Dr. Robert W Olson , MD
Internal Medicine • Madison, WI
4410 Regent St
Madison, WI 537054901
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. Robert Olson is listed in NPPES under Internal Medicine.
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NPI assigned on April 6, 2006; this date does not establish years in practice.
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Published CMS data list 3,438 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99214 — Established patient outpatient office visit: 569 service units.
- 36415 — Insertion of needle into vein for collection of blood sample: 508 service units.
- 80048 — Blood test, basic group of blood chemicals (calcium, total): 341 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® 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 37 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 7,752 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:
- Atorvastatin Calcium — 407 prescription fills, including refills.
- Amlodipine Besylate — 318 prescription fills, including refills.
- Simvastatin — 299 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 all 146 records in the table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 95% of clinicians listed under Internal Medicine in Madison, WI (2024, 149 clinicians with data). Median for this group: 716. Middle half: 401 to 1,369.
More Medicare Part B services than 95% of clinicians listed under Internal Medicine in Wisconsin (2024, 1,010 clinicians with data). Median for this group: 572. Middle half: 266 to 1,020.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 5,603 in 2020 to 3,438 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
4410 Regent St
Madison, WI 537054901
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
400 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 – by Provider, 2024.
Medicare-allowed amount
About $139,201 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 – by Provider and Service, 2024.
Paid by Medicare
About $106,962 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 – by Provider and Service, 2024.
30-day fills
16,588 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
$574,330 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.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $285.00 in 2025
Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.
General: payments not tied to research, such as meals, travel, consulting or speaking fees.
A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.
Source: CMS Open Payments, program year 2025.
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.
Enrolled in Medicare (PECOS)
Dr. Olson 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. Olson 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 Madison and Wisconsin
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 95% of clinicians listed under Internal Medicine in Madison, WI (2024, 149 clinicians with data). Median for this group: 716. Middle half: 401 to 1,369.
More Medicare Part B services than 95% of clinicians listed under Internal Medicine in Wisconsin (2024, 1,010 clinicians with data). Median for this group: 572. Middle half: 266 to 1,020.
Medicare-allowed amount
A higher Medicare-allowed amount than 90% of clinicians listed under Internal Medicine in Madison, WI (2024, 149 clinicians with data). Median for this group: $53,445. Middle half: $27,380 to $79,988.
A higher Medicare-allowed amount than 90% of clinicians listed under Internal Medicine in Wisconsin (2024, 1,010 clinicians with data). Median for this group: $49,332. Middle half: $25,625 to $85,764.
Paid by Medicare
A higher Medicare payment amount than 90% of clinicians listed under Internal Medicine in Madison, WI (2024, 149 clinicians with data). Median for this group: $37,692. Middle half: $19,617 to $62,004.
A higher Medicare payment amount than 90% of clinicians listed under Internal Medicine in Wisconsin (2024, 1,010 clinicians with data). Median for this group: $38,120. Middle half: $18,776 to $65,615.
Medicare Part D prescriptions
More Part D prescriptions than 85% of clinicians listed under Internal Medicine in Madison, WI (2024, 189 clinicians with data). Median for this group: 343. Middle half: 74 to 5,148.
More Part D prescriptions than 75% of clinicians listed under Internal Medicine in Wisconsin (2024, 1,164 clinicians with data). Median for this group: 2,178. Middle half: 139 to 7,601.
Part D drug cost
A higher Part D drug cost than 80% of clinicians listed under Internal Medicine in Madison, WI (2024, 189 clinicians with data). Median for this group: $21,174. Middle half: $1,023 to $474,642.
A higher Part D drug cost than 70% of clinicians listed under Internal Medicine in Wisconsin (2024, 1,164 clinicians with data). Median for this group: $173,642. Middle half: $7,999 to $596,192.
417 active clinicians are listed under Internal Medicine with a practice address in Madison, WI (2,078 in Wisconsin).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Madison
21.8% of these 417 clinicians have the CMS telehealth indicator.
36.9% of these 417 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 decreased 39% from 5,603 in 2020 to 3,438 in 2024.
- 2020: 5,603
- 2021: 5,747
- 2022: 5,051
- 2023: 4,357
- 2024: 3,438
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Medicare-allowed amount
Medicare-allowed amount decreased 23% from $180,311 in 2020 to $139,201 in 2024.
- 2020: $180,311
- 2021: $199,172
- 2022: $178,546
- 2023: $162,552
- 2024: $139,201
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Paid by Medicare
Paid by Medicare decreased 22% from $136,650 in 2020 to $106,962 in 2024.
- 2020: $136,650
- 2021: $156,957
- 2022: $136,421
- 2023: $126,216
- 2024: $106,962
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 16% from 9,184 in 2020 to 7,752 in 2024.
- 2020: 9,184
- 2021: 8,974
- 2022: 8,377
- 2023: 8,551
- 2024: 7,752
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30-day fills
30-day fills decreased 11% from 18,716 in 2020 to 16,588 in 2024.
- 2020: 18,716
- 2021: 18,485
- 2022: 17,443
- 2023: 17,747
- 2024: 16,588
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Part D drug cost
Part D drug cost decreased 21% from $723,735 in 2020 to $574,330 in 2024.
- 2020: $723,735
- 2021: $679,937
- 2022: $667,225
- 2023: $709,326
- 2024: $574,330
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $69.96 in 2019 to $285.00 in 2025.
