2025
✔ NPI 1437757622 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
Licenses✔ Licensed in SD · CP001858✔ Licensed in MN · 8247
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
Also ListedNurse Practitioner · FamilyTaxonomy 363LF0000X · License CP001858 (SD)
1305 W 18TH ST, Sioux Falls, SD 57105
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross Blue Shield of North Dakota, Sanford Health Plan, Security Health Plan and more.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

Gregory P Studer Cnp 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 ID840602058
PECOS Enrollment IDI20201211002035, I20230407001896
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.

Medicare Billing Reassignments

3

Medicare enrollment records show Gregory Studer reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Sanford Clinic
Same address
Surgery
1305 W 18TH ST
Sioux Falls, SD 57105
  • Reassigned Medicare billing, Minnesota and South Dakota enrollments
  • Also billed through NPI 1043583537 (South Dakota)
  • 103 clinicians in this Medicare group
NPI 1194733535 (605) 328-3350
Sanford Medical Center
0.7 mi
Family Medicine
1420 W 22NDST STE 104
Sioux Falls, SD 57105
  • Reassigned Medicare billing, Minnesota and South Dakota enrollments
  • 57 clinicians in this Medicare group
NPI 1093090342 (605) 328-4897
Sanford Health Network
19 mi
Family Medicine
400 N HIAWATHA DRIVE
Canton, SD 57013
  • Reassigned Medicare billing, South Dakota and Minnesota enrollments
  • Also billed through NPI 1497703045 (Minnesota)
  • 422 clinicians in this Medicare group
NPI 1033140454 (605) 987-4378

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 6

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.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
106 services89 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
19 services17 patients
Exposure of groin artery for delivery of graft 34713
This procedure involves the surgeon making a small incision in the groin area to access a major artery. A graft, which is a special tube, is then placed into the artery to help improve blood flow. It's a common procedure for treating vascular conditions.
15 services15 patients
Removal of tunneled central venous tube 36589
A tunneled central venous tube removal is a procedure to take out a long, thin tube that was previously placed in a large vein in your body. This tube helps deliver medication or nutrition. The removal is usually quick and done under local anesthesia.
13 services13 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
13 services13 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
13 services12 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Sanford Worthington Medical Center

Acute Care Hospitals · Worthington, MN
OwnershipVoluntary non-profit - Private
CMS Certification Number240022
Location1018 Sixth Avenue PO Box 997Worthington, MN 56187 · Nobles County
Emergency services Birthing friendly

Sanford Tracy Medical Center

Critical Access Hospitals · Tracy, MN
OwnershipVoluntary non-profit - Private
CMS Certification Number241303
Location251 Fifth Street EastTracy, MN 56175 · Lyon County
Emergency services

Sanford Jackson Medical Center

Critical Access Hospitals · Jackson, MN
OwnershipVoluntary non-profit - Private
CMS Certification Number241315
Location1430 North HighwayJackson, MN 56143 · Jackson County
Emergency services

Ortonville Area Health Services

Critical Access Hospitals · Ortonville, MN
OwnershipGovernment - Local
CMS Certification Number241342
Location450 Eastvold AveOrtonville, MN 56278 · Big Stone County
Emergency services Birthing friendly

Sanford Usd Medical Center

Acute Care Hospitals · Sioux Falls, SD
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number430027
Location1305 W 18th St Post Office Box 5039Sioux Falls, SD 57117 · Minnehaha 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
$85.21 typical visit price
range $55.52 – $167.23
Typical copayment $21.30 (range $13.88 – $41.80)
Most-billed visit code 99203
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.

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.

82.28/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality88.81
Promoting Interoperability99
Improvement Activities40
Cost52.95

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.

JEDD D BIALAS CRNA
Nurse Anesthetist, Certified Registered
1305 W 18TH ST
SIOUX FALLS, SD 57105
Minnehaha County (605) 333-1000
AARON DANIEL MORTENSEN CRNA
Nurse Anesthetist, Certified Registered
1305 W 18TH ST
SIOUX FALLS, SD 57105
Minnehaha County (605) 333-1000
DR. JULIANA JOHNSON FERRI GUERRA MD
Internal Medicine (Endocrinology, Diabetes & Metabolism)
1305 W 18TH ST
SIOUX FALLS, SD 57105
Minnehaha County (605) 328-8700
PAUL E GILMORE CRNA
Nurse Anesthetist, Certified Registered
1305 W 18TH ST
SIOUX FALLS, SD 57105
Minnehaha County (605) 333-1000
BETH ABRAHAMSON
Nurse Practitioner (Neonatal)
1305 W 18TH ST
SIOUX FALLS, SD 57105
Minnehaha County (605) 328-3006
RYAN LAWRENCE TENNANT CNP
Nurse Practitioner
1305 W 18TH ST
SIOUX FALLS, SD 57105
Minnehaha County (605) 333-1000
LCM PATHOLOGISTS PC
Pathology (Anatomic Pathology & Clinical Pathology)
1305 W 18TH ST
SIOUX FALLS, SD 57105
Minnehaha County (800) 284-9806
ARLEIGH TRAINOR MD
Emergency Medicine
1305 W 18TH ST
SIOUX FALLS, SD 57105
Minnehaha County (605) 333-1000

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 Gregory Studer's NPI number?

The NPI number for Gregory Studer is 1437757622. It was assigned to this individual provider in the NPPES registry on October 11, 2020.

Where is Gregory Studer located?

Gregory Studer practices at 1305 W 18th St, Sioux Falls, SD 57105. The listed phone number is (605) 312-7300.

What is Gregory Studer's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Gregory Studer enrolled in Medicare?

Yes. Gregory Studer 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 Gregory Studer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Studer reassigns Medicare benefits to 3 organizations: Sanford Clinic (Sioux Falls, SD), Sanford Medical Center (Sioux Falls, SD) and Sanford Health Network (Canton, 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 Gregory Studer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gregory Studer accept?

Health plans from Blue Cross Blue Shield of North Dakota, Sanford Health Plan, Security Health Plan, Wellmark Health Plan of Iowa, Inc. and Wellmark of South Dakota, Inc. list Gregory Studer 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 Gregory Studer affiliated with any hospitals?

According to CMS data, Gregory Studer is affiliated with Sanford Worthington Medical Center, Sanford Tracy Medical Center, Sanford Jackson Medical Center, Ortonville Area Health Services and Sanford Usd Medical Center.

When was this NPI record last updated?

The NPPES record for Gregory Studer was last updated on July 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.