Leonard Leo, D.O.
NPI 1285851535 · General Practice Physician · Rockville, MD
Leonard Leo, D.O. is a General Practice Physician provider in Rockville, MD (NPI 1285851535).
Provider details
- NPI number
- 1285851535
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- Yes
- License
- H0071022 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$28 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-04-19
- Last updated
- 2016-11-02
Frequently asked questions
- What is Leonard Leo's NPI number?
- Leonard Leo's National Provider Identifier (NPI) is 1285851535, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leonard Leo's specialty?
- Leonard Leo is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Leonard Leo located?
- Leonard Leo's practice location on file with NPPES is 6321 Executive Blvd, Rockville, MD 20852-3905.
- What is Leonard Leo's phone number?
- The practice phone number listed in the NPPES registry for Leonard Leo is (301) 770-6650.
- Is Leonard Leo's NPI active?
- Yes — Leonard Leo's NPI (1285851535) is active in the NPPES registry as of the last update on 2016-11-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.