Syed Ahmed, MD
NPI 1689867541 · Medical Oncology Physician · Oak Brook, IL
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Syed Ahmed, MD is a Medical Oncology Physician provider in Oak Brook, IL (NPI 1689867541).
Provider details
- NPI number
- 1689867541
- Entity type
- Individual
- Primary specialty
- Medical Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036-113652 (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
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,726 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 352 | $9 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 285 | $17 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 249 | $183 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 157 | $131 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 100 | $132 |
| Injection of Additional New Drug Or Substance Into Vein |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prochlorperazine Maleate | 40 | 29 |
| Apixabanbrand: Eliquis | 37 | 13 |
| Prednisone | 31 | 18 |
| Ondansetronbrand: Ondansetron Odt | 20 | 18 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 19 | — |
| Dexamethasone | 18 | 14 |
| Bicalutamide |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$382 across 4 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
Additional practice locations (1)
- 1800 Hollister DrSuite 112Libertyville, IL 60048-5263Phone: (847) 367-6781Fax: (847) 367-7384
Registry dates
- Enumerated
- 2007-08-23
- Last updated
- 2023-12-06
- Certified
- 2023-12-06
Frequently asked questions
- What is Syed Ahmed's NPI number?
- Syed Ahmed's National Provider Identifier (NPI) is 1689867541, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Syed Ahmed's specialty?
- Syed Ahmed is listed in the NPPES registry with a primary specialty of Medical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Syed Ahmed located?
- Syed Ahmed's practice location on file with NPPES is 1001 Commerce Dr Ste 700, Oak Brook, IL 60523-8865.
- What is Syed Ahmed's phone number?
- The practice phone number listed in the NPPES registry for Syed Ahmed is (331) 732-4490.
- Does Syed Ahmed accept Medicare?
- Syed Ahmed is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Syed Ahmed's NPI active?
- Yes — Syed Ahmed's NPI (1689867541) is active in the NPPES registry as of the last update on 2023-12-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.