Mariani Salazar Leon, MD
NPI 1871080663 · Internal Medicine Physician · Oak Lawn, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mariani Salazar Leon, MD is a Internal Medicine Physician provider in Oak Lawn, IL (NPI 1871080663).
Provider details
- NPI number
- 1871080663
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
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 tenure28% of score
8 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
694 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 474 | $119 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 95 | $115 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 81 | $175 |
| Advance Care Planning, First 30 Minutes99497 | 44 | $78 |
Typical Medicare-allowed amounts for these services range $78–$175 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 28 | 28 |
| Amlodipine Besylate | 20 | 17 |
| Gabapentin | 20 | 15 |
| Prednisone | 14 | 13 |
| Atorvastatin Calcium | 13 | 11 |
| Cefdinir | 11 | 11 |
| Apixaban |
Practice location
Mailing address
Additional practice locations (1)
- 836 W Wellington AveChicago, IL 60657-5147Phone: (773) 975-1600Fax: (773) 296-5265
Registry dates
- Enumerated
- 2018-04-17
- Last updated
- 2022-04-20
- Certified
- 2022-04-20
Frequently asked questions
- What is Mariani Salazar Leon's NPI number?
- Mariani Salazar Leon's National Provider Identifier (NPI) is 1871080663, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mariani Salazar Leon's specialty?
- Mariani Salazar Leon is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mariani Salazar Leon located?
- Mariani Salazar Leon's practice location on file with NPPES is 4440 W 95th St, Oak Lawn, IL 60453-2600.
- What is Mariani Salazar Leon's phone number?
- The practice phone number listed in the NPPES registry for Mariani Salazar Leon is (773) 677-8380.
- Does Mariani Salazar Leon accept Medicare?
- Mariani Salazar Leon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mariani Salazar Leon's NPI active?
- Yes — Mariani Salazar Leon's NPI (1871080663) is active in the NPPES registry as of the last update on 2022-04-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.