Mary June So
NPI 1609258946 · Psychiatric/Mental Health Nurse Practitioner · Falls Church, VA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary June So is a Psychiatric/Mental Health Nurse Practitioner provider in Falls Church, VA (NPI 1609258946).
Provider details
- NPI number
- 1609258946
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 0001220246 (VA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
Nursing Service Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
10 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
3 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$101 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 9707 Key West Ave Ste 100Rockville, MD 20850-3992Phone: (240) 750-6467
- 1307 Vincent PlMc Lean, VA 22101-3680Phone: (703) 821-1073
Registry dates
- Enumerated
- 2015-06-23
- Last updated
- 2023-08-31
- Certified
- 2023-08-31
Frequently asked questions
- What is Mary June So's NPI number?
- Mary June So's National Provider Identifier (NPI) is 1609258946, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary June So's specialty?
- Mary June So is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary June So located?
- Mary June So's practice location on file with NPPES is 3300 Gallows Rd, Falls Church, VA 22042-3307.
- What is Mary June So's phone number?
- The practice phone number listed in the NPPES registry for Mary June So is (703) 776-3650.
- Does Mary June So accept Medicare?
- Mary June So is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary June So's NPI active?
- Yes — Mary June So's NPI (1609258946) is active in the NPPES registry as of the last update on 2023-08-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.