Nanzeen Sayef, M.D.
NPI 1003827411 · Internal Medicine Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nanzeen Sayef, M.D. is a Internal Medicine Physician provider in Chicago, IL (NPI 1003827411).
Provider details
- NPI number
- 1003827411
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 036-083499 (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
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
450 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 172 | $133 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 96 | $9 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 72 | $93 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 64 | $133 |
| Administration of Influenza Virus VaccineG0008 | 31 | $34 |
| Admn Sarscov2 Vacc 1 Dose90480 | 15 | $45 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 99 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 612 | 187 |
| Amlodipine Besylate | 582 | 160 |
| Metoprolol Succinate | 374 | 108 |
| Losartan Potassium | 295 | 87 |
| Hydrochlorothiazide | 255 | 79 |
| Lisinopril | 206 | 55 |
| Allopurinol | 156 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-10
- Last updated
- 2021-12-16
- Certified
- 2021-12-16
Frequently asked questions
- What is Nanzeen Sayef's NPI number?
- Nanzeen Sayef's National Provider Identifier (NPI) is 1003827411, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nanzeen Sayef's specialty?
- Nanzeen Sayef is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nanzeen Sayef located?
- Nanzeen Sayef's practice location on file with NPPES is 2535 S King Dr, Chicago, IL 60616-4746.
- What is Nanzeen Sayef's phone number?
- The practice phone number listed in the NPPES registry for Nanzeen Sayef is (312) 842-7117.
- Does Nanzeen Sayef accept Medicare?
- Nanzeen Sayef is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nanzeen Sayef's NPI active?
- Yes — Nanzeen Sayef's NPI (1003827411) is active in the NPPES registry as of the last update on 2021-12-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.