- 2019: $69.96
- 2023: $50.00
- 2025: $285.00
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), 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 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $285.00.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Sekisui Diagnostics LLC |
Gift
Cash or cash equivalent
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— | General | $285.00 |
Source: CMS Open Payments, program year 2025, 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 2016–2023 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, 2017–2024; 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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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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569 | 284 | $335.00 | $123.79 |
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36415
Insertion of needle into vein for collection of blood sample
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508 | 317 | $33.92 | $8.65 |
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80048
Blood test, basic group of blood chemicals (calcium, total)
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341 | 257 | $144.57 | $8.29 |
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80061
Blood test, lipids (cholesterol and triglycerides)
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247 | 234 | $123.72 | $13.12 |
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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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207 | 149 | $237.00 | $87.72 |
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85027
Complete blood cell count (red cells, white blood cell, platelets), automated test
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205 | 166 | $45.80 | $6.34 |
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83036
Hemoglobin a1c level
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169 | 121 | $51.91 | $9.52 |
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81001
Manual urinalysis test with examination using microscope, automated
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130 | 117 | $37.83 | $3.11 |
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84460
Liver enzyme (sgpt), level
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104 | 99 | $29.93 | $5.19 |
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84153
Psa (prostate specific antigen) measurement, total
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76 | 65 | $170.87 | $18.02 |
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84443
Blood test, thyroid stimulating hormone (tsh)
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69 | 60 | $85.83 | $16.46 |
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91322
Sarscov2 vac 50 mcg/0.5ml im
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61 | 58 | $417.62 | $155.39 |
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90480
Admn sarscov2 vacc 1 dose
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59 | 56 | $116.92 | $40.56 |
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90673
Influenza vaccine, trivalent derived from recombinant dna
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55 | 55 | $130.00 | $81.82 |
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G0008
Administration of influenza virus vaccine
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55 | 54 | $61.96 | $30.42 |
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84439
Thyroxine (thyroid chemical), free
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44 | 39 | $367.00 | $8.84 |
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77063
Screening 3d breast mammography
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40 | 40 | $188.70 | $51.00 |
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77067
Screening mammography
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40 | 40 | $465.30 | $124.99 |
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99211
Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional
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38 | 20 | $63.00 | $22.52 |
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G0103
Prostate cancer screening; prostate specific antigen test (psa)
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34 | 34 | $170.56 | $18.92 |
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83540
Iron level
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32 | 19 | $41.69 | $6.34 |
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83550
Iron binding capacity
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31 | 18 | $60.74 | $8.57 |
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85652
Red blood cell sedimentation rate, to detect inflammation, automated
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31 | 16 | $20.90 | $2.65 |
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85025
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count
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27 | 20 | $50.70 | $7.61 |
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86140
Measurement c-reactive protein for detection of infection or inflammation
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27 | 13 | $116.41 | $5.08 |
(top 25 shown)
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 |
|---|---|---|---|---|---|
| Atorvastatin Calcium | Atorvastatin Calcium | 407 | 31,150 | $4,505.44 | 105 |
| Amlodipine Besylate | Amlodipine Besylate | 318 | 23,350 | $2,729.71 | 84 |
| Simvastatin | Simvastatin | 299 | 23,245 | $3,221.51 | 71 |
| Levothyroxine Sodium | Levothyroxine Sodium | 285 | 22,547 | $3,528.32 | 75 |
| Losartan Potassium | Losartan Potassium | 282 | 22,068 | $3,427.52 | 74 |
| Eliquis | Apixaban | 266 | 12,737 | $248,846.67 | 41 |
| Omeprazole | Omeprazole | 240 | 16,910 | $4,098.33 | 67 |
| Metoprolol Succinate | Metoprolol Succinate | 222 | 15,360 | $3,415.11 | 55 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 197 | 16,513 | $2,244.36 | 56 |
| Lisinopril | Lisinopril | 186 | 15,372 | $1,628.73 | 55 |
| Lorazepam | Lorazepam | 167 | 4,598 | $1,003.19 | 38 |
| Hydrochlorothiazide | Hydrochlorothiazide | 163 | 12,935 | $737.98 | 42 |
| Furosemide | Furosemide | 154 | 8,934 | $1,048.33 | 38 |
| Tamsulosin Hcl | Tamsulosin Hcl | 145 | 10,486 | $2,265.17 | 41 |
| Gabapentin | Gabapentin | 136 | 6,920 | $2,498.33 | 32 |
| Metformin Hcl | Metformin Hcl | 136 | 10,845 | $957.46 | 36 |
| Sertraline Hcl | Sertraline Hcl | 130 | 7,898 | $1,404.45 | 32 |
| Metoprolol Tartrate | Metoprolol Tartrate | 124 | 9,514 | $907.21 | 34 |
| Escitalopram Oxalate | Escitalopram Oxalate | 123 | 9,643 | $2,110.61 | 32 |
| Trazodone Hcl | Trazodone Hcl | 111 | 7,609 | $1,203.21 | 30 |
| Zolpidem Tartrate | Zolpidem Tartrate | 105 | 4,023 | $921.02 | 21 |
| Fluticasone Propionate | Fluticasone Propionate | 87 | 4,785 | $2,197.82 | 26 |
| Citalopram Hbr | Citalopram Hydrobromide | 85 | 5,313 | $1,126.84 | 19 |
| Irbesartan | Irbesartan | 83 | 6,777 | $1,226.40 | 25 |
| Allopurinol | Allopurinol | 81 | 5,741 | $865.04 | 20 |
(top 25 shown)
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
I20100526000003
WI
7618972118
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.
Obstetrics & Gynecology
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Obstetrics & Gynecology
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Osteopathic Medicine (D.O.)
Internal Medicine
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated April 06, 2006.
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 August 2026.
NPI Administrative Meta
Other Internal Medicine Providers in Madison
- Andrew Coyle
- Nicoll Martins-Manhica
- Dr. Chad Schneider, MD
- Dr. Andrew Nickel, MD
- Dr. Thomas Shiffler, MD
- Dr. Diana Choles, MD
Mailing Address
4410 Regent St
Madison, WI 537054901
Phone: 6082339746