Mary Ellen Zator Estes, NP
Nurse Practitioner · Fairfax, VA
Mary Ellen Zator Estes, NP is a nurse practitioner with a practice address in Fairfax, Virginia, and NPI 1447427000, issued on May 13, 2008. Check the license (Virginia 0024164568, as entered in NPPES) with the Virginia board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary Ellen Zator Estes
- Credential
- NP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 0024164568 VA
Self-reported in NPPES; status is on the state search - Practice location
- 3620 Joseph Siewick Dr, Fairfax, VA 22033
- Phone
- (703) 264-0521
- Enumerated
- May 13, 2008
- Record last updated
- Aug 27, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (703) 860-0229
- Medicare enrollment
- Enrolled (PECOS I20131024001489); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 1,721 in Virginia → Look up another NPI →
Also registered at 3620 Joseph Siewick Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mary Ellen Zator Estes in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Virginia board licenses this profession
Search for license 0024164568Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average nurse practitioner in 2024
151 Medicare Part D claims for 51 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Atorvastatin Calcium16 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $482.71
12 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 38,884 providers of this specialty with any payment received $791.64 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Privia Medical Group, LLCFairfax, VA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Ellen Zator Estes among 1,721 nurse practitioner records in Virginia
Mary Ellen Zator Estes, NP is one of 1,721 nurse practitioner records with a practice address in Virginia. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 29% of them.
- NPI issued2008 · 29% of these records are older, 67% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 54% of these records are
- Graduated2000 · median 2018 among the 921 with a school on file
- Record last updated2013 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
83 nurse practitioner records list a practice address in Fairfax
They are 83 of the 6,584 NPPES records with a practice address in Fairfax, and 1,721 nurse practitioner records in Virginia.
All 1,721 in Virginia → Every provider in Fairfax → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Courtney Alesandro, NPFairfax, VA 220331265619605
- Nana Esi Apedoe, DNP, AGPCNP-BCFairfax, VA 220331952785313
- Beverly Bayer, NPFairfax, VA 220331255508818
- Amanda Brooks, CRNPFairfax, VA 220331407906258
- Marie Fugitt, CFNPFairfax, VA 220331073891529
- Elizabeth Gibbemeyer, NPFairfax, VA 220331356968820
- Elizabeth Healy, CRNPFairfax, VA 220331437225778
- Rebecca Huffstutler, CRNPFairfax, VA 220331376605972
Common questions
What is Mary Ellen Zator Estes, NP's NPI number?
Mary Ellen Zator Estes, NP's National Provider Identifier (NPI) is 1447427000, issued on May 13, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Mary Ellen Zator Estes, NP located?
The NPPES record lists a practice address at 3620 Joseph Siewick Dr, Fairfax, VA, 22033. Phone: (703) 264-0521. Providers update this record themselves, so call before visiting.
How can I verify Mary Ellen Zator Estes, NP's license?
NPPES lists Virginia license number 0024164568, as entered by the provider. Search the Virginia board that licenses this profession; the NPPES record confirms identity only.
How much does Mary Ellen Zator Estes, NP prescribe under Medicare Part D?
In 2024, Mary Ellen Zator Estes, NP had 151 Medicare Part D claims for 51 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.