Stephen M. Cahill, PA-C
Physician Assistant · Worcester, MA
Stephen M. Cahill, PA-C is a physician assistant with a practice address in Worcester, Massachusetts, and NPI 1205995123, issued on Dec 6, 2006. Check the license (Massachusetts 2110, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Stephen M. Cahill
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 2110 MA
Self-reported in NPPES; status is on the state search - Practice location
- 55 Lake Avenue North, Worcester, MA 01655
- Phone
- (508) 856-1168
- Enumerated
- Dec 6, 2006
- Record last updated
- Oct 30, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (508) 856-4224
- Medicaid ID
- 110106029A MA
- Medicare enrollment
- Enrolled (PECOS I20061226000078); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 4,713 in Massachusetts → Look up another NPI →
Also registered at 55 Lake Avenue North
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Stephen M. Cahill in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 2110Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 97 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Umass Memorial Medical Group IncWorcester, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephen M. Cahill among 4,713 physician assistant records in Massachusetts
Stephen M. Cahill, PA-C is one of 4,713 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 1% of them.
- NPI issued2006 · 1% of these records are older, 87% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2005 · median 2019 among the 3,217 with a school on file
- Record last updated2020 · 38% 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 Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
425 physician assistant records list a practice address in Worcester
They are 425 of the 13,166 NPPES records with a practice address in Worcester, and 4,713 physician assistant records in Massachusetts.
All 4,713 in Massachusetts → Every provider in Worcester → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Michael Bennett, PA-CWorcester, MA 016551396724563
- Jennifer Bernardo-Bailey, PAWorcester, MA 016551447267166
- Stacy Brown, PA-CWorcester, MA 016551679548515
- Colleen Casey, P.A.Worcester, MA 016551962476218
- Erin Dunne, PA-CWorcester, MA 016551780694851
- Linda Fagundes, PA-CWorcester, MA 016551710952064
- Jeffery Giarnese, P.A.Worcester, MA 016551114991130
- Donna Marie Hayden, PA-CWorcester, MA 016551063487718
Common questions
What is Stephen M. Cahill, PA-C's NPI number?
Stephen M. Cahill, PA-C's National Provider Identifier (NPI) is 1205995123, issued on Dec 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Stephen M. Cahill, PA-C located?
The NPPES record lists a practice address at 55 Lake Avenue North, Worcester, MA, 01655. Phone: (508) 856-1168. Providers update this record themselves, so call before visiting.
How can I verify Stephen M. Cahill, PA-C's license?
NPPES lists Massachusetts license number 2110, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
What is Stephen M. Cahill, PA-C's MIPS final score?
The 2023 MIPS final score is 97 of 100. 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.