Lena Dennison, MD
NPI 1255917290 · Family Medicine Physician · Lake Forest, IL
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lena Dennison, MD is a Family Medicine Physician provider in Lake Forest, IL (NPI 1255917290).
Provider details
- NPI number
- 1255917290
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 2 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Atorvastatin Calcium | 18 |
| Amlodipine Besylate | 14 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-03-21
- Last updated
- 2021-06-17
- Certified
- 2021-06-17
Frequently asked questions
- What is Lena Dennison's NPI number?
- Lena Dennison's National Provider Identifier (NPI) is 1255917290, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lena Dennison's specialty?
- Lena Dennison is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Lena Dennison located?
- Lena Dennison's practice location on file with NPPES is 1000 N Westmoreland Rd, Lake Forest, IL 60045-1658.
- What is Lena Dennison's phone number?
- The practice phone number listed in the NPPES registry for Lena Dennison is (847) 234-5600.
- Does Lena Dennison accept Medicare?
- Lena Dennison is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lena Dennison's NPI active?
- Yes — Lena Dennison's NPI (1255917290) is active in the NPPES registry as of the last update on 2021-06-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.