Mary Steimer, N.P.
NPI 1669713368 · Nurse Practitioner · Fairfax, VA
Provider details
- NPI number
- 1669713368
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- N.P.
- Sex
- Female
- Sole proprietor
- No
- License
- 0024170715 (VA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
13 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
9 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
56 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 33 | $132 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 23 | $89 |
Typical Medicare-allowed amounts for these services range $89–$132 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$159 across 2 records (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 (8)
- 1800 N Beauregard St Ste 350Alexandria, VA 22311-1725Phone: (703) 933-8125Fax: (703) 933-8216
- 1800 N Beauregard St Ste 210Alexandria, VA 22311-1735Phone: (703) 933-8125Fax: (703) 933-8216
- 8501 Arlington Blvd Ste 340Fairfax, VA 22031-4625Phone: (703) 207-0733Fax: (703) 207-0736
- 3600 Joseph Siewick DrFairfax, VA 22033-1709Phone: (703) 391-3600Fax: (703) 391-3414
- 8505 Arlington Blvd Ste 140Fairfax, VA 22031-4636Phone: (703) 970-6430Fax: (703) 970-6428
- 3580 Joseph Siewick Dr Ste 403Fairfax, VA 22033-1764Phone: (703) 620-1144Fax: (703) 620-3951
- 3300 Gallows RdFalls Church, VA 22042-3300Phone: (703) 776-4001Fax: (703) 776-7113
- 44055 Riverside Pkwy Ste 108
Registry dates
- Enumerated
- 2013-03-06
- Last updated
- 2022-05-10
- Certified
- 2022-05-10
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.