Mary Joyce-Cahill, APN-CNP
NPI 1790178671 · Nurse Practitioner · Evanston, IL
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Joyce-Cahill, APN-CNP is a Nurse Practitioner provider in Evanston, IL (NPI 1790178671).
Provider details
- NPI number
- 1790178671
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APN-CNP
- Sex
- Female
- Sole proprietor
- Yes
- License
- 209012437 (IL)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
11 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
198 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) |
|---|---|---|
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 54 | $44 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 48 | $69 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 36 | $152 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 34 | $116 |
| Advance Care Planning, First 30 Minutes99497 | 15 | $66 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$39 across 1 record (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
Registry dates
- Enumerated
- 2015-03-16
- Last updated
- 2025-08-11
- Certified
- 2025-08-11
Frequently asked questions
- What is Mary Joyce-Cahill's NPI number?
- Mary Joyce-Cahill's National Provider Identifier (NPI) is 1790178671, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Joyce-Cahill's specialty?
- Mary Joyce-Cahill is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Joyce-Cahill located?
- Mary Joyce-Cahill's practice location on file with NPPES is 2650 Ridge Ave, Evanston, IL 60201-1700.
- What is Mary Joyce-Cahill's phone number?
- The practice phone number listed in the NPPES registry for Mary Joyce-Cahill is (847) 503-4222.
- Does Mary Joyce-Cahill accept Medicare?
- Mary Joyce-Cahill is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Joyce-Cahill's NPI active?
- Yes — Mary Joyce-Cahill's NPI (1790178671) is active in the NPPES registry as of the last update on 2025-08-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.