Margaret Keller, APN-CNP
NPI 1063742963 · Nurse Practitioner · Glenview, IL
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Keller, APN-CNP is a Nurse Practitioner provider in Glenview, IL (NPI 1063742963).
Provider details
- NPI number
- 1063742963
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APN-CNP
- Sex
- Female
- Sole proprietor
- No
- License
- 041355500 (IL)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
16 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
213 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 194 | $86 |
| Biopsy of Bone Marrow38221 | 19 | $62 |
Typical Medicare-allowed amounts for these services range $62–$86 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$45 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
Additional practice locations (2)
- 2180 Pfingsten RdGlenview, IL 60026Phone: (847) 503-1000
- 2180 Pfingsten RdGlenview, IL 60026-1339Phone: (847) 503-1000Fax: (847) 503-1100
Registry dates
- Enumerated
- 2009-12-28
- Last updated
- 2019-10-14
Frequently asked questions
- What is Margaret Keller's NPI number?
- Margaret Keller's National Provider Identifier (NPI) is 1063742963, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Keller's specialty?
- Margaret Keller is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Margaret Keller located?
- Margaret Keller's practice location on file with NPPES is 2180 Pfingsten Rd, Glenview, IL 60026.
- What is Margaret Keller's phone number?
- The practice phone number listed in the NPPES registry for Margaret Keller is (847) 503-1000.
- Does Margaret Keller accept Medicare?
- Margaret Keller is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Keller's NPI active?
- Yes — Margaret Keller's NPI (1063742963) is active in the NPPES registry as of the last update on 2019-10-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.