Donna M. Trees-Barker, ANP
Adult Health Nurse Practitioner · Hampton Bays, NY
Donna M. Trees-Barker, ANP is an adult health nurse practitioner with a practice address in Hampton Bays, New York, and NPI 1710131412, issued on Nov 7, 2008. Check the license (New York F301231, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Donna M. Trees-Barker
- Credential
- ANP
- Primary taxonomy
- Adult Health Nurse Practitioner 363LA2200X
- License number
- F301231 NY
Self-reported in NPPES; status is on the state search - Practice location
- Hampton Medical Care, Hampton Bays, NY 11946
- Phone
- (631) 728-8035
- Enumerated
- Nov 7, 2008
- Record last updated
- Oct 30, 2023
- Fax
- (631) 732-4534
- Medicare enrollment
- Enrolled (PECOS I20181008003027); accepts Medicare assignment
- Medical or professional school
- State University Of New York At Stony Brook, School Of Medicine, 1994
- Entity
- Type 1 · individual
8 nearest adult health nurse practitioner records → All 6,028 in New York → Look up another NPI →
Verify Donna M. Trees-Barker 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 F301231Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
38% fewer Medicare Part D claims than the average adult health nurse practitioner in 2024
789 Medicare Part D claims for 274 beneficiaries, against an average of 1,280 among the 16,937 providers of this specialty who prescribed in Part D.
Most prescribed
- Prednisone34 claims
- Atorvastatin Calcium32 claims
- Levothyroxine Sodium31 claims
- Fluticasone Propionate23 claims
- Amlodipine Besylate22 claims
- Montelukast Sodium22 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: $1,159.79
32 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 12,291 providers of this specialty with any payment received $946.40 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
- Chs Physician Partners PCRoslyn, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Donna M. Trees-Barker among 6,028 adult health nurse practitioner records in New York
Donna M. Trees-Barker, ANP 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 2008, is newer than 22% of them.
- NPI issued2008 · 22% of these records are older, 72% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 44% of these records are
- Graduated1994 · median 2016 among the 2,678 with a school on file
- Record last updated2023 · 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).
9 adult health nurse practitioner records list a practice address in Hampton Bays
They are 9 of the 226 NPPES records with a practice address in Hampton Bays, and 6,028 adult health nurse practitioner records in New York.
All 6,028 in New York → Every provider in Hampton Bays → Adult Health Nurse Practitioner nationwide →
The 8 adult health nurse practitioner records with the nearest ZIP codes
- Christine Abbate, MSN, APRN, AGPCNP-BCHampton Bays, NY 119461629732680
- Lora Allen, AGNP-MSHampton Bays, NY 119461942616487
- Barbara Bendowski, NPHampton Bays, NY 119461073866570
- Heidemarie Grattan, ANPBaiting Hollow, NY 119461427382456
- Deidre HanbachHampton Bays, NY 119461912784356
- Shannon MundayHampton Bays, NY 119461154973568
- Pirjo Sorgi, NPHampton Bays, NY 119461205391323
- Maureen StefanidisHampton Bays, NY 119461063938538
Common questions
What is Donna M. Trees-Barker, ANP's NPI number?
Donna M. Trees-Barker, ANP's National Provider Identifier (NPI) is 1710131412, issued on Nov 7, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Donna M. Trees-Barker, ANP located?
The NPPES record lists a practice address at Hampton Medical Care, Hampton Bays, NY, 11946. Phone: (631) 728-8035. Providers update this record themselves, so call before visiting.
How can I verify Donna M. Trees-Barker, ANP's license?
NPPES lists New York license number F301231, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
How much does Donna M. Trees-Barker, ANP prescribe under Medicare Part D?
In 2024, Donna M. Trees-Barker, ANP had 789 Medicare Part D claims for 274 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.