Dr. Sarah Elizabeth Diaz , DO
Surgery โข Duluth, MN
400 E 3rd St
Duluth, MN 558051951
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 February 26, 2016; this date does not establish years in practice.
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Published CMS data list 305 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 45380 โ Biopsy of large bowel using a flexible endoscope: 50 service units.
- 46600 โ Diagnostic exam of anus using an endoscope: 45 service units.
- 45385 โ Removal of polyps or growths of large bowel using an endoscope with mechanical snare: 42 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 12 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 337 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Gavilyte-G (Peg3350/Sod Sulf,bicarb,cl/Kcl) โ 107 prescription fills, including refills.
- Peg-3350 And Electrolytes (Peg3350/Sod Sulf,bicarb,cl/Kcl) โ 84 prescription fills, including refills.
- Metronidazole โ 45 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 7 records in the table ยท Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 95% of clinicians listed under Surgery in Duluth, MN (2024, 15 clinicians with data). Median for this group: 77. Middle half: 58 to 116.
More Medicare Part B services than 90% of clinicians listed under Surgery in Minnesota (2024, 312 clinicians with data). Median for this group: 104. Middle half: 59 to 163.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 24 in 2022 to 305 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2022โ2024.
Practice Location & Contact Primary Location
400 E 3rd St
Duluth, MN 558051951
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 Midland, MI. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
CMS Doctors and Clinicians lists 1 group name: The Duluth Clinic Ltd. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
At Still University Of Health Sciences, College Of Osteo Med, Kirksville
2016
What Public CMS Data Show
Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
198 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2024.
Medicare-allowed amount
About $35,165 in 2024
The total amount Medicare approved for these services in 2024. 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 โ by Provider and Service, 2024.
Paid by Medicare
About $29,107 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, 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 โ by Provider and Service, 2024.
30-day fills
339 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
$9,018 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 โ by Provider and Drug, 2024.
Open Payments general payments, program year 2023
All general payments: $83.84 across 2 records.
By nature of payment
- Food and Beverage: $83.84 across 2 records.
Reporting-company totals
- Smith+Nephew, Inc.: $51.90 across 1 record.
- Intuitive Surgical, Inc.: $31.94 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 2023 (published June 30, 2026).
Years since graduation
10 years (graduated 2016)
CMS Doctors and Clinicians data list 2016 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2016
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.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
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, โDoes your provider accept Medicare as full payment?โ
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
What this does not show: Telehealth (some services)
It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Diaz 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. Diaz 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 Duluth and Minnesota
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 95% of clinicians listed under Surgery in Duluth, MN (2024, 15 clinicians with data). Median for this group: 77. Middle half: 58 to 116.
More Medicare Part B services than 90% of clinicians listed under Surgery in Minnesota (2024, 312 clinicians with data). Median for this group: 104. Middle half: 59 to 163.
Medicare-allowed amount
A higher Medicare-allowed amount than 90% of clinicians listed under Surgery in Duluth, MN (2024, 15 clinicians with data). Median for this group: $10,891. Middle half: $7,433 to $17,045.
A higher Medicare-allowed amount than 80% of clinicians listed under Surgery in Minnesota (2024, 312 clinicians with data). Median for this group: $14,248. Middle half: $7,430 to $24,576.
Paid by Medicare
A higher Medicare payment amount than 90% of clinicians listed under Surgery in Duluth, MN (2024, 15 clinicians with data). Median for this group: $8,541. Middle half: $5,585 to $13,080.
A higher Medicare payment amount than 85% of clinicians listed under Surgery in Minnesota (2024, 312 clinicians with data). Median for this group: $10,831. Middle half: $5,628 to $19,842.
Medicare Part D prescriptions
More Part D prescriptions than 95% of clinicians listed under Surgery in Duluth, MN (2024, 15 clinicians with data). Median for this group: 39. Middle half: 22 to 63.
More Part D prescriptions than 95% of clinicians listed under Surgery in Minnesota (2024, 302 clinicians with data). Median for this group: 49. Middle half: 25 to 93.
Part D drug cost
A higher Part D drug cost than 95% of clinicians listed under Surgery in Duluth, MN (2024, 15 clinicians with data). Median for this group: $175. Middle half: $51 to $453.
A higher Part D drug cost than 95% of clinicians listed under Surgery in Minnesota (2024, 302 clinicians with data). Median for this group: $207. Middle half: $63 to $1,029.
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 B services
Medicare Part B services increased 1171% from 24 in 2022 to 305 in 2024.
- 2022: 24
- 2023: 247
- 2024: 305
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Medicare-allowed amount
Medicare-allowed amount increased 1328% from $2,462 in 2022 to $35,165 in 2024.
- 2022: $2,462
- 2023: $31,252
- 2024: $35,165
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Paid by Medicare
Paid by Medicare increased 1384% from $1,962 in 2022 to $29,107 in 2024.
- 2022: $1,962
- 2023: $24,908
- 2024: $29,107
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Medicare Part D prescriptions
Medicare Part D prescriptions went from 11 in 2017 to 337 in 2024.
