Quick answers
- Does James P. Hennessey accept Medicare assignment?
- Yes. Medicare's clinician data says James P. Hennessey accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does James P. Hennessey see?
- In 2024, CMS data shows 468 Original Medicare patients and 501 services for James P. Hennessey. This counts Original Medicare only and measures volume, not quality.
- What is James P. Hennessey's NPI number?
- 1760407886. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for James P. Hennessey, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 468 |
|---|---|
| Services billed to Medicare | 501 |
| Different services or procedures | 15 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Anesthesia for lens surgery (00142)387 services
- Anesthesia for retinal surgery (00145)46 services
- Anesthesia for procedure on eyelid (00103)32 services
- Anesthesia for other procedure on eye (00140)13 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis45%
- Ischemic heart disease27%
- Diabetes26%
- Chronic kidney disease25%
Practice locations
Addresses where James P. Hennessey is enrolled with Medicare (CMS data updated October 2, 2026).
- 10296 Big Bend RdSaint Louis, MO 63122 (314) 735‑0200
- 12990 Manchester Rd, Suite 105Saint Louis, MO 63131
Group practices
Medicare enrollment lists James P. Hennessey as a member of these groups (CMS data updated October 2, 2026).
- Eye Anesthesia LLC14 clinicians in the group
- Gateway Anesthesia Group LLC6 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), Missouri →
Other nurse anesthetists in Saint Louis
Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.
Other clinicians in Eye Anesthesia LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| Graduation year | 2006 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1760407886 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians