What is Guy O'Connor's NPI number?

Guy O'Connor's National Provider Identifier (NPI) is 1144333519, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Guy O'Connor's specialty?

Guy O'Connor is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).

Where is Guy O'Connor located?

Guy O'Connor's practice location on file with NPPES is 2300 Western Ave, Manitowoc, WI 54220-3712.

What is Guy O'Connor's phone number?

The practice phone number listed in the NPPES registry for Guy O'Connor is (920) 320-2011.

Is Guy O'Connor's NPI active?

Yes — Guy O'Connor's NPI (1144333519) is active in the NPPES registry as of the last update on 2011-06-29.

IndividualActive

Guy O'Connor, M.D.

NPI 1144333519 · Emergency Medicine Physician · Manitowoc, WI

Guy O'Connor, M.D. is a Emergency Medicine Physician provider in Manitowoc, WI (NPI 1144333519).

Provider details

NPI number: 1144333519
Entity type: Individual
Primary specialty: Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Male
Sole proprietor: No
License: 26328-020 (WI)

Specialties & taxonomies

Emergency Medicine PhysicianPrimary207P00000XLicense 26328-020 (WI)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(90/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
19 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

2300 Western Ave

Manitowoc, WI 54220-3712

Phone: (920) 320-2011

Street-level locationGet directions

More WI providers

Mailing address

Po Box 1596

Manitowoc, WI 54221-1596

Enumerated: 2006-08-17
Last updated: 2011-06-29

Frequently asked questions

What is Guy O'Connor's NPI number?: Guy O'Connor's National Provider Identifier (NPI) is 1144333519, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Guy O'Connor's specialty?: Guy O'Connor is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
Where is Guy O'Connor located?: Guy O'Connor's practice location on file with NPPES is 2300 Western Ave, Manitowoc, WI 54220-3712.
What is Guy O'Connor's phone number?: The practice phone number listed in the NPPES registry for Guy O'Connor is (920) 320-2011.
Is Guy O'Connor's NPI active?: Yes — Guy O'Connor's NPI (1144333519) is active in the NPPES registry as of the last update on 2011-06-29.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.