Mark Richardson, PSY.D
NPI 1538529821 · Clinical Psychologist · Wilmington, DE
Mark Richardson, PSY.D is a Clinical Psychologist provider in Wilmington, DE (NPI 1538529821).
Provider details
- NPI number
- 1538529821
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PSY.D
- Sex
- Male
- Sole proprietor
- No
- License
- B1-0000989 (DE)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 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
Mailing address
Registry dates
- Enumerated
- 2016-02-29
- Last updated
- 2016-02-29
Frequently asked questions
- What is Mark Richardson's NPI number?
- Mark Richardson's National Provider Identifier (NPI) is 1538529821, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Richardson's specialty?
- Mark Richardson is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Mark Richardson located?
- Mark Richardson's practice location on file with NPPES is 1301 E 12th St, Wilmington, DE 19802-5315.
- What is Mark Richardson's phone number?
- The practice phone number listed in the NPPES registry for Mark Richardson is (302) 429-7780.
- Is Mark Richardson's NPI active?
- Yes — Mark Richardson's NPI (1538529821) is active in the NPPES registry as of the last update on 2016-02-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.