- 2017: 11
- 2022: 34
- 2023: 240
- 2024: 337
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30-day fills
30-day fills went from 11 in 2017 to 339 in 2024.
- 2017: 11
- 2022: 34
- 2023: 240
- 2024: 339
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Part D drug cost
Part D drug cost went from $56 in 2017 to $9,018 in 2024.
- 2017: $56
- 2022: $830
- 2023: $6,282
- 2024: $9,018
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $475.00 in 2022 to $83.84 in 2023.
- 2022: $475.00
- 2023: $83.84
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2023), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท 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 2023 (payments made January 1 โ December 31, 2023): fewer than 11 records totaling $83.84.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Smith+Nephew, Inc. |
Food and Beverage
In-kind items and services
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RENASYS TOUCH | General | $51.90 |
| Intuitive Surgical, Inc. |
Food and Beverage
In-kind items and services
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Da Vinci Surgical System | General | $31.94 |
Source: CMS Open Payments, program year 2023, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2021โ2023 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 โ by Provider and Service data, 2022โ2024; 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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45380
Biopsy of large bowel using a flexible endoscope
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50 | 50 | $976.00 | $121.84 |
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46600
Diagnostic exam of anus using an endoscope
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45 | 38 | $146.00 | $39.35 |
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45385
Removal of polyps or growths of large bowel using an endoscope with mechanical snare
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42 | 41 | $1499.00 | $233.92 |
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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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29 | 23 | $138.00 | $63.10 |
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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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25 | 12 | $144.00 | $75.44 |
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99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
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24 | 24 | $207.00 | $78.69 |
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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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18 | 13 | $198.00 | $92.77 |
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G0105
Colorectal cancer screening; colonoscopy on individual at high risk
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18 | 18 | $1086.00 | $174.39 |
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G0121
Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk
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17 | 17 | $1086.00 | $164.45 |
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99223
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
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13 | 12 | $406.00 | $165.19 |
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G2211
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's
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13 | 13 | $19.00 | $15.77 |
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99205
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more
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11 | 11 | $338.00 | $174.17 |
Source: CMS Part B by Provider and Service, 2024; 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 |
|---|---|---|---|---|---|
| Gavilyte-G | Peg3350/Sod Sulf,bicarb,cl/Kcl | 107 | 116 | $1,964.26 | 105 |
| Peg-3350 And Electrolytes | Peg3350/Sod Sulf,bicarb,cl/Kcl | 84 | 93 | $1,493.21 | 83 |
| Metronidazole | Metronidazole | 45 | 118 | $75.26 | 44 |
| Neomycin Sulfate | Neomycin Sulfate | 43 | 56 | $339.74 | 41 |
| Sutab | Sod Sulf/Pot Chloride/Mag Sulf | 29 | 40 | $4,642.72 | 29 |
| Peg 3350-Electrolyte | Sodium Chloride/Nahco3/Kcl/Peg | 16 | 18 | $392.73 | 16 |
| Celecoxib | Celecoxib | 13 | 250 | $109.89 | 11 |
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
Self-certified to NPPES: 2025-06-24NUCC 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.
NUCC 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.
NUCC Taxonomy Code: 208C00000X
A colon and rectal surgeon is trained to diagnose and treat various diseases of the intestinal tract, colon, rectum, anal canal and perianal area by medical and surgical means. This specialist also deals with other organs and tissues (such as the liver, urinary and female reproductive system) involved with primary intestinal disease.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - GENERAL SURGERY
I20250703002091
WI
2567754310
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
The Duluth Clinic Ltd
400 E 3rd St, Duluth, MN 558051951
Phone: 2187868364
Secondary Practice Locations
4100 Campus Ridge Dr
Midland, MI 486406139
Phone: 9898391795
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Physician Assistant
Physician Assistant
Psychiatry & Neurology - Neurology
Doctor of Osteopathic Medicine (D.O.)
Nurse Practitioner - Family
Advanced Practice Registered Nurse, Certified Nurse Practitioner
Physician Assistant
Physician Assistant (Certified)
Family Medicine
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 400 E 3RD ST, DULUTH, MN 558051951 (Tel: 2187868364)
Registered at 400 E 3RD ST, DULUTH, MN 558051951 (Tel: 2187868364)
Recorded as SARAH DIAZ, DO
Surgery (license number reported to NPPES: WI 81775)
Registered at 4100 CAMPUS RIDGE DR, MIDLAND, MI 486406139 (Tel: 9898391795)
Registered at 4000 WELLNESS DR, MIDLAND, MI 486702000
NPI status registered as active in NPPES database
Registered at 15855 19 MILE RD, CLINTON TOWNSHIP, MI 480383504 (Tel: 5862632976)
Registered at 15855 19 MILE RD, CLINTON TOWNSHIP, MI 480383504
Recorded as SARAH DIAZ
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Surgery Specialists in Duluth
- Dr. Stephen Huddleston, MD
- Dr. Nicole Flynn, DO
- Dr. Joshua Larson, MD
- John Bollins
- Dr. Steven Skube, MD
- Dr. Mary Boylan, MD
Mailing Address
400 E 3rd St
Duluth, MN 558051951
Phone: 2187868364