Robert O. Funk, MD
Ophthalmology Physician · La Crosse, WI
Robert O. Funk, MD is an ophthalmology physician with a practice address in La Crosse, Wisconsin, and NPI 1356845614, issued on Mar 21, 2018. Check the license (Wisconsin 77139, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Robert O. Funk
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License numbers
- 77139 WI
65841 MN
Self-reported in NPPES; status is on the state search - Practice location
- 1836 South Ave, La Crosse, WI 54601
- Phone
- (608) 782-7300
- Enumerated
- Mar 21, 2018
- Record last updated
- Aug 3, 2022
- Medicare enrollment
- Enrolled (PECOS I20231216000297); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 441 in Wisconsin → Look up another NPI →
Also registered at 1836 South Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Robert O. Funk in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 77139Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average ophthalmology physician in 2024
297 Medicare Part D claims for 66 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.
Most prescribed
- Latanoprost99 claims
- Timolol Maleate65 claims
- Dorzolamide-Timolol25 claims
- Prednisolone Acetate17 claims
- Dorzolamide Hcl15 claims
- Ketorolac Tromethamine13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through 2 group practices
- Gundersen Clinic LtdWaukon, IA
- Gundersen Lutheran Medical Center IncLa Crosse, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Robert O. Funk among 441 ophthalmology physician records in Wisconsin
Robert O. Funk, MD is one of 441 ophthalmology physician records with a practice address in Wisconsin. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 90% of them.
- NPI issued2018 · 90% of these records are older, 8% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2018 · median 2005 among the 259 with a school on file
- Record last updated2022 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in Wisconsin
There are 441 ophthalmology physician records in Wisconsin.
All 441 in Wisconsin → Every provider in La Crosse → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Elizabeth Ault-Brinker, MDLa Crosse, WI 546011528060738
- Christopher Born, MDLa Crosse, WI 546011134123805
- Stephen Brubaker, MDLa Crosse, WI 546011962406520
- Efrain Cancel, MDLa Crosse, WI 546011972619419
- Jay Erie, M.D.La Crosse, WI 546011336127646
- Suzanne Falkenberry, MDLa Crosse, WI 546011780730390
- Michael Garvey, MDLa Crosse, WI 546011477617892
- Jennifer Garvey, MDLa Crosse, WI 546011346445632
Common questions
What is Robert O. Funk, MD's NPI number?
Robert O. Funk, MD's National Provider Identifier (NPI) is 1356845614, issued on Mar 21, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Robert O. Funk, MD located?
The NPPES record lists a practice address at 1836 South Ave, La Crosse, WI, 54601. Phone: (608) 782-7300. Providers update this record themselves, so call before visiting.
How can I verify Robert O. Funk, MD's license?
NPPES lists Wisconsin license number 77139, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Robert O. Funk, MD prescribe under Medicare Part D?
In 2024, Robert O. Funk, MD had 297 Medicare Part D claims for 66 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.