Johanna Cahill, PA
NPI 1255394904 · Physician Assistant · Hartford, CT
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Johanna Cahill, PA is a Physician Assistant provider in Hartford, CT (NPI 1255394904).
Provider details
- NPI number
- 1255394904
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Female
- Sole proprietor
- No
- License
- 001667 (CT)
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 tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
505 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 351 | $67 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 130 | $113 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 24 | $113 |
Typical Medicare-allowed amounts for these services range $67–$113 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Spironolactone | 113 | 44 |
| Torsemide | 71 | 36 |
| Metoprolol Succinate | 65 | 25 |
| Furosemide | 59 | 27 |
| Sacubitril/Valsartanbrand: Entresto | 42 | 16 |
| Atorvastatin Calcium | 33 | — |
| Apixabanbrand: Eliquis | 30 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$167 across 7 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 133 Brookline AveBoston, MA 02215-3904Phone: (617) 421-1000Fax: (617) 421-6084
Registry dates
- Enumerated
- 2006-04-11
- Last updated
- 2018-03-28
Frequently asked questions
- What is Johanna Cahill's NPI number?
- Johanna Cahill's National Provider Identifier (NPI) is 1255394904, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Johanna Cahill's specialty?
- Johanna Cahill is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Johanna Cahill located?
- Johanna Cahill's practice location on file with NPPES is 85 Seymour St Ste 719, Hartford, CT 06106-5560.
- What is Johanna Cahill's phone number?
- The practice phone number listed in the NPPES registry for Johanna Cahill is (860) 522-0604.
- Does Johanna Cahill accept Medicare?
- Johanna Cahill is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Johanna Cahill's NPI active?
- Yes — Johanna Cahill's NPI (1255394904) is active in the NPPES registry as of the last update on 2018-03-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.