Leonard Joseph Leo, D.O.
General Practice Physician · Rockville, MD
Leonard Joseph Leo, D.O. is a general practice physician with a practice address in Rockville, Maryland, and NPI 1285851535, issued on Apr 19, 2007. Check the license (Maryland H0071022, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Leonard Joseph Leo
- Credential
- D.O.
- Primary taxonomy
- General Practice Physician 208D00000X
- License number
- H0071022 MD
Self-reported in NPPES; status is on the state search - Practice location
- 6321 Executive Blvd, Rockville, MD 20852
- Phone
- (301) 770-6650
- Enumerated
- Apr 19, 2007
- Record last updated
- Nov 2, 2016 (not updated in 10 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest general practice physician records → All 385 in Maryland → Look up another NPI →
Also registered at 6321 Executive Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Julie Rosenberg, D. C.Neurology Chiropractor1841417193
Verify Leonard Joseph Leo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license H0071022Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average general practice physician in 2024
73 Medicare Part D claims for 19 beneficiaries, against an average of 3,030 among the 8,395 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $27.93
1 payment: food and beverage; the largest payer was Pfizer Inc. The 4,259 providers of this specialty with any payment received $1,273.40 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Leonard Joseph Leo among 385 general practice physician records in Maryland
Leonard Joseph Leo, D.O. is one of 385 general practice physician records with a practice address in Maryland. 26% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 16% of them.
- NPI issued2007 · 16% of these records are older, 77% newer
- In a Medicare fileYes · 26% of these records are
- In the CMS Doctors and Clinicians fileNo · 14% of these records are
- Record last updated2016 · 35% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208D00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
General Practice Physician providers in Maryland
There are 385 general practice physician records in Maryland.
All 385 in Maryland → Every provider in Rockville → General Practice Physician nationwide →
The 8 general practice physician records with the nearest ZIP codes
- Jennifer Crumling, MDRockville, MD 208521780488999
- Michael Greger, MDRockville, MD 208521669779641
- Douglas Hambright, VMDRockville, MD 208521518720358
- Ashok Batra, MDPotomac, MD 208541700264884
- Rory Byrne, M.D.Rockville, MD 208501356518294
- Ronald Germain, M.D.Potomac, MD 208541780926717
- Evan Hadley, M,D,Potomac, MD 208541952791709
- Haifa Shaban, M.D.Rockville, MD 208501649216623
Common questions
What is Leonard Joseph Leo, D.O.'s NPI number?
Leonard Joseph Leo, D.O.'s National Provider Identifier (NPI) is 1285851535, issued on Apr 19, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Leonard Joseph Leo, D.O. located?
The NPPES record lists a practice address at 6321 Executive Blvd, Rockville, MD, 20852. Phone: (301) 770-6650. Providers update this record themselves, so call before visiting.
How can I verify Leonard Joseph Leo, D.O.'s license?
NPPES lists Maryland license number H0071022, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Leonard Joseph Leo, D.O. prescribe under Medicare Part D?
In 2024, Leonard Joseph Leo, D.O. had 73 Medicare Part D claims for 19 beneficiaries; the average among general practice physician prescribers was 3,030. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.