Iwona Lacka, M.D
NPI 1477868958 · Geriatric Medicine (Internal Medicine) Physician · Norwalk, CT
Enrolled with Medicare as Practitioner - Geriatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Iwona Lacka, M.D is a Geriatric Medicine (Internal Medicine) Physician provider in Norwalk, CT (NPI 1477868958).
Provider details
- NPI number
- 1477868958
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Allopathic & Osteopathic Physicians
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
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
430 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 | 136 | $136 |
| Residence Visit for Established Patient With High Level of Medical Decision Making, Per Day, If Using Time, at Least 60 Minutes99350 | 73 | $198 |
| Residence Visit for Established Patient With Low Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99348 | 53 | $82 |
| Administration of Influenza Virus VaccineG0008 | 47 | $34 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 42 | $143 |
| Transitional Care Management Services for Problem of at Least Moderate Complexity99495 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 82 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 157 | 39 |
| Apixabanbrand: Eliquis | 140 | 27 |
| Trazodone Hcl | 114 | 39 |
| Atorvastatin Calcium | 102 | 29 |
| Escitalopram Oxalate | 101 | 23 |
| Amlodipine Besylate | 100 | 25 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-08-09
- Last updated
- 2014-07-22
Frequently asked questions
- What is Iwona Lacka's NPI number?
- Iwona Lacka's National Provider Identifier (NPI) is 1477868958, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Iwona Lacka's specialty?
- Iwona Lacka is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Iwona Lacka located?
- Iwona Lacka's practice location on file with NPPES is 34 Maple St, Norwalk, CT 06850-3815.
- What is Iwona Lacka's phone number?
- The practice phone number listed in the NPPES registry for Iwona Lacka is (203) 852-2025.
- Does Iwona Lacka accept Medicare?
- Iwona Lacka is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Iwona Lacka's NPI active?
- Yes — Iwona Lacka's NPI (1477868958) is active in the NPPES registry as of the last update on 2014-07-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.