Maggie Chacko, MD
NPI 1417993734 · Internal Medicine Physician · Elmhurst, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maggie Chacko, MD is a Internal Medicine Physician provider in Elmhurst, IL (NPI 1417993734).
Provider details
- NPI number
- 1417993734
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 036098672 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,048 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 160 | $191 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 136 | $134 |
| Automated Urinalysis Test81003 | 132 | $2 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 124 | $139 |
| Advance Care Planning, First 30 Minutes99497 | 121 | $87 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 94 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 95 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 285 | 94 |
| Montelukast Sodium | 232 | 83 |
| Levothyroxine Sodium | 204 | 51 |
| Amlodipine Besylate | 194 | 56 |
| Simvastatin | 161 | 46 |
| Lisinopril | 150 | 44 |
| Metformin Hcl | 144 |
Practice location
Mailing address
Additional practice locations (2)
- 429 N York StElmhurst, IL 60126-2003Phone: (331) 221-4350
- 3005 Wolf RdWestchester, IL 60154-5622Phone: (331) 221-4390
Registry dates
- Enumerated
- 2006-06-22
- Last updated
- 2021-04-22
- Certified
- 2021-04-22
Frequently asked questions
- What is Maggie Chacko's NPI number?
- Maggie Chacko's National Provider Identifier (NPI) is 1417993734, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maggie Chacko's specialty?
- Maggie Chacko is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Maggie Chacko located?
- Maggie Chacko's practice location on file with NPPES is 305 N. York Rd, Elmhurst, IL 60126.
- What is Maggie Chacko's phone number?
- The practice phone number listed in the NPPES registry for Maggie Chacko is (331) 221-4350.
- Does Maggie Chacko accept Medicare?
- Maggie Chacko is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maggie Chacko's NPI active?
- Yes — Maggie Chacko's NPI (1417993734) is active in the NPPES registry as of the last update on 2021-04-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.