John M Evelsizer Olson , PA-C
Physician Assistant - Surgical • Decorah, IA
901 Montgomery St
Decorah, IA 521012325
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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John Evelsizer Olson is listed in NPPES under Physician Assistant - Surgical.
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NPI assigned on July 28, 2010; this date does not establish years in practice.
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Published CMS data list 11 Original Medicare Part B services in 2019.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2019. Published rows only; this is not a quality measure.
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Published Part B service records, 2019:
- 85610 — Blood test, clotting time: 11 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2019. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2018 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2019). CPT notice
See the full table · Guide: How to read Medicare Part B data
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Published CMS data list 261 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:
- Meloxicam — 98 prescription fills, including refills.
- Oxycodone Hcl — 72 prescription fills, including refills.
- Celecoxib — 46 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 5 records in the table · Guide: How to read Medicare Part D prescriber data
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More Part D prescriptions than 65% of clinicians listed under Physician Assistant - Surgical in Iowa (2024, 44 clinicians with data). Median for this group: 115. Middle half: 60 to 331.
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 17 in 2017 to 11 in 2019.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2017–2019.
Practice Location & Contact Primary Location
901 Montgomery St
Decorah, IA 521012325
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Winneshiek Medical Center. 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
University Of Colorado School Of Medicine, Denver
2010
What Public CMS Data Show
Physician Assistant - Surgical: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $47 in 2019
The total amount Medicare approved for these services in 2019. 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, 2019.
Paid by Medicare
About $47 in 2019
The part of the Medicare-allowed amount that Medicare itself paid in 2019, 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, 2019.
30-day fills
267 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
$2,002 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)
No Open Payments records are listed for this clinician for 2021–2025.
Years since graduation
16 years (graduated 2010)
CMS Doctors and Clinicians data list 2010 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
2010
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, “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)
John Evelsizer 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 John Evelsizer 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 Decorah and Iowa
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
More Part D prescriptions than 65% of clinicians listed under Physician Assistant - Surgical in Iowa (2024, 44 clinicians with data). Median for this group: 115. Middle half: 60 to 331.
Too few clinicians listed under Physician Assistant - Surgical in Decorah have Medicare Part D data for 2024 to compare.
Part D drug cost
A higher Part D drug cost than 65% of clinicians listed under Physician Assistant - Surgical in Iowa (2024, 44 clinicians with data). Median for this group: $839. Middle half: $329 to $2,881.
Too few clinicians listed under Physician Assistant - Surgical in Decorah have Medicare Part D data for 2024 to compare.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for John Evelsizer Olson are from 2019.
3 active clinicians are listed under Physician Assistant - Surgical with a practice address in Decorah, IA (58 in Iowa).
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 went from 17 in 2017 to 11 in 2019.
- 2017: 17
- 2018: 79
- 2019: 11
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Medicare-allowed amount
Medicare-allowed amount decreased 95% from $1,010 in 2017 to $47 in 2019.
- 2017: $1,010
- 2018: $2,390
- 2019: $47
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Paid by Medicare
Paid by Medicare went from $800 in 2017 to $47 in 2019.
- 2017: $800
- 2018: $1,564
- 2019: $47
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 23% from 340 in 2020 to 261 in 2024.
- 2020: 340
- 2021: 231
- 2022: 606
- 2023: 447
- 2024: 261
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30-day fills
30-day fills decreased 51% from 545 in 2020 to 267 in 2024.
- 2020: 545
- 2021: 293
- 2022: 791
- 2023: 646
- 2024: 267
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Part D drug cost
Part D drug cost decreased 50% from $4,022 in 2020 to $2,002 in 2024.
- 2020: $4,022
- 2021: $7,590
- 2022: $19,290
- 2023: $13,560
- 2024: $2,002
Sources: CMS Medicare Physician & Other Practitioners (2019), CMS Medicare Part D Prescribers (2024), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2018 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, 2017–2019; 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 |
|---|---|---|---|---|
|
85610
Blood test, clotting time
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11 | 11 | $61.73 | $4.28 |
Source: CMS Part B by Provider and Service, 2019; 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 |
|---|---|---|---|---|---|
| Meloxicam | Meloxicam | 98 | 2,940 | $255.02 | 44 |
| Oxycodone Hcl | Oxycodone Hcl | 72 | 341 | $300.75 | 50 |
| Celecoxib | Celecoxib | 46 | 1,471 | $1,346.09 | 16 |
| Tramadol Hcl | Tramadol Hcl | 32 | 262 | $61.13 | 18 |
| Prednisone | Prednisone | 13 | 188 | $38.67 | 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: 2025-01-13NUCC Taxonomy Code: 363AS0400X
NUCC Taxonomy Code: 363AM0700X
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICIAN ASSISTANT
I20170113001883
MN
5496940090
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
Winneshiek Medical Center
112 Jefferson St, West Union, IA 521751022
Phone: 5634223811
Winneshiek Medical Center
901 Montgomery St, Decorah, IA 521012325
Phone: 5633873000
Winneshiek Medical Center
901 Montgomery St, Decorah, IA 521012325
Phone: 5633822911
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 Anesthetist, Certified Registered
Physical Therapist
Physical Therapist, Doctor of Physical Therapy, SCS
Nurse Practitioner
Family Nurse Practitioner
Obstetrics & Gynecology
Doctor of Medicine (M.D.)
Physician Assistant - Surgical
Physician Assistant (Certified)
Emergency Medicine
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated July 28, 2010.
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 Physician Assistant - Surgicals in Decorah
Mailing Address
901 Montgomery St
Decorah, IA 521012325
Phone: 5633822911