Cherechi Onyenso, FNP
NPI 1578855219 · Family Nurse Practitioner · Calumet City, IL
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cherechi Onyenso, FNP is a Family Nurse Practitioner provider in Calumet City, IL (NPI 1578855219).
Provider details
- NPI number
- 1578855219
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- 209.008342 (IL)
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 tenure28% of score
15 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
90 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Residence Visit for Established Patient With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99349 | 41 | $111 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 33 | $55 |
| Residence Visit for Established Patient With Low Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99348 | 16 | $66 |
Typical Medicare-allowed amounts for these services range $55–$111 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-05-13
- Last updated
- 2011-05-13
Frequently asked questions
- What is Cherechi Onyenso's NPI number?
- Cherechi Onyenso's National Provider Identifier (NPI) is 1578855219, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cherechi Onyenso's specialty?
- Cherechi Onyenso is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Cherechi Onyenso located?
- Cherechi Onyenso's practice location on file with NPPES is 1473 Ring Ring Road, Calumet City, IL 60409.
- What is Cherechi Onyenso's phone number?
- The practice phone number listed in the NPPES registry for Cherechi Onyenso is (708) 743-3637.
- Does Cherechi Onyenso accept Medicare?
- Cherechi Onyenso is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Cherechi Onyenso's NPI active?
- Yes — Cherechi Onyenso's NPI (1578855219) is active in the NPPES registry as of the last update on 2011-05-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.