Quick answers
- Does Michael R. Lenihan Jr. accept Medicare assignment?
- Yes. Medicare's clinician data says Michael R. Lenihan Jr. 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 Michael R. Lenihan Jr. see?
- In 2024, CMS data shows 232 Original Medicare patients and 4,222 services for Michael R. Lenihan Jr.. This counts Original Medicare only and measures volume, not quality.
- What is Michael R. Lenihan Jr.'s NPI number?
- 1174921183. 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 Michael R. Lenihan Jr., 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 | 232 |
|---|---|
| Services billed to Medicare | 4,222 |
| Different services or procedures | 36 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Injection, bupivicaine, not otherwise specified, 0.5 mg (J0665)2,125 services
- Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg (J0702)670 services
- Hyaluronan or derivative, hymovis, for intra-articular injection, 1 mg (J7322)588 services
- Aspiration and/or injection of fluid large joint using ultrasound guidance (20611)323 services
- Hyaluronan or derivative, hyalgan, supartz or visco-3, for intra-articular injection, per dose (J7321)141 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).
- Arthritis75%
- High cholesterol69%
- High blood pressure67%
- Diabetes34%
- Chronic kidney disease25%
- Anxiety21%
Hospitals where Michael R. Lenihan Jr. works
Medicare's Facility Affiliation Data lists Michael R. Lenihan Jr. 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.
- Sharp Chula Vista Medical CenterChula Vista, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050222
Practice locations
Addresses where Michael R. Lenihan Jr. is enrolled with Medicare (CMS data updated October 2, 2026).
- 751 Med Ctr CtChula Vista, CA 91911 (858) 278‑8300
- 88 E Bonita Rd, Suite CChula Vista, CA 91910 (619) 230‑0855
- 9095 Rio San Diego Dr, Suite 450San Diego, CA 92108 (858) 357‑9477
- 955 Lane Ave, Suite 200Chula Vista, CA 91914 (619) 421‑3400
Group practices
Medicare enrollment lists Michael R. Lenihan Jr. as a member of this group (CMS data updated October 2, 2026).
- Synergy Orthopedic Specialists Inc68 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Chula Vista
Clinicians with the same Medicare primary specialty in Chula Vista, CA — not a recommendation.
Other clinicians in Synergy Orthopedic Specialists Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2011 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1174921183 |
| 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