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Edit this profileWhere to find Mary K. Hill, PhD
- Fairfax location main office
8081 Innovation Park Dr Ste 604, Fairfax, VA 22031 - Fairfax location
8221 Willow Oaks Corporate Dr Ste 4-420, Fairfax, VA 22031 - Alexandria location
4320 Seminary Rd, Alexandria, VA 22304 - Fairfax location
3600 Joseph Siewick Dr, Fairfax, VA 22033 - Falls Church location
3300 Gallows Rd, Falls Church, VA 22042
About Dr. Hill
Listed in the NPI registry as a psychologist, Mary K. Hill, PhD practices in Fairfax, VA. Mary is also listed as specializing in psychologist — clinical. According to Medicare claims data, the services billed most often include psychotherapy, 45 minutes. NPI 1285948042 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (571) 472-6880
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
8081 INNOVATION PARK DR STE 604
Fairfax, VA 22031
8221 Willow Oaks Corporate Dr Ste 4-420
Fairfax, VA 22031
4320 Seminary Rd
Alexandria, VA 22304
3600 Joseph Siewick Dr
Fairfax, VA 22033
3300 Gallows Rd
Falls Church, VA 22042
44045 Riverside Pkwy
Leesburg, VA 20176
8221 Willow Oaks Corporate Dr Ste 4-435
Fairfax, VA 22031
2501 Parkers Ln
Alexandria, VA 22306
8221 Willow Oaks Corporate Dr Ste 4-430
Fairfax, VA 22031
224 Cornwall St NW
Leesburg, VA 20176
8221 Willow Oaks Corporate Dr Ste 4-425
Fairfax, VA 22031
Concerns and Conditions Addressed
Within Psychology (Unspecified) generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Abuse and relationships
Addiction
Anxiety & Phobias
Anxiety and phobias
Behavioral & Emotional
Child & Adolescent
Child and teen issues
Eating & Body Image
Health Psychology
Identity and life stages
Interpersonal & Abuse
Life and social issues
Mindset and personality
Mood and emotions
Mood Disorders
Neurodevelopmental
Personality Disorders
Relationships
Self-Esteem & Identity
Sleep
Sleep issues
Stress & Lifestyle
Thought disorders
Trauma and abuse
Work and career
Procedures & services
Most searched procedures
Addiction support
Alternative formats
Behavioral Programs
Behavioral therapies
Brain-based therapies
Care delivery
Child & Adolescent
Evaluations & Assessments
- Autism Assessment
- Bariatric Surgery Evaluation
- Cognitive and memory testing
- Emotional Support Animal Evaluation
- Spinal Cord Stimulator Psychological Clearance
Evaluations and testing
- Adoption Psychological Evaluation
- Gender-affirming surgery evaluation
- Immigration Psychological Evaluation
- Neuropsychological Testing
Expressive therapies
Family and parenting
Mind-body therapies
Relationship Counseling
Skills training
Specialized therapy
Specialized Treatments
- Biofeedback
- Crisis intervention
- Hypnotherapy
- Ketamine-assisted counseling
- Mindfulness-based stress reduction
- Sleep counseling
Talk therapies
Therapy Modalities
Procedures Most Often Billed to Medicare
215 services · 19 patients · 1 distinct code
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Psychotherapy, 45 minutes | Treatment | 90834 |
215 | More often than most peers in Psychologist |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other psychologists in Fairfax 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 15 related providers in 2 groups
Class of 2008 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Psychotherapy, 45 minutes 7
Providers in VA who bill this service to Medicare most often.
Common questions
What does Mary K. Hill specialize in?
Mary K. Hill is a psychologist in Fairfax, VA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Mary K. Hill located?
Mary K. Hill is listed at 8081 Innovation Park Dr Ste 604, Fairfax, VA 22031. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Mary K. Hill's phone number?
The number on file is (571) 472-6880. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Mary K. Hill's NPI number?
Mary K. Hill's National Provider Identifier is 1285948042. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Mary K. Hill train?
Mary K. Hill attended Other, graduating in 2008. This comes from the CMS National Downloadable File.
CMS public data
How long has Mary K. Hill been practicing?
Mary K. Hill has 18 years experience. Calculated from a graduation year of 2008, reported in the CMS National Downloadable File.
CMS public data
What does Mary K. Hill do most often?
According to Medicare billing data, Mary K. Hill provides treatments such as psychotherapy, 45 minutes. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Mary K. Hill confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Mary K. Hill. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.