John Edward Longley, D.D.S.
General Practice Dentistry · Timonium, MD
John Edward Longley, D.D.S. is a general practice dentistry with a practice address in Timonium, Maryland, and NPI 1053315317, issued on Jun 1, 2005. Check the license (Maryland 13371, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John Edward Longley
- Credential
- D.D.S.
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 13371 MD
Self-reported in NPPES; status is on the state search - Practice location
- 20 E Timonium RD, Timonium, MD 21093
- Phone
- (410) 308-4880
- Enumerated
- Jun 1, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (410) 308-4883
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 2,408 in Maryland → Look up another NPI →
Also registered at 20 E Timonium RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mark Ballinger, D.D.S.General Practice Dentistry1770605388
- Joseph Fisher, DDSGeneral Practice Dentistry1508116211
- David Knopf, D.M.D.General Practice Dentistry1255453874
Verify John Edward Longley in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license 13371Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
27% more Medicare Part D claims than the average general practice dentistry in 2024
105 Medicare Part D claims for 63 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D. 21 claims were for opioids.
Most prescribed
- Amoxicillin-Clavulanate Potass26 claims
- Amoxicillin18 claims
- Hydrocodone-Acetaminophen18 claims
- Azithromycin15 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.
John Edward Longley among 2,408 general practice dentistry records in Maryland
John Edward Longley, D.D.S. is one of 2,408 general practice dentistry records with a practice address in Maryland. 62% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 96% newer
- In a Medicare fileYes · 62% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2026 · 72% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
27 general practice dentistry records list a practice address in Timonium
They are 27 of the 612 NPPES records with a practice address in Timonium, and 2,408 general practice dentistry records in Maryland.
All 2,408 in Maryland → Every provider in Timonium → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Mary Bean, D.D.S.Lutherville, MD 210931104826437
- Melanie Burke, DMDLutherville Timonium, MD 210931790856623
- Edwin Crooks, DDSLutherville, MD 210931639224512
- Bonnie Culbertson, DDSLutherville, MD 210931942380555
- Charles Devries, DDSTimonium, MD 210931386798791
- Kelly Foster, DDSTimonium, MD 210931902979016
- Emma Galvan, D.D.S.Timonium, MD 210931881795672
- Dennis Lambrow, D.D.S.Timonium, MD 210931720140882
Common questions
What is John Edward Longley, D.D.S.'s NPI number?
John Edward Longley, D.D.S.'s National Provider Identifier (NPI) is 1053315317, issued on Jun 1, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John Edward Longley, D.D.S. located?
The NPPES record lists a practice address at 20 E Timonium RD, Timonium, MD, 21093. Phone: (410) 308-4880. Providers update this record themselves, so call before visiting.
How can I verify John Edward Longley, D.D.S.'s license?
NPPES lists Maryland license number 13371, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.
How much does John Edward Longley, D.D.S. prescribe under Medicare Part D?
In 2024, John Edward Longley, D.D.S. had 105 Medicare Part D claims for 63 beneficiaries; the average among general practice dentistry prescribers was 83. 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.