John Joseph Flaherty, M.D., MPH
Emergency Medicine · La Crosse, WI
At a glance
1836 South Ave, La Crosse, WI 54601-5429
NPPES record updated Apr 3, 2026. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
1836 South AveLa Crosse, WI 54601-5429
Additional reported practice locations
6565 Americas Pkwy Ne Ste 200Albuquerque, NM 871108172
Phone: 8662732451 115 E College Blvd
Roswell, NM 882015158
Phone: 8662732451 1408 8Th St
Alamogordo, NM 883105115
Phone: 8662732451
Fax: 8666085560 100 Gossett Dr Ste B
Aztec, NM 874104529
Phone: 8662732451 201 N 4Th St
Artesia, NM 882102168
Phone: 8662732451 301 N Canyon St
Carlsbad, NM 882205809
Phone: 8662732451 950 W Aztec Ave
Gallup, NM 873016666
Phone: 8662732451 1012 Marquez Pl Unit 106B
Santa Fe, NM 875051833
Phone: 8662732451 201 E Las Cruces Ave Ste. 1501
Las Cruces, NM 88001
Phone: 8662732451 221 N Kansas St Ste 700
El Paso, TX 799011444
Phone: 8662732451 2705 S Alma School Rd Ste 2
Chandler, AZ 852864400
Phone: 8662732451 2301 E 20Th St
Farmington, NM 874018905
Phone: 8662732451 500 N Hudson St
Silver City, NM 880615435
Phone: 8662732451 1224 W 21St St
Clovis, NM 881014199
Phone: 8662732451
Education & affiliations
- Medical / professional school
- Not reported in this file
- Graduation year
- 1981
- CMS specialties
- Emergency Medicine · Internal Medicine · Pediatric Medicine
Practice groups
Reported hospital affiliations
- Gundersen Lutheran Medical Center La Crosse, WI
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
No matching general-payment summary in the imported release. This is not a verified zero and does not rule out other payment types or years.
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Emergency Medicine
- Taxonomy code
- 207P00000X
- Enumeration date
- Oct 26, 2006
- Record updated
- Apr 3, 2026
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- M.D., MPH
Reported taxonomies and licenses
208D00000X
License reported: MD2022-1413 NM
207P00000X · Primary
License reported: 86972 WI
207P00000X
License reported: 036064476 IL
207P00000X
License reported: 81701 MN
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
1836 South AveLa Crosse, WI 54601-5429
- Phone
- (608) 782-7300
Mailing address
1836 SOUTH AVELA CROSSE, WI 546015429
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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