1. Home
  2. Directory
  3. Illinois
  4. Lake Forest
  5. Family Medicine
  6. NPI Profile

LENA FRANZISKA DENNISON MD
NPI 1255917290
Family Medicine in Lake Forest, IL

Active since March 21, 2021PECOS EnrolledAccepts Medicare Assignment
1000 N WESTMORELAND RD, LAKE FOREST, IL 60045(847) 234-5600 Get Directions Write a Review

NPPES record last updated: June 17, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jun 17, 2021, Mar 21, 2021 (2 updates tracked since 2021).

About Lena Franziska Dennison Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

LENA FRANZISKA DENNISON MD (NPI 1255917290) is an individual family medicine provider in Lake Forest, Illinois, licensed in Illinois (125078416) and active in the NPI registry since March 2021. She is enrolled in Medicare PECOS and is a graduate of Oakland Univ, William Beaumont School Of Medicine (2021).

NPPES Registry Identity

NPI1255917290
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameLENA FRANZISKA DENNISONCredential: MD
Location Address1000 N WESTMORELAND RDLake Forest, IL 60045-1658
Mailing Address1000 N Westmoreland RdLake Forest, IL 60045-1658
Phone(847) 234-5600
Sole ProprietorNo
Medical School CMSOakland Univ, William Beaumont School Of MedicineGraduated 2021
Enumeration DateMarch 21, 2021
Last NPPES UpdateJune 17, 20212 updates tracked since enumeration
NPPES CertifiedJune 17, 2021
✔ NPI 1255917290 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in IL · 125078416
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
1000 N WESTMORELAND RD, Lake Forest, IL 60045
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Lena Franziska Dennison Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1557762705
PECOS Enrollment IDI20240911000276
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Lena Dennison reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Erie Family Health Center Inc
17 mi
Federally Qualified Health Center (FQHC)
1285 HARTREY
Evanston, IL 60202
  • Reassigned Medicare billing, Illinois enrollment
  • 383 clinicians in this Medicare group
NPI 1629328836 (312) 666-3494

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60045 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$93.02 typical visit price
range $59.81 – $181.38
Typical copayment $23.25 (range $14.95 – $45.34)
Most-billed visit code 99203
Established Patient
$105.07 typical visit price
range $19.15 – $147.12
Typical copayment $26.26 (range $4.78 – $36.78)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

CONSOLIDATED PATHOLOGY CONSULTANTS SC
Pathology (Anatomic Pathology & Clinical Pathology)
1000 N WESTMORELAND RD
LAKE FOREST, IL 60045
Lake County (847) 996-1030
JENNIFER M NGUYEN MD
Hospitalist
1000 N WESTMORELAND RD
LAKE FOREST, IL 60045
Lake County (847) 234-5600
CAROLINE LANG OVERMAN PT, DPT
Physical Therapist
1000 N WESTMORELAND RD
LAKE FOREST, IL 60045
Lake County (847) 535-6430
CASEY DUGAN PA-C
Physician Assistant
1000 N WESTMORELAND RD
LAKE FOREST, IL 60045
Lake County (847) 582-2134
MRS. TAYLOR MORGAN SARES PA-C
Physician Assistant
1000 N WESTMORELAND RD
LAKE FOREST, IL 60045
Lake County (847) 535-8500
DR. POOJA NAYAK MD
Hospitalist
1000 N WESTMORELAND RD
LAKE FOREST, IL 60045
Lake County (847) 234-5600
ANDREW MIN JUN CHOI MD
Hospitalist
1000 N WESTMORELAND RD
LAKE FOREST, IL 60045
Lake County (847) 234-5600
IRENE ZHU PA-C
Physician Assistant
1000 N WESTMORELAND RD
LAKE FOREST, IL 60045
Lake County (847) 535-7058

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Lena Dennison's NPI number?

The NPI number for Lena Dennison is 1255917290. It was assigned to this individual provider in the NPPES registry on March 21, 2021.

Where is Lena Dennison located?

Lena Dennison practices at 1000 N Westmoreland Rd, Lake Forest, IL 60045. The listed phone number is (847) 234-5600.

What is Lena Dennison's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Lena Dennison enrolled in Medicare?

Yes. Lena Dennison is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Lena Dennison's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Lena Dennison reassigns Medicare benefits to Erie Family Health Center Inc (Evanston, IL). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Lena Dennison's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Lena Dennison accept?

Health plans from Ambetter Health and Ambetter Health of Delaware list Lena Dennison as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Lena Dennison was last updated on June 17, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.