Dr. Gregory L Wiedel , MD
Internal Medicine • Huron, SD
455 Kansas Ave Se
Huron, SD 573502522
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. Gregory Wiedel is listed in NPPES under Internal Medicine.
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NPI assigned on June 17, 2005; this date does not establish years in practice.
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Published CMS data list 1,251 Original Medicare Part B services in 2022.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2022. Published rows only; this is not a quality measure.
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Published Part B service records, 2022:
- 36415 — Insertion of needle into vein for collection of blood sample: 102 service units.
- J3301 — Injection, triamcinolone acetonide, not otherwise specified, 10 mg: 96 service units.
- 99213 — Established patient outpatient office visit: 92 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2022. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2021 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2022). CPT notice
See all 28 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 75 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Lamictal (Lamotrigine) — 27 prescription fills, including refills.
- Furosemide — 24 prescription fills, including refills.
- Levothyroxine Sodium — 24 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table · Guide: How to read Medicare Part D prescriber data
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Fewer Part D prescriptions than 70% of clinicians listed under Internal Medicine in South Dakota (2024, 147 clinicians with data). Median for this group: 306. Middle half: 65 to 5,736.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 9,009 in 2018 to 1,251 in 2022.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2018–2022.
Practice Location & Contact Primary Location
455 Kansas Ave Se
Huron, SD 573502522
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
205 people with Original Medicare in 2022
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2022.
Medicare-allowed amount
About $36,233 in 2022
The total amount Medicare approved for these services in 2022. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2022.
Paid by Medicare
About $23,097 in 2022
The part of the Medicare-allowed amount that Medicare itself paid in 2022, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2022.
30-day fills
77 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$18,965 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Open Payments general payments, program year 2021
All general payments: $24.35 across 2 records.
By nature of payment
- Food and Beverage: $24.35 across 2 records.
Reporting-company totals
- Amgen Inc.: $12.74 across 1 record.
- Novartis Pharmaceuticals Corporation: $11.61 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2021 (published June 30, 2026).
NPI first issued
2005
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Wiedel has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Wiedel as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Huron and South Dakota
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
Fewer Part D prescriptions than 70% of clinicians listed under Internal Medicine in South Dakota (2024, 147 clinicians with data). Median for this group: 306. Middle half: 65 to 5,736.
Too few clinicians listed under Internal Medicine in Huron have Medicare Part D data for 2024 to compare.
Part D drug cost
Close to the middle for clinicians listed under Internal Medicine in South Dakota (2024, 147 clinicians with data). Median for this group: $18,609. Middle half: $3,826 to $342,244.
Too few clinicians listed under Internal Medicine in Huron have Medicare Part D data for 2024 to compare.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Dr. Wiedel are from 2022.
7 active clinicians are listed under Internal Medicine with a practice address in Huron, SD (248 in South Dakota).
Addresses are self-reported to NPPES and may be out of date.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services decreased 86% from 9,009 in 2018 to 1,251 in 2022.
- 2018: 9,009
- 2019: 8,818
- 2020: 11,286
- 2021: 10,123
- 2022: 1,251
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Medicare-allowed amount
Medicare-allowed amount decreased 82% from $206,860 in 2018 to $36,233 in 2022.
- 2018: $206,860
- 2019: $204,937
- 2020: $255,544
- 2021: $258,096
- 2022: $36,233
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Paid by Medicare
Paid by Medicare decreased 86% from $161,367 in 2018 to $23,097 in 2022.
- 2018: $161,367
- 2019: $160,189
- 2020: $204,156
- 2021: $206,933
- 2022: $23,097
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 99% from 13,602 in 2020 to 75 in 2024.
- 2020: 13,602
- 2021: 13,441
- 2022: 5,757
- 2023: 271
- 2024: 75
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30-day fills
30-day fills decreased 100% from 18,620 in 2020 to 77 in 2024.
- 2020: 18,620
- 2021: 18,680
- 2022: 8,360
- 2023: 316
- 2024: 77
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Part D drug cost
Part D drug cost decreased 97% from $695,551 in 2020 to $18,965 in 2024.
- 2020: $695,551
- 2021: $919,922
- 2022: $320,464
- 2023: $32,545
- 2024: $18,965
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $11.56 in 2020 to $24.35 in 2021.
