Leonard Chornock
Medical Physician Assistant · Rockville, MD
Leonard Chornock is a medical physician assistant with a practice address in Rockville, Maryland, and NPI 1811912942, issued on Jul 12, 2006. Check the license (Maryland C000854, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Leonard Chornock
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- C000854 MD
Self-reported in NPPES; status is on the state search - Practice location
- 9901 Medical Center Dr, Rockville, MD 20850
- Phone
- (301) 279-6550
- Enumerated
- Jul 12, 2006
- Record last updated
- Aug 28, 2024
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 871 in Maryland → Look up another NPI →
Also registered at 9901 Medical Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Crystal Addison, P.T.Physical Therapist1407079577
- Olatejumade AdegbenroPharmacist1366889768
- Aaron Adler, PA-CPhysician Assistant1346571767
- Mehrdad Akhlaghi, MDInternal Medicine Physician1124019062
- Nelson Akwo, PHARM.D.Pharmacist1902054273
- Jude Alexander, MDPsychiatry Physician1093706939
Verify Leonard Chornock in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license C000854Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average medical physician assistant in 2024
85 Medicare Part D claims for 66 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 13 claims were for opioids.
Most prescribed
- Cephalexin15 claims
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.
Leonard Chornock among 871 medical physician assistant records in Maryland
Leonard Chornock is one of 871 medical physician assistant records with a practice address in Maryland. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 78% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 54% of these records are
- Record last updated2024 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Physician Assistant providers in Maryland
There are 871 medical physician assistant records in Maryland.
All 871 in Maryland → Every provider in Rockville → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Adrienne Duncan, PA-CRockville, MD 208501902086572
- Debra Folden, PARockville, MD 208501760422950
- Lindsay Gonzalez, PA-CRockville, MD 208501538481601
- Amarjot Kaur, PA-CRockville, MD 208501831380849
- Richard Martin, PA-CRockville, MD 208501356651426
- Natalee PalacioRockville, MD 208501336327899
- Kristi RoodRockville, MD 208501144253634
- Claire Rosche Matzzie, PA-CRockville, MD 208501225199631
Common questions
What is Leonard Chornock's NPI number?
Leonard Chornock's National Provider Identifier (NPI) is 1811912942, issued on Jul 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Leonard Chornock located?
The NPPES record lists a practice address at 9901 Medical Center Dr, Rockville, MD, 20850. Phone: (301) 279-6550. Providers update this record themselves, so call before visiting.
How can I verify Leonard Chornock's license?
NPPES lists Maryland license number C000854, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.
How much does Leonard Chornock prescribe under Medicare Part D?
In 2024, Leonard Chornock had 85 Medicare Part D claims for 66 beneficiaries; the average among medical physician assistant prescribers was 1,148. 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.