Michael O'Sullivan, MD
NPI 1811518848 · Family Medicine Physician · Mobile, AL
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael O'Sullivan, MD is a Family Medicine Physician provider in Mobile, AL (NPI 1811518848).
Provider details
- NPI number
- 1811518848
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 52746 (AL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
6 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 33 | — |
| Amlodipine Besylate | 33 | 12 |
| Lisinopril | 30 | 13 |
| Carvedilol | 16 | — |
| Hydrochlorothiazide | 14 | — |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 13 | — |
| Losartan Potassium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-04-30
- Last updated
- 2026-01-21
- Certified
- 2026-01-21
Frequently asked questions
- What is Michael O'Sullivan's NPI number?
- Michael O'Sullivan's National Provider Identifier (NPI) is 1811518848, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael O'Sullivan's specialty?
- Michael O'Sullivan is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael O'Sullivan located?
- Michael O'Sullivan's practice location on file with NPPES is 1700 Spring Hill Ave, Mobile, AL 36604-1407.
- What is Michael O'Sullivan's phone number?
- The practice phone number listed in the NPPES registry for Michael O'Sullivan is (251) 435-1200.
- Does Michael O'Sullivan accept Medicare?
- Michael O'Sullivan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael O'Sullivan's NPI active?
- Yes — Michael O'Sullivan's NPI (1811518848) is active in the NPPES registry as of the last update on 2026-01-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.