Ryan O'Leary, MD
NPI 1639809833 · Internal Medicine Physician · Charleston, SC
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ryan O'Leary, MD is a Internal Medicine Physician provider in Charleston, SC (NPI 1639809833).
Provider details
- NPI number
- 1639809833
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- LL88138 (SC)
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
4 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 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 40 | 20 |
| Amlodipine Besylate | 20 | 11 |
| Amitriptyline Hcl | 19 | — |
| Omeprazole | 17 | — |
| Gabapentin | 15 | — |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 14 | — |
| Apixabanbrand: Eliquis |
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-06-13
- Last updated
- 2022-06-13
- Certified
- 2022-04-19
Frequently asked questions
- What is Ryan O'Leary's NPI number?
- Ryan O'Leary's National Provider Identifier (NPI) is 1639809833, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ryan O'Leary's specialty?
- Ryan O'Leary is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ryan O'Leary located?
- Ryan O'Leary's practice location on file with NPPES is 169 Ashley Ave, Charleston, SC 29425-8905.
- What is Ryan O'Leary's phone number?
- The practice phone number listed in the NPPES registry for Ryan O'Leary is (843) 792-2731.
- Does Ryan O'Leary accept Medicare?
- Ryan O'Leary is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ryan O'Leary's NPI active?
- Yes — Ryan O'Leary's NPI (1639809833) is active in the NPPES registry as of the last update on 2022-06-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.