Sean O'Keefe, M.D.
NPI 1811526759 · Internal Medicine Physician · Ann Arbor, MI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sean O'Keefe, M.D. is a Internal Medicine Physician provider in Ann Arbor, MI (NPI 1811526759).
Provider details
- NPI number
- 1811526759
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
6 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
12 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) |
|---|---|---|
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 12 | $132 |
Typical Medicare-allowed amounts for these services range $132–$132 (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
Additional practice locations (1)
- 19 Prospect Rdg Apt 49Ridgefield, CT 06877-5131Phone: (203) 731-1873
Registry dates
- Enumerated
- 2020-04-03
- Last updated
- 2024-08-07
- Certified
- 2024-08-07
Frequently asked questions
- What is Sean O'Keefe's NPI number?
- Sean O'Keefe's National Provider Identifier (NPI) is 1811526759, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sean O'Keefe's specialty?
- Sean O'Keefe is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Sean O'Keefe located?
- Sean O'Keefe's practice location on file with NPPES is 1500 E Medical Center Dr, Ann Arbor, MI 48109-5000.
- What is Sean O'Keefe's phone number?
- The practice phone number listed in the NPPES registry for Sean O'Keefe is (734) 936-4000.
- Does Sean O'Keefe accept Medicare?
- Sean O'Keefe is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sean O'Keefe's NPI active?
- Yes — Sean O'Keefe's NPI (1811526759) is active in the NPPES registry as of the last update on 2024-08-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.