Stephen Cahill, PA-C
NPI 1205995123 · Physician Assistant · Worcester, MA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Cahill, PA-C is a Physician Assistant provider in Worcester, MA (NPI 1205995123).
Provider details
- NPI number
- 1205995123
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- No
- License
- 2110 (MA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
170 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Critical Care, Each Additional 30 Minutes99292 | 111 | $89 |
| Critical Care, First 30-74 Minutes99291 | 59 | $177 |
Typical Medicare-allowed amounts for these services range $89–$177 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-12-06
- Last updated
- 2020-10-30
- Certified
- 2020-10-30
Frequently asked questions
- What is Stephen Cahill's NPI number?
- Stephen Cahill's National Provider Identifier (NPI) is 1205995123, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Cahill's specialty?
- Stephen Cahill is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Stephen Cahill located?
- Stephen Cahill's practice location on file with NPPES is 55 Lake Avenue North, Worcester, MA 01655.
- What is Stephen Cahill's phone number?
- The practice phone number listed in the NPPES registry for Stephen Cahill is (508) 856-1168.
- Does Stephen Cahill accept Medicare?
- Stephen Cahill is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Cahill's NPI active?
- Yes — Stephen Cahill's NPI (1205995123) is active in the NPPES registry as of the last update on 2020-10-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.