- 2020: $11.56
- 2021: $24.35
Sources: CMS Medicare Physician & Other Practitioners (2022), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2021), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2021 (payments made January 1 – December 31, 2021): fewer than 11 records totaling $24.35.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Amgen Inc. |
Food and Beverage
In-kind items and services
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EVENITY | General | $12.74 |
| Novartis Pharmaceuticals Corporation |
Food and Beverage
In-kind items and services
|
ENTRESTO | General | $11.61 |
Source: CMS Open Payments, program year 2021, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2021 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2022; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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36415
Insertion of needle into vein for collection of blood sample
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102 | 95 | $29.70 | $2.97 |
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J3301
Injection, triamcinolone acetonide, not otherwise specified, 10 mg
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96 | 12 | $3.00 | $1.11 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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92 | 76 | $94.29 | $89.72 |
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80053
Blood test, comprehensive group of blood chemicals
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83 | 83 | $60.00 | $10.43 |
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85027
Complete blood cell count (red cells, white blood cell, platelets), automated test
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81 | 80 | $36.00 | $6.39 |
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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81 | 71 | $130.10 | $127.07 |
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82977
Glutamyltransferase (liver enzyme) level
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71 | 71 | $35.00 | $7.10 |
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84443
Blood test, thyroid stimulating hormone (tsh)
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63 | 63 | $89.00 | $16.53 |
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80061
Blood test, lipids (cholesterol and triglycerides)
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61 | 61 | $80.00 | $13.17 |
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84439
Thyroxine (thyroid chemical), free
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61 | 61 | $64.47 | $8.87 |
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99232
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
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58 | 16 | $69.60 | $69.04 |
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J0295
Injection, ampicillin sodium/sulbactam sodium, per 1.5 gm
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46 | 12 | $8.00 | $2.73 |
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82550
Creatine kinase (cardiac enzyme) level, total
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43 | 43 | $40.00 | $6.36 |
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83036
Hemoglobin a1c level
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41 | 41 | $43.00 | $9.47 |
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96372
Injection of drug or substance under skin or into muscle
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31 | 14 | $14.08 | $14.08 |
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82044
Urine microalbumin (protein) analysis
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30 | 29 | $30.00 | $6.23 |
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99231
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes
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27 | 12 | $37.24 | $37.18 |
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87804
Detection test by immunoassay with direct visual observation for influenza virus
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24 | 12 | $50.00 | $16.55 |
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85651
Red blood cell sedimentation rate, to detect inflammation, non-automated
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22 | 22 | $25.00 | $4.27 |
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71046
X-ray of chest, 2 views
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18 | 18 | $56.95 | $33.76 |
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20610
Aspiration and/or injection of fluid from large joint
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17 | 14 | $84.38 | $66.59 |
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87426
Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus
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17 | 16 | $80.00 | $35.33 |
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99238
Hospital discharge day management, 30 minutes or less
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17 | 16 | $70.18 | $69.96 |
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82947
Blood glucose (sugar) level
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16 | 16 | $17.50 | $3.68 |
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81001
Manual urinalysis test with examination using microscope, automated
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15 | 14 | $30.00 | $2.96 |
(top 25 shown)
Source: CMS Part B by Provider and Service, 2022; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Lamictal | Lamotrigine | 27 | 378 | $18,668.03 | — |
| Furosemide | Furosemide | 24 | 336 | $110.64 | — |
| Levothyroxine Sodium | Levothyroxine Sodium | 24 | 426 | $186.68 | — |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 207R00000X
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20070815000591
SD
1355316662
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Nurse Practitioner
CNPMS
Surgery
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Nurse Practitioner
Certified Nurse Practitioner, Physician Assistant (Certified)
Nurse Practitioner - Family
Doctor of Nursing Practice, Family Nurse Practitioner (Certified)
Career & Practice History
NPI enumerated June 17, 2005.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to November 2026.
NPI Administrative Meta
Other Internal Medicine Providers in Huron
More public profiles in South Dakota
Directory navigation, in NPI number order.
- Kelly Wharton, CNP Nurse Practitioner - Family · Sioux Falls
- Mackenzie Warner, CNP Nurse Practitioner · Sioux Falls
- Rebecca Christensen, CNP Nurse Practitioner - Family · Rapid City
- Kristina Jurgensen, APRN CNP Nurse Practitioner - Family · Spearfish
- Carla De Matos Konrad, MD Family Medicine · Sioux Falls
- Mariah Baier, PA-C Physician Assistant · Sioux Falls
- Juliana Olevson Physician Assistant · Sioux Falls
- Kimberley Tirado, APRN, DNP, AGACNP-BC Nurse Practitioner · Sioux Falls
- Jena Preszler, MD Student in an Organized Health Care Education/Training Program · Sioux Falls
- Kyla Stilwell, CNP Nurse Practitioner · Rapid City
- Rick Wagner, MD Surgery · Winner
- Wesley Nord, MD Family Medicine · Sioux Falls
Mailing Address
Po Box 1411
Huron, SD 573501411
Phone: 6053528767