George Nissan, DO
NPI 1245222033 · Internal Medicine Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
George Nissan, DO is a Internal Medicine Physician provider in Chicago, IL (NPI 1245222033).
Provider details
- NPI number
- 1245222033
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- L0459 (TX)
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 tenure25% of score
20 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
309 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 | 101 | $128 |
| 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 | 88 | $16 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 78 | $108 |
| Injection of Chemical for Paralysis of Facial and Neck Nerve Muscles on Both Sides of Face64615 | 15 | $175 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 14 | $111 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tizanidine Hcl | 57 | 14 |
| Erenumab-Aooebrand: Aimovig Autoinjector | 35 | — |
| Galcanezumab-Gnlmbrand: Emgality Pen | 34 | — |
| Diphenhydramine Hcl | 32 | — |
| Baclofen | 28 | 14 |
| Gabapentin | 26 | — |
| Ubrogepantbrand: Ubrelvy | 26 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$5,333 across 135 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)
- 2150 Pfingsten Rd.Suite 2260Glenview, IL 60026-1326Phone: (773) 388-6390Fax: (312) 867-7101
Registry dates
- Enumerated
- 2005-08-17
- Last updated
- 2025-08-08
- Certified
- 2025-08-08
Frequently asked questions
- What is George Nissan's NPI number?
- George Nissan's National Provider Identifier (NPI) is 1245222033, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is George Nissan's specialty?
- George Nissan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is George Nissan located?
- George Nissan's practice location on file with NPPES is 1460 N Halsted St Ste 501, Chicago, IL 60642-2615.
- What is George Nissan's phone number?
- The practice phone number listed in the NPPES registry for George Nissan is (773) 388-6390.
- Does George Nissan accept Medicare?
- George Nissan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is George Nissan's NPI active?
- Yes — George Nissan's NPI (1245222033) is active in the NPPES registry as of the last update on 2025-08-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.