Mark Fisher, PH.D.
NPI 1659457950 · Clinical Psychologist · Severna Park, MD
Mark Fisher, PH.D. is a Clinical Psychologist provider in Severna Park, MD (NPI 1659457950).
Provider details
- NPI number
- 1659457950
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 2572 (MD)
Specialties & taxonomies
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
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
Mailing address
Registry dates
- Enumerated
- 2006-10-29
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mark Fisher's NPI number?
- Mark Fisher's National Provider Identifier (NPI) is 1659457950, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Fisher's specialty?
- Mark Fisher is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Mark Fisher located?
- Mark Fisher's practice location on file with NPPES is 537 Ritchie Hwy Ste 1c, Severna Park, MD 21146-2930.
- What is Mark Fisher's phone number?
- The practice phone number listed in the NPPES registry for Mark Fisher is (410) 315-7715.
- Is Mark Fisher's NPI active?
- Yes — Mark Fisher's NPI (1659457950) 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.