Gregory Nissen
NPI 1174813729 · Vascular Surgery Physician · Sioux Falls, SD
Enrolled with Medicare as Practitioner - Vascular Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Nissen is a Vascular Surgery Physician provider in Sioux Falls, SD (NPI 1174813729).
Provider details
- NPI number
- 1174813729
- Entity type
- Individual
- Primary specialty
- Vascular Surgery PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 10915 (SD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
15 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
2,206 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 331 | $122 |
| Ultrasound Study of Arm and Leg Arteries93922 | 210 | $61 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 203 | $16 |
| Ultrasound of Leg Arteries Or Artery Grafts93925 | 156 | $226 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 144 | $86 |
| Use of a Drug to Induce Depression of Consciousness By Physician Performing a Procedure, Each Additional 15 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.
| Drug | Part D claims (2024) |
|---|---|
| Clopidogrel Bisulfatebrand: Clopidogrel | 12 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,989 across 40 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- University of Alabama Birmingham1808 7th Avenue South, Bdb 503Birmingham, AL 35294-0001Phone: (205) 934-2006
- 1305 W 18th StSioux Falls, SD 57105-0401Phone: (605) 312-7300Fax: (605) 312-7301
Registry dates
- Enumerated
- 2011-04-17
- Last updated
- 2022-08-07
- Certified
- 2022-08-07
Frequently asked questions
- What is Gregory Nissen's NPI number?
- Gregory Nissen's National Provider Identifier (NPI) is 1174813729, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Nissen's specialty?
- Gregory Nissen is listed in the NPPES registry with a primary specialty of Vascular Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Nissen located?
- Gregory Nissen's practice location on file with NPPES is 3801 S Elmwood Ave, Sioux Falls, SD 57105-6565.
- What is Gregory Nissen's phone number?
- The practice phone number listed in the NPPES registry for Gregory Nissen is (605) 306-6140.
- Does Gregory Nissen accept Medicare?
- Gregory Nissen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Nissen's NPI active?
- Yes — Gregory Nissen's NPI (1174813729) is active in the NPPES registry as of the last update on 2022-08-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.