Mary Alexis Steimer, N.P.
Nurse Practitioner · Fairfax, VA
At a glance
8081 Innovation Park Dr, Fairfax, VA 22031-4867
NPPES record updated May 10, 2022. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
8081 Innovation Park DrFairfax, VA 22031-4867
Additional reported practice locations
8505 Arlington Blvd Ste 140Fairfax, VA 220314636
Phone: 7039706430
Fax: 7039706428 3580 Joseph Siewick Dr Ste 403
Fairfax, VA 220331764
Phone: 7036201144
Fax: 7036203951 3300 Gallows Rd
Falls Church, VA 220423300
Phone: 7037764001
Fax: 7037767113 1800 N Beauregard St Ste 210
Alexandria, VA 223111735
Phone: 7039338125
Fax: 7039338216 1800 N Beauregard St Ste 350
Alexandria, VA 223111725
Phone: 7039338125
Fax: 7039338216 3600 Joseph Siewick Dr
Fairfax, VA 220331709
Phone: 7033913600
Fax: 7033913414 44055 Riverside Pkwy Ste 108
Leesburg, VA 201765179
Phone: 7038588600
Fax: 7038588603 8501 Arlington Blvd Ste 340
Fairfax, VA 220314625
Phone: 7032070733
Fax: 7032070736
Education & affiliations
- Medical / professional school
- Emory University School Of Medicine
- Graduation year
- 2012
- CMS specialties
- Nurse Practitioner
CMS reports telehealth services for this clinician. Confirm current services and availability with the practice.
Practice groups
Reported hospital affiliations
- Inova Fairfax Hospital Falls Church, VA
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
No matching general-payment summary in the imported release. This is not a verified zero and does not rule out other payment types or years.
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Nurse Practitioner
- Taxonomy code
- 363L00000X
- Enumeration date
- Mar 6, 2013
- Record updated
- May 10, 2022
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- N.P.
Reported taxonomies and licenses
363LA2200X
License reported: 0024170715 VA
363L00000X · Primary
License reported: 0024170715 VA
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
8081 Innovation Park DrFairfax, VA 22031-4867
- Phone
- (571) 472-4724
- Fax
- (571) 472-0241
Mailing address
PO BOX 37174BALTIMORE, MD 212973174
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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