Kathleen Irene O'Brien, P.A.-C
Physician Assistant · Topsham, ME
Kathleen Irene O'Brien, P.A.-C is a physician assistant with a practice address in Topsham, Maine, and NPI 1942597661, issued on Jul 1, 2011. Check the license (Maine PA1272, as entered in NPPES) with the Maine board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kathleen Irene O'Brien
- Credential
- P.A.-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA1272 ME
Self-reported in NPPES; status is on the state search - Practice location
- 1 Wellness Way, Topsham, ME 04086
- Phone
- (207) 406-7600
- Enumerated
- Jul 1, 2011
- Record last updated
- Aug 24, 2023
- Fax
- (207) 618-5683
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 979 in Maine → Look up another NPI →
Also registered at 1 Wellness Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Debra Francis, NPNurse Practitioner1497483465
- Shannon Gaines, PA-CPhysician Assistant1588277958
Verify Kathleen Irene O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maine board licenses this profession
Search for license PA1272Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9% more Medicare Part D claims than the average physician assistant in 2024
908 Medicare Part D claims for 247 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium57 claims
- Lisinopril53 claims
- Hydrochlorothiazide40 claims
- Amlodipine Besylate39 claims
- Levothyroxine Sodium35 claims
- Amitriptyline Hcl34 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: $23.13
1 payment: food and beverage; the largest payer was Regeneron Healthcare Solutions, 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.
Kathleen Irene O'Brien among 979 physician assistant records in Maine
Kathleen Irene O'Brien, P.A.-C is one of 979 physician assistant records with a practice address in Maine. 79% 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 40% of them.
- NPI issued2011 · 40% of these records are older, 58% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2023 · 47% 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 Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
8 physician assistant records list a practice address in Topsham
They are 8 of the 184 NPPES records with a practice address in Topsham, and 979 physician assistant records in Maine.
All 979 in Maine → Every provider in Topsham → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Andree Appel, P.A.Topsham, ME 040861841392438
- Kai Cheng, PA-CTopsham, ME 040861891143681
- Shannon Gaines, PA-CTopsham, ME 040861588277958
- Tricia Garrett, MSTopsham, ME 040861477042406
- Danielle Lapierre-Burke, PATopsham, ME 040861720785199
- Jillian Marden, PA-C, RDTopsham, ME 040861740685908
- Danielle Vanstrien, PA-CTopsham, ME 040861679901540
- Brooke Murch, PAWaterford, ME 040881730840067
Common questions
What is Kathleen Irene O'Brien, P.A.-C's NPI number?
Kathleen Irene O'Brien, P.A.-C's National Provider Identifier (NPI) is 1942597661, issued on Jul 1, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Kathleen Irene O'Brien, P.A.-C located?
The NPPES record lists a practice address at 1 Wellness Way, Topsham, ME, 04086. Phone: (207) 406-7600. Providers update this record themselves, so call before visiting.
How can I verify Kathleen Irene O'Brien, P.A.-C's license?
NPPES lists Maine license number PA1272, as entered by the provider. Search the Maine board that licenses this profession; the NPPES record confirms identity only.
How much does Kathleen Irene O'Brien, P.A.-C prescribe under Medicare Part D?
In 2024, Kathleen Irene O'Brien, P.A.-C had 908 Medicare Part D claims for 247 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.