Siobhan Maureen Arey, PA
Physician Assistant · Portsmouth, NH
Siobhan Maureen Arey, PA is a physician assistant with a practice address in Portsmouth, New Hampshire, and NPI 1962912428, issued on Oct 10, 2017. Check the license (New Hampshire 3542, as entered in NPPES) with the New Hampshire board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Siobhan Maureen Arey
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License numbers
- 3542 NH
PA2023 ME
Self-reported in NPPES; status is on the state search - Practice location
- 330 Borthwick Ave Ste 303, Portsmouth, NH 03801
- Phone
- (603) 431-5205
- Enumerated
- Oct 10, 2017
- Record last updated
- Sep 30, 2025
- Fax
- (603) 436-4257
- Medicare enrollment
- Enrolled (PECOS I20250930000850); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 947 in New Hampshire → Look up another NPI →
Also registered at 330 Borthwick Ave Ste 303
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Siobhan Maureen Arey in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New Hampshire board licenses this profession
Search for license 3542Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% fewer Medicare Part D claims than the average physician assistant in 2024
337 Medicare Part D claims for 157 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Clobetasol Propionate51 claims
- Ketoconazole48 claims
- Triamcinolone Acetonide42 claims
- Doxycycline Hyclate18 claims
- Tacrolimus16 claims
- Doxycycline Monohydrate14 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: $736.35
23 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Biotech, Inc. The 64,719 providers of this specialty with any payment received $841.65 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 2 group practices
- Forefront Dermatology - New Hampshire, PLLCPortsmouth, NH
- Mercy HospitalGorham, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Siobhan Maureen Arey among 947 physician assistant records in New Hampshire
Siobhan Maureen Arey, PA is one of 947 physician assistant records with a practice address in New Hampshire. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 48% of them.
- NPI issued2017 · 48% of these records are older, 46% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2017 · median 2017 among the 730 with a school on file
- Record last updated2025 · 37% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a New Hampshire practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
52 physician assistant records list a practice address in Portsmouth
They are 52 of the 1,860 NPPES records with a practice address in Portsmouth, and 947 physician assistant records in New Hampshire.
All 947 in New Hampshire → Every provider in Portsmouth → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Peter Attenborough, PA-CPortsmouth, NH 038011093895369
- Teresa Callahan, PA-CPortsmouth, NH 038011699715649
- Michele Guilfoyle, PA-CPortsmouth, NH 038011336133388
- Malcolm Hauthaway, PACPortsmouth, NH 038011396792156
- Heather Layfield, PA-CPortsmouth, NH 038011992855878
- Kathleen Leavitt, PAPortsmouth, NH 038011821211723
- Kathy Long, PA-CNewington, NH 038011326080250
- Dorothy McGrath, PA-CPortsmouth, NH 038011780641332
Common questions
What is Siobhan Maureen Arey, PA's NPI number?
Siobhan Maureen Arey, PA's National Provider Identifier (NPI) is 1962912428, issued on Oct 10, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Siobhan Maureen Arey, PA located?
The NPPES record lists a practice address at 330 Borthwick Ave Ste 303, Portsmouth, NH, 03801. Phone: (603) 431-5205. Providers update this record themselves, so call before visiting.
How can I verify Siobhan Maureen Arey, PA's license?
NPPES lists New Hampshire license number 3542, as entered by the provider. Search the New Hampshire board that licenses this profession; the NPPES record confirms identity only.
How much does Siobhan Maureen Arey, PA prescribe under Medicare Part D?
In 2024, Siobhan Maureen Arey, PA had 337 Medicare Part D claims for 157 beneficiaries; the average among physician assistant prescribers was 830. 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.