James J. Leyden, MD
Dermatology Physician · Philadelphia, PA
James J. Leyden, MD is a dermatology physician with a practice address in Philadelphia, Pennsylvania, and NPI 1124053731, issued on Jul 11, 2006. Check the license (Pennsylvania MD009456E, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- James J. Leyden
- Credential
- MD
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- MD009456E PA
Self-reported in NPPES; status is on the state search - Practice location
- 3400 Spruce St, Philadelphia, PA 19104
- Phone
- (215) 662-2737
- Enumerated
- Jul 11, 2006
- Record last updated
- Mar 9, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (215) 349-8339
- Medicaid ID
- 0016582780001 PA
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 681 in Pennsylvania → Look up another NPI →
Also registered at 3400 Spruce St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Megan Abbott, CRNPNurse Practitioner1396771689
- Michael Abboud, MDEmergency Medicine Physician1962820852
- Emily AbdelmessihPediatric Pharmacist1891612560
- Mohammed AbdullahStudent in an Organized Health Care Education/Training Program1013595495
- Amin Abedini, MDStudent in an Organized Health Care Education/Training Program1912609017
- Farid Aboharb, MD, PHDStudent in an Organized Health Care Education/Training Program1295595973
Verify James J. Leyden in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD009456ECheck 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 dermatology physician in 2024
14 Medicare Part D claims, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Industry payments in 2024: $99.34
1 payment: food and beverage; the largest payer was Incyte Corporation. The 10,250 providers of this specialty with any payment received $8,544.61 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.
James J. Leyden among 681 dermatology physician records in Pennsylvania
James J. Leyden, MD is one of 681 dermatology physician records with a practice address in Pennsylvania. 87% 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 14% of them.
- NPI issued2006 · 14% of these records are older, 57% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileNo · 71% of these records are
- Record last updated2011 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Dermatology Physician providers in Pennsylvania
There are 681 dermatology physician records in Pennsylvania.
All 681 in Pennsylvania → Every provider in Philadelphia → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- George Cotsarelis, MDPhiladelphia, PA 191041871540831
- Rosalie Elenitsas, MDPhiladelphia, PA 191041932134533
- Steven Fakharzadeh, MDPhiladelphia, PA 191041073538641
- Joel Gelfand, MDPhiladelphia, PA 191041710902382
- Jonathan Kantor, MDPhiladelphia, PA 191041326038886
- David Margolis, MDPhiladelphia, PA 191041740205327
- Alain Rook, MDPhiladelphia, PA 191041760417372
- John Stanley, MDPhiladelphia, PA 191041982629556
Common questions
What is James J. Leyden, MD's NPI number?
James J. Leyden, MD's National Provider Identifier (NPI) is 1124053731, issued on Jul 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James J. Leyden, MD located?
The NPPES record lists a practice address at 3400 Spruce St, Philadelphia, PA, 19104. Phone: (215) 662-2737. Providers update this record themselves, so call before visiting.
How can I verify James J. Leyden, MD's license?
NPPES lists Pennsylvania license number MD009456E, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does James J. Leyden, MD prescribe under Medicare Part D?
In 2024, James J. Leyden, MD had 14 Medicare Part D claims; the average among dermatology physician prescribers was 797. 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.