Kellyann O'Brien, PA-C
Medical Physician Assistant · Springfield, MA
Kellyann O'Brien, PA-C is a medical physician assistant with a practice address in Springfield, Massachusetts, and NPI 1619910155, issued on Jun 13, 2006. Check the license (Massachusetts PA4823, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kellyann O'Brien
- Credential
- PA-C
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- PA4823 MA
Self-reported in NPPES; status is on the state search - Practice location
- 3400 Main St, Springfield, MA 01107
- Phone
- (413) 794-9560
- Enumerated
- Jun 13, 2006
- Record last updated
- Nov 17, 2023
- Fax
- (413) 794-5884
- Medicare enrollment
- Enrolled (PECOS I20160714002066); accepts Medicare assignment
- Medical or professional school
- Yale University School Of Medicine, 2004
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 886 in Massachusetts → Look up another NPI →
Also registered at 3400 Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jeffrey Cossin, MDInternal Medicine Physician1740297407
- Jodi Devine, LICSWClinical Social Worker1922122936
- Sunders Dorcely, ARNPFamily Nurse Practitioner1104333962
Verify Kellyann O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license PA4823Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average medical physician assistant in 2024
67 Medicare Part D claims for 49 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D.
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 LLCFalmouth, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kellyann O'Brien among 886 medical physician assistant records in Massachusetts
Kellyann O'Brien, PA-C is one of 886 medical physician assistant records with a practice address in Massachusetts. 78% 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 2% of them.
- NPI issued2006 · 2% of these records are older, 78% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2004 · median 2015 among the 559 with a school on file
- Record last updated2023 · 53% 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 Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
182 medical physician assistant records list a practice address in Springfield
They are 182 of the 8,553 NPPES records with a practice address in Springfield, and 886 medical physician assistant records in Massachusetts.
All 886 in Massachusetts → Every provider in Springfield → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Robin Buckingham, PA-CSpringfield, MA 011071578654869
- Christina Camara, P.A.Springfield, MA 011071144204298
- Francesca Carlucci, P.A.Springfield, MA 011071508846981
- Kimberly Lookner, PA-CSpringfield, MA 011071457335093
- Patrick Madden, PA-CSpringfield, MA 011071679556385
- Viktoria Madden, PASpringfield, MA 011071326074998
- Anissa Newman, PA-CSpringfield, MA 011071275603169
- Kammille Oborne, P.A.Springfield, MA 011071598745978
Common questions
What is Kellyann O'Brien, PA-C's NPI number?
Kellyann O'Brien, PA-C's National Provider Identifier (NPI) is 1619910155, issued on Jun 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Kellyann O'Brien, PA-C located?
The NPPES record lists a practice address at 3400 Main St, Springfield, MA, 01107. Phone: (413) 794-9560. Providers update this record themselves, so call before visiting.
How can I verify Kellyann O'Brien, PA-C's license?
NPPES lists Massachusetts license number PA4823, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Kellyann O'Brien, PA-C prescribe under Medicare Part D?
In 2024, Kellyann O'Brien, PA-C had 67 Medicare Part D claims for 49 beneficiaries; the average among medical physician assistant prescribers was 1,148. 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.