Dr. Thomas Mark Nelson , MD
Surgery • Duluth, MN
920 E 1st St, Suite P302
Duluth, MN 558052201
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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NPI assigned on May 12, 2006; this date does not establish years in practice.
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Published CMS data list 22 Medicare Part D prescriptions, including refills, in 2022.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2022. Published rows only; this is not a quality measure.
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Published Part D records, 2022:
- Omeprazole — 22 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2022. 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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Medicare Part D prescriptions went from 23 in 2018 to 22 in 2022.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2018–2022.
Practice Location & Contact Primary Location
920 E 1st St
Suite P302
Duluth, MN 558052201
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 1 additional practice-address record in Mora, MN. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
What Public CMS Data Show
Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
48 standardized 30-day fills in 2022
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
$199 in 2022
The total cost of these prescriptions in 2022, 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, 2022.
Open Payments general payments, program year 2019
All general payments: $150.70 across 3 records.
By nature of payment
- Food and Beverage: $130.72 across 2 records.
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program: $19.98 across 1 record.
Reporting-company totals
- KCI USA, Inc: $82.43 across 1 record.
- Stryker Corporation: $48.29 across 1 record.
- Organogenesis Inc.: $19.98 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 2019 (published June 30, 2026).
NPI first issued
2006
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.
Compared with the same specialty in Duluth and Minnesota
Billing and prescribing volume is not a quality rating.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Nelson are from 2022.
25 active clinicians are listed under Surgery with a practice address in Duluth, MN (742 in Minnesota).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Duluth
20% of these 25 clinicians have the CMS telehealth indicator.
72% of these 25 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part D prescriptions
Medicare Part D prescriptions varied from year to year: 23 in 2018 and 22 in 2022.
- 2018: 23
- 2019: 19
- 2020: 30
- 2021: 68
- 2022: 22
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30-day fills
30-day fills increased 14% from 42 in 2018 to 48 in 2022.
- 2018: 42
- 2019: 39
- 2020: 56
- 2021: 97
- 2022: 48
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Part D drug cost
Part D drug cost went from $162 in 2018 to $199 in 2022.
- 2018: $162
- 2019: $151
- 2020: $146
- 2021: $509
- 2022: $199
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Industry payments (Open Payments)
CMS data for industry payments (Open Payments) are available for 2019 only.
Sources: CMS Medicare Part D Prescribers (2022), CMS Open Payments (2019), 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 2019 (payments made January 1 – December 31, 2019): fewer than 11 records totaling $150.70.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| KCI USA, Inc |
Food and Beverage
In-kind items and services
|
VAC VERAFLO | General | $82.43 |
| Stryker Corporation |
Food and Beverage
Cash or cash equivalent
|
MAKO | General | $48.29 |
| Organogenesis Inc. |
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program
In-kind items and services
|
Apligraf | General | $19.98 |
Source: CMS Open Payments, program year 2019, released June 30, 2026.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2022.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Omeprazole | Omeprazole | 22 | 1,398 | $199.22 | 15 |
Source: CMS Part D by Provider and Drug, 2022; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2021-03-02NUCC Taxonomy Code: 208600000X
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
Additional State Medicaid & Healthcare Payer Identifiers
Secondary Practice Locations
301 Highway 65 S
Mora, MN 550511899
Phone: 3202253317
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Surgery
Surgery
Doctor of Medicine (M.D.)
Surgery
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant (Certified)
Physician Assistant
Physician Assistant (Certified)
Physician Assistant
Physician Assistant
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 301 HIGHWAY 65 S, MORA, MN 550511899 (Tel: 3202253317)
NPI status registered as active in NPPES database
Registered at 920 E 1ST ST, SUITE P302, DULUTH, MN 558052201 (Tel: 2182496050)
Registered at 920 E 1ST ST, SUITE P302, DULUTH, MN 558052201 (Tel: 2182496050)
Recorded as THOMAS NELSON, MD
Surgery (license number reported to NPPES: MN 34418)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Surgery Specialists in Duluth
- John Bollins
- Dr. Kristin Colling, MD
- Dr. John Baxter, MD
- Dr. Steven Skube, MD
- Dr. Mary Boylan, MD
- Jay Lenz
Mailing Address
301 Highway 65 S
Mora, MN 550511899
Phone: 3202253317