Maureen O'Brien, PA
Physician Assistant · Ithaca, NY
Maureen O'Brien, PA is a physician assistant with a practice address in Ithaca, New York, and NPI 1669663274, issued on Aug 8, 2007. Check the license (New York 011971, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Maureen O'Brien
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License numbers
- 011971 NY
4879 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 1001 W Seneca St, Ithaca, NY 14850
- Phone
- (585) 273-7000
- Enumerated
- Aug 8, 2007
- Record last updated
- Aug 7, 2024
- Medicare enrollment
- Enrolled (PECOS I20071024000176); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 15,555 in New York → Look up another NPI →
Also registered at 1001 W Seneca St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Pamela Billington, OTR/LPediatric Occupational Therapist1447406723
- Jacob Blaine, MS, PTPhysical Therapist1649422155
- Carol BoothSpecialist1629331566
- Meaghan Colleran, LMSWSocial Worker1982375549
- Sheryl Edwards, SLPSpeech-Language Pathologist1699923896
- Nancy Emerson, M.S. CCC-SLPSpeech-Language Pathologist1922205913
Verify Maureen O'Brien 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 011971Check 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 physician assistant in 2024
262 Medicare Part D claims for 67 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Buprenorphine-Naloxone97 claims
- Buprenorphine Hcl84 claims
- Suboxone40 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
- Reach Medical PLLCIthaca, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Maureen O'Brien among 15,555 physician assistant records in New York
Maureen O'Brien, PA is one of 15,555 physician assistant records with a practice address in New York. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 13% of them.
- NPI issued2007 · 13% of these records are older, 80% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 52% of these records are
- Graduated2007 · median 2018 among the 8,158 with a school on file
- Record last updated2024 · 48% 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 York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
94 physician assistant records list a practice address in Ithaca
They are 94 of the 2,215 NPPES records with a practice address in Ithaca, and 15,555 physician assistant records in New York.
All 15,555 in New York → Every provider in Ithaca → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Joseph Blood, PACIthaca, NY 148501679501811
- Thomas Brown, PAIthaca, NY 148501144323049
- George Cameron, PACIthaca, NY 148501417926692
- Susan Carlisle, RPA-CIthaca, NY 148501225042443
- Arthur George, RPACIthaca, NY 148501306925912
- Kelli Hektor, P.A.Ithaca, NY 148501407956980
- Julie Higgins, PAIthaca, NY 148501073534590
- Paul Jones, PACIthaca, NY 148501013008457
Common questions
What is Maureen O'Brien, PA's NPI number?
Maureen O'Brien, PA's National Provider Identifier (NPI) is 1669663274, issued on Aug 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Maureen O'Brien, PA located?
The NPPES record lists a practice address at 1001 W Seneca St, Ithaca, NY, 14850. Phone: (585) 273-7000. Providers update this record themselves, so call before visiting.
How can I verify Maureen O'Brien, PA's license?
NPPES lists New York license number 011971, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
How much does Maureen O'Brien, PA prescribe under Medicare Part D?
In 2024, Maureen O'Brien, PA had 262 Medicare Part D claims for 67 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.