Mary Ellen Schaefer, ANP-C
Adult Health Nurse Practitioner · Southampton, NY
Mary Ellen Schaefer, ANP-C is an adult health nurse practitioner with a practice address in Southampton, New York, and NPI 1558649244, issued on Jul 28, 2011. Check the license (New York 305771, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary Ellen Schaefer
- Credential
- ANP-C
- Primary taxonomy
- Adult Health Nurse Practitioner 363LA2200X
- License number
- 305771 NY
Self-reported in NPPES; status is on the state search - Practice location
- 4 Millstone Dr, Southampton, NY 11968
- Phone
- (631) 374-0534
- Enumerated
- Jul 28, 2011
- Record last updated
- Jul 28, 2011 (not updated in 15 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest adult health nurse practitioner records → All 6,028 in New York → Look up another NPI →
Verify Mary Ellen Schaefer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this profession
Search for license 305771Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.3 times the Medicare Part D claims of the average adult health nurse practitioner in 2024
5,553 Medicare Part D claims for 205 beneficiaries, against an average of 1,280 among the 16,937 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims. 200 claims were for opioids.
Most prescribed
- Eliquis316 claims
- Levothyroxine Sodium181 claims
- Amlodipine Besylate161 claims
- Trazodone Hcl160 claims
- Furosemide150 claims
- Metoprolol Succinate130 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.
Mary Ellen Schaefer among 6,028 adult health nurse practitioner records in New York
Mary Ellen Schaefer, ANP-C is one of 6,028 adult health nurse practitioner records with a practice address in New York. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 35% of them.
- NPI issued2011 · 35% of these records are older, 61% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileNo · 44% of these records are
- Record last updated2011 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2200X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
10 adult health nurse practitioner records list a practice address in Southampton
They are 10 of the 475 NPPES records with a practice address in Southampton, and 6,028 adult health nurse practitioner records in New York.
All 6,028 in New York → Every provider in Southampton → Adult Health Nurse Practitioner nationwide →
The 8 adult health nurse practitioner records with the nearest ZIP codes
- Agnieszka Brynda, ANPSouthampton, NY 119681598217101
- Kristen Forte, ANP-BC, CRNFASouthampton, NY 119681528104213
- Ana Nonneth GuiangSouthampton, NY 119681174029987
- Lauryn Korsakas, NPSouthampton, NY 119681669867214
- Regina LynchSouthampton, NY 119681851800734
- Francesca MendolaSouthampton, NY 119681811498470
- Patricia Morrison-Sasso, NPSouthampton, NY 119681386630317
- Lisa Snelling, NPSouthampton, NY 119681508378084
Common questions
What is Mary Ellen Schaefer, ANP-C's NPI number?
Mary Ellen Schaefer, ANP-C's National Provider Identifier (NPI) is 1558649244, issued on Jul 28, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Mary Ellen Schaefer, ANP-C located?
The NPPES record lists a practice address at 4 Millstone Dr, Southampton, NY, 11968. Phone: (631) 374-0534. Providers update this record themselves, so call before visiting.
How can I verify Mary Ellen Schaefer, ANP-C's license?
NPPES lists New York license number 305771, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
How much does Mary Ellen Schaefer, ANP-C prescribe under Medicare Part D?
In 2024, Mary Ellen Schaefer, ANP-C had 5,553 Medicare Part D claims for 205 beneficiaries; the average among adult health nurse practitioner prescribers was 1,280. 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.