Katherine Marek, DNP, FNP-BC
NPI 1558384883 · Family Nurse Practitioner · Maywood, IL
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Marek, DNP, FNP-BC is a Family Nurse Practitioner provider in Maywood, IL (NPI 1558384883).
Provider details
- NPI number
- 1558384883
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- DNP, FNP-BC
- Sex
- Female
- Sole proprietor
- No
- License
- 209004004 (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 tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$25 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
- 2006-07-26
- Last updated
- 2021-04-20
- Certified
- 2021-04-20
Frequently asked questions
- What is Katherine Marek's NPI number?
- Katherine Marek's National Provider Identifier (NPI) is 1558384883, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Marek's specialty?
- Katherine Marek is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Katherine Marek located?
- Katherine Marek's practice location on file with NPPES is 2160 S 1st Ave Bldg 54, Maywood, IL 60153-3328.
- What is Katherine Marek's phone number?
- The practice phone number listed in the NPPES registry for Katherine Marek is (708) 216-3135.
- Does Katherine Marek accept Medicare?
- Katherine Marek is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Marek's NPI active?
- Yes — Katherine Marek's NPI (1558384883) is active in the NPPES registry as of the last update on 2021-04-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.