Merlyn D'Souza, M.D.
NPI 1578501086 · Legal Medicine · Chicago, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Merlyn D'Souza, M.D. is a Legal Medicine provider in Chicago, IL (NPI 1578501086).
Provider details
- NPI number
- 1578501086
- Entity type
- Individual
- Primary specialty
- Legal MedicineOther Service Providers
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,947 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 1,316 | $77 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, at Least 10 Minutes99307 | 1,005 | $41 |
| Residence Visit for Established Patient With Low Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99348 | 340 | $78 |
| Initial Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 35 Minutes99305 | 135 | $137 |
| Residence Visit for Established Patient With Straightforward Medical Decision Making, Per Day, If Using Time, at Least 15 Minutes99347 | 78 | $46 |
| Nursing Facility Discharge Management, More Than 30 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 109 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Furosemide | 423 | 44 |
| Potassium Chloride | 336 | 41 |
| Atorvastatin Calcium | 298 | 45 |
| Levothyroxine Sodium | 285 | 34 |
| Metoprolol Succinate | 202 | 18 |
| Lisinopril | 170 | 18 |
| Hydralazine Hcl | 169 | 20 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$23 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
Registry dates
- Enumerated
- 2006-06-04
- Last updated
- 2007-10-11
Frequently asked questions
- What is Merlyn D'Souza's NPI number?
- Merlyn D'Souza's National Provider Identifier (NPI) is 1578501086, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Merlyn D'Souza's specialty?
- Merlyn D'Souza is listed in the NPPES registry with a primary specialty of Legal Medicine (Other Service Providers).
- Where is Merlyn D'Souza located?
- Merlyn D'Souza's practice location on file with NPPES is 5600 W Addison St, Chicago, IL 60634-4401.
- What is Merlyn D'Souza's phone number?
- The practice phone number listed in the NPPES registry for Merlyn D'Souza is (773) 202-9622.
- Does Merlyn D'Souza accept Medicare?
- Merlyn D'Souza is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Merlyn D'Souza's NPI active?
- Yes — Merlyn D'Souza's NPI (1578501086) is active in the NPPES registry as of the last update on 2007-10-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.