Patrick Brennan, D.O.
NPI 1770582793 · Family Medicine Physician · South Lyon, MI
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Patrick Brennan, D.O. is a Family Medicine Physician provider in South Lyon, MI (NPI 1770582793).
Provider details
- NPI number
- 1770582793
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- Yes
- License
- PB5101014989 (MI)
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
4,030 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 444 | $8 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 421 | $125 |
| 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 | 414 | $16 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 342 | $10 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 323 | $7 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent Visit |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 131 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 397 | 125 |
| Levothyroxine Sodium | 342 | 112 |
| Lisinopril | 310 | 102 |
| Amlodipine Besylate | 268 | 90 |
| Omeprazole | 204 | 66 |
| Losartan Potassium | 189 | 62 |
| Rosuvastatin Calcium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-07-20
- Last updated
- 2007-07-08
Frequently asked questions
- What is Patrick Brennan's NPI number?
- Patrick Brennan's National Provider Identifier (NPI) is 1770582793, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Patrick Brennan's specialty?
- Patrick Brennan is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Patrick Brennan located?
- Patrick Brennan's practice location on file with NPPES is 22024 Pontiac Trl, South Lyon, MI 48178-9410.
- What is Patrick Brennan's phone number?
- The practice phone number listed in the NPPES registry for Patrick Brennan is (248) 437-2525.
- Does Patrick Brennan accept Medicare?
- Patrick Brennan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Patrick Brennan's NPI active?
- Yes — Patrick Brennan's NPI (1770582793) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.