Irene Katzan, MD
NPI 1891738803 · Neurological Surgery Physician · Cleveland, OH
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Irene Katzan, MD is a Neurological Surgery Physician provider in Cleveland, OH (NPI 1891738803).
Provider details
- NPI number
- 1891738803
- Entity type
- Individual
- Primary specialty
- Neurological Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 35074604 (OH)
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
20 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
91 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) |
|---|---|---|
| Ultrasound of Both Sides of Head and Neck Blood Flow93880 | 36 | $36 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 31 | $113 |
| Telephone Or Internet Assessment With Verbal and Written Report By Consulting Physician, 11-20 Minutes99447 | 12 | $34 |
| Telephone Or Internet Assessment With Verbal and Written Report By Consulting Physician, 21-30 Minutes99448 | 12 | $51 |
Typical Medicare-allowed amounts for these services range $34–$113 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-14
- Last updated
- 2008-02-11
Frequently asked questions
- What is Irene Katzan's NPI number?
- Irene Katzan's National Provider Identifier (NPI) is 1891738803, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Irene Katzan's specialty?
- Irene Katzan is listed in the NPPES registry with a primary specialty of Neurological Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Irene Katzan located?
- Irene Katzan's practice location on file with NPPES is 9500 Euclid Ave, Cleveland, OH 44195-0001.
- What is Irene Katzan's phone number?
- The practice phone number listed in the NPPES registry for Irene Katzan is (800) 223-2273.
- Does Irene Katzan accept Medicare?
- Irene Katzan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Irene Katzan's NPI active?
- Yes — Irene Katzan's NPI (1891738803) is active in the NPPES registry as of the last update on 2008-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.