Katayoun Rezai, M.D.
NPI 1730111576 · Infectious Disease Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Infectious Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katayoun Rezai, M.D. is a Infectious Disease Physician provider in Chicago, IL (NPI 1730111576).
Provider details
- NPI number
- 1730111576
- Entity type
- Individual
- Primary specialty
- Infectious Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 036-104419 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
11 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) |
|---|---|---|
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 11 | $136 |
Typical Medicare-allowed amounts for these services range $136–$136 (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 · 25 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Bictegrav/Emtricit/Tenofov Alabrand: Biktarvy | 81 |
| Elviteg/Cob/Emtri/Tenof Alafenbrand: Genvoya | 38 |
| Atorvastatin Calcium | 36 |
| Emtricitab/Rilpiviri/Tenof Alabrand: Odefsey | 31 |
| Gabapentin | 24 |
| Darunavir | 22 |
| Loperamide Hclbrand: Loperamide | 21 |
| Enalapril Maleate | 21 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-06
- Last updated
- 2021-04-28
- Certified
- 2021-04-28
Frequently asked questions
- What is Katayoun Rezai's NPI number?
- Katayoun Rezai's National Provider Identifier (NPI) is 1730111576, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katayoun Rezai's specialty?
- Katayoun Rezai is listed in the NPPES registry with a primary specialty of Infectious Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Katayoun Rezai located?
- Katayoun Rezai's practice location on file with NPPES is 1901 W Harrison St, Chicago, IL 60612-3714.
- What is Katayoun Rezai's phone number?
- The practice phone number listed in the NPPES registry for Katayoun Rezai is (312) 864-6000.
- Does Katayoun Rezai accept Medicare?
- Katayoun Rezai is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katayoun Rezai's NPI active?
- Yes — Katayoun Rezai's NPI (1730111576) is active in the NPPES registry as of the last update on 2021-04-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.