Alyssa O'Connor, APNP
NPI 1245588284 · Nurse Practitioner · Milwaukee, WI
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alyssa O'Connor, APNP is a Nurse Practitioner provider in Milwaukee, WI (NPI 1245588284).
Provider details
- NPI number
- 1245588284
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APNP
- Sex
- Female
- Sole proprietor
- No
- License
- 5032-033 (WI)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
13 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
416 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 86 | $143 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 79 | $113 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 40 | $73 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 31 | $52 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 24 | $102 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 276 | 143 |
| Apixabanbrand: Eliquis | 248 | 104 |
| Amiodarone Hcl | 209 | 109 |
| Dofetilide | 88 | 45 |
| Sotalol Hclbrand: Sotalol | 53 | 27 |
| Flecainide Acetate | 40 | 20 |
| Rivaroxabanbrand: Xarelto | 33 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$105 across 5 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (3)
- 4805 S Moorland RdNew Berlin, WI 53151-7401Phone: (262) 798-7200Fax: (262) 798-7271
- 7901 S 6th StElectrophysiologyOak Creek, WI 53154-2010Phone: (414) 346-8000Fax: (414) 346-8010
- 1700 W Paradise DrWest Bend, WI 53095-9795Phone: (262) 334-3451Fax: (262) 347-3044
Registry dates
- Enumerated
- 2012-08-23
- Last updated
- 2024-03-06
- Certified
- 2024-03-04
Frequently asked questions
- What is Alyssa O'Connor's NPI number?
- Alyssa O'Connor's National Provider Identifier (NPI) is 1245588284, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alyssa O'Connor's specialty?
- Alyssa O'Connor is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Alyssa O'Connor located?
- Alyssa O'Connor's practice location on file with NPPES is 9200 W Wisconsin Ave, Milwaukee, WI 53226-3522.
- What is Alyssa O'Connor's phone number?
- The practice phone number listed in the NPPES registry for Alyssa O'Connor is (414) 805-6000.
- Does Alyssa O'Connor accept Medicare?
- Alyssa O'Connor is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alyssa O'Connor's NPI active?
- Yes — Alyssa O'Connor's NPI (1245588284) is active in the NPPES registry as of the last update on 2024-03-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.