James Leyden, MD
NPI 1124053731 · Dermatology Physician · Philadelphia, PA
James Leyden, MD is a Dermatology Physician provider in Philadelphia, PA (NPI 1124053731).
Provider details
- NPI number
- 1124053731
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD009456E (PA)
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.
$99 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
- 2006-07-11
- Last updated
- 2011-03-09
Frequently asked questions
- What is James Leyden's NPI number?
- James Leyden's National Provider Identifier (NPI) is 1124053731, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Leyden's specialty?
- James Leyden is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is James Leyden located?
- James Leyden's practice location on file with NPPES is 3400 Spruce St, Philadelphia, PA 19104.
- What is James Leyden's phone number?
- The practice phone number listed in the NPPES registry for James Leyden is (215) 662-2737.
- Is James Leyden's NPI active?
- Yes — James Leyden's NPI (1124053731) is active in the NPPES registry as of the last update on 2011-03-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.