Anthony W. Posuniak, FNP-BC
Nurse Practitioner · Bangor, ME
Anthony W. Posuniak, FNP-BC is a nurse practitioner with a practice address in Bangor, Maine, and NPI 1437723764, issued on May 20, 2021. Check the license (Maine CNP211223, as entered in NPPES) with the Maine board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Anthony W. Posuniak
- Credential
- FNP-BC
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- CNP211223 ME
Self-reported in NPPES; status is on the state search - Practice location
- 543 Broadway, Bangor, ME 04401
- Phone
- (207) 922-1300
- Enumerated
- May 20, 2021
- Record last updated
- Nov 17, 2023
- Medicare enrollment
- Enrolled (PECOS I20210625001911); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 450 in Maine → Look up another NPI →
Also registered at 543 Broadway
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Taylor Haun, PA-CPhysician Assistant1669344834
- Katelyn Saucier, FNP-BCNurse Practitioner1497487326
- Mary White, PAPhysician Assistant1003290313
Verify Anthony W. Posuniak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maine board licenses this profession
Search for license CNP211223Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
68% fewer Medicare Part D claims than the average nurse practitioner in 2024
355 Medicare Part D claims for 286 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
- Amoxicillin-Clavulanate Potass62 claims
- Prednisone36 claims
- Cephalexin33 claims
- Nitrofurantoin Mono-Macro30 claims
- Doxycycline Hyclate27 claims
- Sulfamethoxazole-Trimethoprim20 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.
Bills Medicare through one group practice
- Convenientmd - Ffs UC LLCEllsworth, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Anthony W. Posuniak among 450 nurse practitioner records in Maine
Anthony W. Posuniak, FNP-BC is one of 450 nurse practitioner records with a practice address in Maine. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 81% of them.
- NPI issued2021 · 81% of these records are older, 14% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2021 · median 2017 among the 258 with a school on file
- Record last updated2023 · 54% 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 Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
61 nurse practitioner records list a practice address in Bangor
They are 61 of the 3,103 NPPES records with a practice address in Bangor, and 450 nurse practitioner records in Maine.
All 450 in Maine → Every provider in Bangor → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Jane Beaudoin, N.P.Bangor, ME 044011144255142
- Frank Breznyak, NPBangor, ME 044011881642544
- Karen Buterbaugh, FNPBangor, ME 044011972546497
- Lisa Carroll, FNPCBangor, ME 044011194721548
- Cheryll Cote, FNP-CBangor, ME 044011467403014
- Ardelle Hollrock, FNPBangor, ME 044011588605208
- Diane James, FNPBangor, ME 044011821031311
- Maureen Jarrett, NP-CBangor, ME 044011376569962
Common questions
What is Anthony W. Posuniak, FNP-BC's NPI number?
Anthony W. Posuniak, FNP-BC's National Provider Identifier (NPI) is 1437723764, issued on May 20, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Anthony W. Posuniak, FNP-BC located?
The NPPES record lists a practice address at 543 Broadway, Bangor, ME, 04401. Phone: (207) 922-1300. Providers update this record themselves, so call before visiting.
How can I verify Anthony W. Posuniak, FNP-BC's license?
NPPES lists Maine license number CNP211223, as entered by the provider. Search the Maine board that licenses this profession; the NPPES record confirms identity only.
How much does Anthony W. Posuniak, FNP-BC prescribe under Medicare Part D?
In 2024, Anthony W. Posuniak, FNP-BC had 355 Medicare Part D claims for 286 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.