Nadia Siddiqui, M.D.
NPI 1801052659 · Internal Medicine Physician · Orland Park, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nadia Siddiqui, M.D. is a Internal Medicine Physician provider in Orland Park, IL (NPI 1801052659).
Provider details
- NPI number
- 1801052659
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 036126158 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
17 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,945 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 376 | $132 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 368 | $9 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 296 | $10 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 270 | $8 |
| Blood Test, Thyroid Stimulating Hormone (tsh)84443 | 250 | $16 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 248 | $13 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 119 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 724 | 224 |
| Amlodipine Besylate | 492 | 164 |
| Levothyroxine Sodium | 479 | 141 |
| Losartan Potassium | 391 | 104 |
| Metoprolol Succinate | 290 | 86 |
| Metformin Hcl | 233 | 74 |
| Pantoprazole Sodium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$826 across 33 records (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
- 2008-07-31
- Last updated
- 2018-03-01
Frequently asked questions
- What is Nadia Siddiqui's NPI number?
- Nadia Siddiqui's National Provider Identifier (NPI) is 1801052659, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nadia Siddiqui's specialty?
- Nadia Siddiqui is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nadia Siddiqui located?
- Nadia Siddiqui's practice location on file with NPPES is 15300 West Ave, Orland Park, IL 60462-4600.
- What is Nadia Siddiqui's phone number?
- The practice phone number listed in the NPPES registry for Nadia Siddiqui is (708) 226-2440.
- Does Nadia Siddiqui accept Medicare?
- Nadia Siddiqui is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nadia Siddiqui's NPI active?
- Yes — Nadia Siddiqui's NPI (1801052659) is active in the NPPES registry as of the last update on 2018-03-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.