Geoffrey Tsaras, MD
NPI 1023278769 · Infectious Disease Physician · Rockford, IL
Enrolled with Medicare as Practitioner - Infectious Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Geoffrey Tsaras, MD is a Infectious Disease Physician provider in Rockford, IL (NPI 1023278769).
Provider details
- NPI number
- 1023278769
- Entity type
- Individual
- Primary specialty
- Infectious Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 103894 (MN)
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
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
593 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 206 | $76 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 132 | $93 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 106 | $126 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 49 | $115 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 33 | $167 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Doxycycline Hyclate | 64 | 24 |
| Bictegrav/Emtricit/Tenofov Alabrand: Biktarvy | 58 | — |
| Vancomycin Hcl | 49 | 20 |
| Methenamine Hippurate | 49 | 15 |
| Cephalexin | 45 | 17 |
| Penicillin V Potassium | 34 | — |
| Ceftriaxone Sodiumbrand: Ceftriaxone | 32 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$27 across 1 record (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)
- 129 Phelps Ave. #508Rockford, IL 61108-2455Phone: (815) 229-2300Fax: (815) 229-3909
Registry dates
- Enumerated
- 2008-06-16
- Last updated
- 2021-03-12
- Certified
- 2021-03-12
Frequently asked questions
- What is Geoffrey Tsaras's NPI number?
- Geoffrey Tsaras's National Provider Identifier (NPI) is 1023278769, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Geoffrey Tsaras's specialty?
- Geoffrey Tsaras is listed in the NPPES registry with a primary specialty of Infectious Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Geoffrey Tsaras located?
- Geoffrey Tsaras's practice location on file with NPPES is 1340 Charles St Ste 404, Rockford, IL 61104-2200.
- What is Geoffrey Tsaras's phone number?
- The practice phone number listed in the NPPES registry for Geoffrey Tsaras is (779) 696-1890.
- Does Geoffrey Tsaras accept Medicare?
- Geoffrey Tsaras is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Geoffrey Tsaras's NPI active?
- Yes — Geoffrey Tsaras's NPI (1023278769) is active in the NPPES registry as of the last update on 2021-03-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.