Quick answers
- Does Morgan L. Hennessy accept Medicare assignment?
- Yes. Medicare's clinician data says Morgan L. Hennessy 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 Morgan L. Hennessy see?
- In 2024, CMS data shows 210 Original Medicare patients and 387 services for Morgan L. Hennessy. This counts Original Medicare only and measures volume, not quality.
- What is Morgan L. Hennessy's NPI number?
- 1174053318. 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 Morgan L. Hennessy, 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 | 210 |
|---|---|
| Services billed to Medicare | 387 |
| Different services or procedures | 53 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Critical care, first 30-74 minutes (99291)158 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)67 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)28 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)23 services
- Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)12 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%
- Arthritis68%
- Ischemic heart disease59%
- Diabetes50%
- Chronic kidney disease50%
Hospitals where Morgan L. Hennessy works
Medicare's Facility Affiliation Data lists Morgan L. Hennessy at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Cedar-Sinai Marina del Rey HospitalMarina del Rey, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050740
- Cedars-Sinai Medical CenterLos Angeles, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050625
Practice locations
Addresses where Morgan L. Hennessy is enrolled with Medicare (CMS data updated October 2, 2026).
- 4650 Lincoln BlvdMarina Del Rey, CA 90292 (310) 823‑8911
- 8700 Beverly BlvdWest Hollywood, CA 90048
Group practices
Medicare enrollment lists Morgan L. Hennessy as a member of these groups (CMS data updated October 2, 2026).
- Cedars-Sinai Medical Care Foundation1,692 clinicians in the group
- Cedars-Sinai Medical Center799 clinicians in the group
Specialties
- General Surgeryprimary
- Critical Care (Intensivists)also
Other general surgeons in Marina Del Rey
Clinicians with the same Medicare primary specialty in Marina Del Rey, CA — not a recommendation.
Other clinicians in Cedars-Sinai Medical Care Foundation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Harvard Medical School |
| Graduation year | 2017 (9 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1174053318 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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