Dr. John P Mitchell , MD
Ophthalmology โข Marshfield, WI
1000 N Oak Ave
Marshfield, WI 544495703
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 July 18, 2006; this date does not establish years in practice.
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Published CMS data list 367 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:
- 99214 โ Established patient outpatient office visit: 90 service units.
- 92134 โ Imaging of retina: 64 service units.
- 92083 โ Exam of visual field with extended testing: 62 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 8 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 582 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:
- Latanoprost โ 259 prescription fills, including refills.
- Timolol Maleate โ 89 prescription fills, including refills.
- Brimonidine Tartrate โ 80 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 9 records in the table ยท Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 85% of clinicians listed under Ophthalmology in Wisconsin (2024, 249 clinicians with data). Median for this group: 1,563. Middle half: 755 to 2,396.
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 428 in 2020 to 367 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
1000 N Oak Ave
Marshfield, WI 544495703
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: Mchs Hospitals Inc. 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
1973
What Public CMS Data Show
Ophthalmology: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
163 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 $23,073 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 $16,584 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
984 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
$20,328 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.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $16.96 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.
Years since graduation
53 years (graduated 1973)
CMS Doctors and Clinicians data list 1973 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
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.
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
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. Mitchell 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. Mitchell 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 Marshfield and Wisconsin
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 85% of clinicians listed under Ophthalmology in Wisconsin (2024, 249 clinicians with data). Median for this group: 1,563. Middle half: 755 to 2,396.
Too few clinicians listed under Ophthalmology in Marshfield have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A lower Medicare-allowed amount than 85% of clinicians listed under Ophthalmology in Wisconsin (2024, 249 clinicians with data). Median for this group: $177,576. Middle half: $72,724 to $293,146.
Too few clinicians listed under Ophthalmology in Marshfield have Medicare Part B data for 2024 to compare.
Paid by Medicare
A lower Medicare payment amount than 85% of clinicians listed under Ophthalmology in Wisconsin (2024, 249 clinicians with data). Median for this group: $130,282. Middle half: $53,426 to $214,805.
Too few clinicians listed under Ophthalmology in Marshfield have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
Fewer Part D prescriptions than 60% of clinicians listed under Ophthalmology in Wisconsin (2024, 272 clinicians with data). Median for this group: 951. Middle half: 305 to 1,831.
Too few clinicians listed under Ophthalmology in Marshfield have Medicare Part D data for 2024 to compare.
Part D drug cost
A lower Part D drug cost than 65% of clinicians listed under Ophthalmology in Wisconsin (2024, 272 clinicians with data). Median for this group: $49,043. Middle half: $9,350 to $136,096.
Too few clinicians listed under Ophthalmology in Marshfield have Medicare Part D data for 2024 to compare.
10 active clinicians are listed under Ophthalmology with a practice address in Marshfield, WI (441 in Wisconsin).
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 14% from 428 in 2020 to 367 in 2024.
- 2020: 428
- 2021: 351
- 2022: 604
- 2023: 398
- 2024: 367
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Medicare-allowed amount
Medicare-allowed amount decreased 44% from $40,846 in 2020 to $23,073 in 2024.
- 2020: $40,846
- 2021: $23,844
- 2022: $38,714
- 2023: $25,713
- 2024: $23,073
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Paid by Medicare
Paid by Medicare decreased 37% from $26,504 in 2020 to $16,584 in 2024.
- 2020: $26,504
- 2021: $17,814
- 2022: $27,937
- 2023: $18,832
- 2024: $16,584
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 78% from 2,627 in 2020 to 582 in 2024.
- 2020: 2,627
- 2021: 512
- 2022: 790
- 2023: 813
- 2024: 582
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30-day fills
30-day fills decreased 70% from 3,333 in 2020 to 984 in 2024.
- 2020: 3,333
- 2021: 829
- 2022: 1,378
- 2023: 1,357
- 2024: 984
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Part D drug cost
Part D drug cost decreased 95% from $409,648 in 2020 to $20,328 in 2024.
