Timothy O'Leary, MD, PHD
NPI 1003899873 · Anatomic Pathology Physician · Chesapeake Beach, MD
Timothy O'Leary, MD, PHD is a Anatomic Pathology Physician provider in Chesapeake Beach, MD (NPI 1003899873).
Provider details
- NPI number
- 1003899873
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Male
- Sole proprietor
- Yes
- License
- D0025865 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-11-24
- Last updated
- 2019-08-05
Frequently asked questions
- What is Timothy O'Leary's NPI number?
- Timothy O'Leary's National Provider Identifier (NPI) is 1003899873, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Timothy O'Leary's specialty?
- Timothy O'Leary is listed in the NPPES registry with a primary specialty of Anatomic Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Timothy O'Leary located?
- Timothy O'Leary's practice location on file with NPPES is 4755 Camp Roosevelt Drive, Chesapeake Beach, MD 20732.
- What is Timothy O'Leary's phone number?
- The practice phone number listed in the NPPES registry for Timothy O'Leary is (240) 460-0271.
- Is Timothy O'Leary's NPI active?
- Yes — Timothy O'Leary's NPI (1003899873) is active in the NPPES registry as of the last update on 2019-08-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.