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Mary Layden, PHD
NPI 1326119777 · Clinical Psychologist · Philadelphia, PA
Mary Layden, PHD is a Clinical Psychologist provider in Philadelphia, PA (NPI 1326119777).
Provider details
- NPI number
- 1326119777
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Female
- Sole proprietor
- No
- License
- PS005290L (PA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(90/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
3535 Market St
3rd Floor
Philadelphia, PA 19104-3309
Phone: (866) 301-4724
Street-level locationGet directions
Mailing address
3624 Market St
Philadelphia, PA 19104-2614
Registry dates
- Enumerated
- 2006-11-09
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mary Layden's NPI number?
- Mary Layden's National Provider Identifier (NPI) is 1326119777, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Layden's specialty?
- Mary Layden is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Mary Layden located?
- Mary Layden's practice location on file with NPPES is 3535 Market St, Philadelphia, PA 19104-3309.
- What is Mary Layden's phone number?
- The practice phone number listed in the NPPES registry for Mary Layden is (866) 301-4724.
- Is Mary Layden's NPI active?
- Yes — Mary Layden's NPI (1326119777) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.