Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. John Danna, PHD

Individual provider Psychologist · NPI 1699102053

Dr. John Danna, PHD is a Clinical Psychologist in North Potomac, Maryland. Qualified in 2011, 15 years ago. Practices with Cornerstone Montgomery Inc, a 22-clinician group, accepts Medicare assignment and offers telehealth.

Years since qualifying
15
In the registry since
2013
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

14405 Kings Grant St
North Potomac, MD 20878-2572
Phone: (240) 388-5720
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X

Record details

NPI number1699102053
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedOctober 1, 2013
Last updated in NPPESSeptember 3, 2021
Certification dateSeptember 3, 2021
Mailing address14405 Kings Grant St, North Potomac, MD 20878-2572

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 2011 (15 years in practice)
Group practice Cornerstone Montgomery Inc — 22 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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