IndividualActive
John Mallory
NPI 1891126678 · Clinical Psychologist · Bethesda, MD
John Mallory is a Clinical Psychologist provider in Bethesda, MD (NPI 1891126678).
Provider details
- NPI number
- 1891126678
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- Yes
- License
- 0810006431 (VA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(86/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
12 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
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
8901 Rockville Pike
Bethesda, MD 20889-0001
Phone: (301) 295-0500
Approximate (ZIP-level) locationGet directions
Mailing address
8901 Rockville Pike
Bethesda, MD 20889-0001
Additional practice locations (2)
- 2460 S Vine StDenver, CO 80208-0001Phone: (303) 871-3626
- Naval Medical Center Portsmouth620 John Paul Jones CirclePortsmouth, VA 23708-2111Phone: (757) 953-5259
Registry dates
- Enumerated
- 2013-12-04
- Last updated
- 2026-06-01
- Certified
- 2026-06-01
Frequently asked questions
- What is John Mallory's NPI number?
- John Mallory's National Provider Identifier (NPI) is 1891126678, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Mallory's specialty?
- John Mallory is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is John Mallory located?
- John Mallory's practice location on file with NPPES is 8901 Rockville Pike, Bethesda, MD 20889-0001.
- What is John Mallory's phone number?
- The practice phone number listed in the NPPES registry for John Mallory is (301) 295-0500.
- Is John Mallory's NPI active?
- Yes — John Mallory's NPI (1891126678) is active in the NPPES registry as of the last update on 2026-06-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.