Timothy Bresnahan, MD
NPI 1265538433 · Internal Medicine Physician · Elmhurst, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Timothy Bresnahan, MD is a Internal Medicine Physician provider in Elmhurst, IL (NPI 1265538433).
Provider details
- NPI number
- 1265538433
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 36-053548 (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
546 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 | 333 | $135 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 84 | $139 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 75 | $15 |
| Stool Analysis for Blood to Screen for Colon Tumors82270 | 23 | $4 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 16 | $182 |
| Administration of Pneumococcal VaccineG0009 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 56 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 457 | 143 |
| Amlodipine Besylate | 200 | 67 |
| Lisinopril | 190 | 63 |
| Metoprolol Succinate | 189 | 64 |
| Levothyroxine Sodium | 185 | 51 |
| Metformin Hcl | 100 | 35 |
| Triamterene/Hydrochlorothiazid |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-15
- Last updated
- 2019-03-06
Frequently asked questions
- What is Timothy Bresnahan's NPI number?
- Timothy Bresnahan's National Provider Identifier (NPI) is 1265538433, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Timothy Bresnahan's specialty?
- Timothy Bresnahan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Timothy Bresnahan located?
- Timothy Bresnahan's practice location on file with NPPES is 172 E Schiller St, Elmhurst, IL 60126.
- What is Timothy Bresnahan's phone number?
- The practice phone number listed in the NPPES registry for Timothy Bresnahan is (331) 221-0000.
- Does Timothy Bresnahan accept Medicare?
- Timothy Bresnahan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Timothy Bresnahan's NPI active?
- Yes — Timothy Bresnahan's NPI (1265538433) is active in the NPPES registry as of the last update on 2019-03-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.