Marilyn Zwirn, D.O.
NPI 1619079134 · Pediatrics Physician · Libertyville, IL
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marilyn Zwirn, D.O. is a Pediatrics Physician provider in Libertyville, IL (NPI 1619079134).
Provider details
- NPI number
- 1619079134
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- No
- License
- 036073277 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
2 documented practice locations
- 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.
$31 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 (1)
- 1800 Hollister Dr Ste G2Libertyville, IL 60048-5264Phone: (847) 680-8066Fax: (847) 680-8081
Registry dates
- Enumerated
- 2006-09-04
- Last updated
- 2022-06-02
- Certified
- 2022-06-02
Frequently asked questions
- What is Marilyn Zwirn's NPI number?
- Marilyn Zwirn's National Provider Identifier (NPI) is 1619079134, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marilyn Zwirn's specialty?
- Marilyn Zwirn is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Marilyn Zwirn located?
- Marilyn Zwirn's practice location on file with NPPES is 825 S Milwaukee Ave Fl 2, Libertyville, IL 60048-3218.
- What is Marilyn Zwirn's phone number?
- The practice phone number listed in the NPPES registry for Marilyn Zwirn is (847) 680-8066.
- Does Marilyn Zwirn accept Medicare?
- Marilyn Zwirn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marilyn Zwirn's NPI active?
- Yes — Marilyn Zwirn's NPI (1619079134) is active in the NPPES registry as of the last update on 2022-06-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.