- 2020: $409,648
- 2021: $55,950
- 2022: $41,343
- 2023: $42,527
- 2024: $20,328
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $180.13 in 2019 to $16.96 in 2025.
- 2019: $180.13
- 2020: $97.98
- 2024: $74.61
- 2025: $16.96
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 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 2025 (payments made January 1 โ December 31, 2025): fewer than 11 records totaling $16.96.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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LUMIGAN | General | $16.96 |
Source: CMS Open Payments, program year 2025, 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 2016โ2023 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, 2017โ2024; 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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90 | 81 | $265.73 | $90.43 |
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92134
Imaging of retina
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64 | 63 | $84.30 | $23.34 |
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92083
Exam of visual field with extended testing
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62 | 55 | $81.10 | $25.25 |
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92133
Imaging of optic nerve
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54 | 48 | $81.10 | $20.08 |
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99215
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
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46 | 45 | $449.14 | $133.69 |
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99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
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21 | 21 | $629.10 | $123.32 |
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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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15 | 15 | $503.25 | $75.67 |
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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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15 | 13 | $173.33 | $61.11 |
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 |
|---|---|---|---|---|---|
| Latanoprost | Latanoprost | 259 | 11,086 | $2,749.89 | 62 |
| Timolol Maleate | Timolol Maleate | 89 | 6,095 | $2,667.08 | 29 |
| Brimonidine Tartrate | Brimonidine Tartrate | 80 | 3,558 | $3,278.41 | 21 |
| Dorzolamide-Timolol | Dorzolamide Hcl/Timolol Maleat | 60 | 3,741 | $834.94 | 20 |
| Dorzolamide Hcl | Dorzolamide Hcl | 26 | 1,366 | $582.54 | โ |
| Erythromycin | Erythromycin Base | 22 | 295 | $258.47 | 12 |
| Travoprost | Travoprost | 22 | 1,110 | $2,611.18 | โ |
| Prednisolone Acetate | Prednisolone Acetate | 13 | 515 | $475.60 | โ |
| Restasis | Cyclosporine | 11 | 330 | $6,869.40 | โ |
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: 2023-12-18NUCC Taxonomy Code: 207W00000X
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.
NUCC Taxonomy Code: 207W00000X
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - OPHTHALMOLOGY
I20201026001625
WI
5395730998
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
Mchs Hospitals Inc
1000 N Oak Ave, Marshfield, WI 544495703
Phone: 7153875511
Mchs Hospitals Inc
1000 N Oak Ave, Marshfield, WI 544495703
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
Certified Registered Nurse Anesthetist
Orthopaedic Surgery
Doctor of Medicine (M.D.)
Surgery - Trauma Surgery
Doctor of Medicine (M.D.)
Pathology - Anatomic Pathology & Clinical Pathology
Doctor of Medicine (M.D.)
Nurse Practitioner - Gerontology
Nurse Practitioner
Nurse Practitioner
Nurse Practitioner
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 1000 N OAK AVE, MARSHFIELD, WI 544495703 (Tel: 7153875511)
Registered at 1000 N OAK AVE, MARSHFIELD, WI 544495703 (Tel: 7153875511)
Ophthalmology (license number reported to NPPES: WI 73876)
NPI status registered as active in NPPES database
Registered at 226 W 135TH ST, NEW YORK, NY 100302802 (Tel: 2122818400)
Registered at 52 E 72ND ST, NEW YORK, NY 100214266 (Tel: 2124399600)
Recorded as JOHN MITCHELL, M.D.
Ophthalmology (license number reported to NPPES: NY 120632)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Ophthalmology Specialists in Marshfield
- Dr. Scott Paulman, MD
- Dr. Simran Soni, MD
- Dr. Dennis Anderson, MD
- Dr. Giancarlo Garcia, MD
- Dr. Asha Okorie, MD
- Dr. James Holzberger, MD
Mailing Address
1000 N Oak Ave
Marshfield, WI 544495703
Phone: 7153875511