Jessica O'Brien, P.A.
Medical Physician Assistant · Greenwich, CT
Jessica O'Brien, P.A. is a medical physician assistant with a practice address in Greenwich, Connecticut, and NPI 1710902457, issued on Jul 13, 2006. Check the license with the Connecticut board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Jessica O'Brien
- Credential
- P.A.
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- 008468 NY
Self-reported in NPPES; status is on the state search - Practice location
- 5 Perryridge RD, Greenwich, CT 06830
- Phone
- (203) 863-3637
- Enumerated
- Jul 13, 2006
- Record last updated
- Apr 13, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20051118000489); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 1,138 in Connecticut → Look up another NPI →
Also registered at 5 Perryridge RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tena AbrahamPharmacist1649838905
- Hanief Abrahams, M.D.Anesthesiology Physician1497798235
- Diana Adams, M.D.Maternal & Fetal Medicine Physician1255300653
- Saheeb AhmedStudent in an Organized Health Care Education/Training Program1326626748
- Rachel Alfandre, LCSWClinical Social Worker1497077259
- Vicki Altmeyer, M.D.Anatomic Pathology & Clinical Pathology Physician1700807898
Verify Jessica O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Connecticut board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average medical physician assistant in 2024
133 Medicare Part D claims for 96 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. 15 claims were for opioids.
Most prescribed
- Cefuroxime16 claims
- Cephalexin16 claims
- Amoxicillin-Clavulanate Potass12 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 70.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $32.51
1 payment: food and beverage; the largest payer was Medtronic, Inc. The 16,165 providers of this specialty with any payment received $1,055.00 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
- Greenwich HospitalGreenwich, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jessica O'Brien among 1,138 medical physician assistant records in Connecticut
Jessica O'Brien, P.A. is one of 1,138 medical physician assistant records with a practice address in Connecticut. 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 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 76% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2000 · median 2015 among the 732 with a school on file
- Record last updated2020 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Physician Assistant providers in Connecticut
There are 1,138 medical physician assistant records in Connecticut.
All 1,138 in Connecticut → Every provider in Greenwich → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Stephanie Chawla, PA-CGreenwich, CT 068301497809743
- Nancy Copeland Kelley, PAGreenwich, CT 068301750692299
- Dominique Deangelis, PA-CGreenwich, CT 068301245006147
- Fatbardha Kodzodziku, PAGreenwich, CT 068301659769354
- Nayra Labrecque, PA-CGreenwich, CT 068301932290269
- Eunjin Park, PAGreenwich, CT 068301124078449
- Kaitlyn Rahtelli, PA-CGreenwich, CT 068301720437833
- Hope Sullivan, PA-CGreenwich, CT 068301922641745
Common questions
What is Jessica O'Brien, P.A.'s NPI number?
Jessica O'Brien, P.A.'s National Provider Identifier (NPI) is 1710902457, issued on Jul 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jessica O'Brien, P.A. located?
The NPPES record lists a practice address at 5 Perryridge RD, Greenwich, CT, 06830. Phone: (203) 863-3637. Providers update this record themselves, so call before visiting.
How can I verify Jessica O'Brien, P.A.'s license?
Search the Connecticut board that licenses this profession; the NPPES record confirms identity only.
How much does Jessica O'Brien, P.A. prescribe under Medicare Part D?
In 2024, Jessica O'Brien, P.A. had 133 Medicare Part D claims for 96 beneficiaries; the average among medical physician assistant prescribers was 1,148. Part D covers Medicare prescriptions only.
What is Jessica O'Brien, P.A.'s MIPS final score?
The 2023 MIPS final score is 70.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.