MS. MARY ALEXIS STEIMER N.P.
NPI 1669713368
Nurse Practitioner in Fairfax, VA

Active since March 06, 2013PECOS EnrolledAccepts Medicare Assignment
81.28/100
CMS Quality Rating
8081 INNOVATION PARK DR, FAIRFAX, VA 22031(571) 472-4724(571) 472-0241 Get Directions Write a Review

NPPES record last updated: May 10, 2022. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: May 10, 2022, Oct 16, 2020, Sep 14, 2020 (3 updates tracked since 2020).

About Ms. Mary Alexis Steimer N.p. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MS. MARY ALEXIS STEIMER N.P. (NPI 1669713368) is an individual nurse practitioner in Fairfax, Virginia, licensed in Virginia (0024170715) and active in the NPI registry since March 2013. She is enrolled in Medicare PECOS, is affiliated with Inova Fairfax Hospital, and is a graduate of Emory University School Of Medicine (2012).

NPPES Registry Identity

NPI1669713368
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameMS. MARY ALEXIS STEIMERCredential: N.P.
Location Address8081 INNOVATION PARK DRFairfax, VA 22031-4867
Mailing AddressPo Box 37174Baltimore, MD 21297-3174 · (571) 423-5699 · Fax (571) 423-5698
Fax(571) 472-0241
Sole ProprietorNo
Medical School CMSEmory University School Of MedicineGraduated 2012
Enumeration DateMarch 6, 2013
Last NPPES UpdateMay 10, 20223 updates tracked since enumeration
NPPES CertifiedMay 10, 2022
NPI 1669713368 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License Licensed in VA · 0024170715
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
Also ListedNurse Practitioner · Adult HealthTaxonomy 363LA2200X · License 0024170715 (VA)
8081 INNOVATION PARK DR, Fairfax, VA 22031

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Ms. Mary Alexis Steimer N.p. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4587880885
PECOS Enrollment IDI20160127002331, I20160310002361
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
33 services32 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
23 services23 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Inova Fairfax Hospital

Acute Care Hospitals · Falls Church, VA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number490063
Location3300 Gallows RoadFalls Church, VA 22042 · Fairfax County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 22031 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$100.31 typical visit price
range $65.18 – $194.86
Typical copayment $25.07 (range $16.29 – $48.71)
Most-billed visit code 99203
Established Patient
$113.72 typical visit price
range $21.40 – $158.88
Typical copayment $28.43 (range $5.35 – $39.72)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

81.28/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality70.77
Promoting Interoperability100
Improvement Activities40
Cost66.84

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Internal Medicine (Medical Oncology)
8081 INNOVATION PARK DR
FAIRFAX, VA 22031
Internal Medicine (Medical Oncology)
8081 INNOVATION PARK DR
FAIRFAX, VA 22031
Radiology (Radiation Oncology)
8081 INNOVATION PARK DR
FAIRFAX, VA 22031
Internal Medicine (Medical Oncology)
8081 INNOVATION PARK DR
FAIRFAX, VA 22031
Physician Assistant
8081 INNOVATION PARK DR
FAIRFAX, VA 22031
Internal Medicine
8081 INNOVATION PARK DR
FAIRFAX, VA 22031
Dietitian, Registered
8081 INNOVATION PARK DR
FAIRFAX, VA 22031
Internal Medicine (Medical Oncology)
8081 INNOVATION PARK DR
FAIRFAX, VA 22031

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mary Steimer's NPI number?

The NPI number for Mary Steimer is 1669713368. It was assigned to this individual provider in the NPPES registry on March 6, 2013.

Where is Mary Steimer located?

Mary Steimer practices at 8081 Innovation Park Dr, Fairfax, VA 22031. The listed phone number is (571) 472-4724.

What is Mary Steimer's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Mary Steimer enrolled in Medicare?

Yes. Mary Steimer is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Mary Steimer affiliated with any hospitals?

According to CMS data, Mary Steimer is affiliated with Inova Fairfax Hospital.

When was this NPI record last updated?

The NPPES record for Mary Steimer was last updated on May 10, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.