Quick answers
- Does Andrew W. Merritt accept Medicare assignment?
- Yes. Medicare's clinician data says Andrew W. Merritt 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 Andrew W. Merritt see?
- In 2024, CMS data shows 184 Original Medicare patients and 2,771 services for Andrew W. Merritt. This counts Original Medicare only and measures volume, not quality.
- What is Andrew W. Merritt's NPI number?
- 1760455174. 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 Andrew W. Merritt, 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 | 184 |
|---|---|
| Services billed to Medicare | 2,771 |
| Different services or procedures | 45 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Telephone medical discussion with physician, 11-20 minutes (99442)1,050 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)953 services
- Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)133 services
- Complete ultrasound scan of joint (76881)59 services
- Injection, ketorolac tromethamine, per 15 mg (J1885)48 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 cholesterol75%
- Arthritis75%
- High blood pressure71%
- Anxiety28%
- Chronic kidney disease26%
- Depression24%
Practice locations
Addresses where Andrew W. Merritt is enrolled with Medicare (CMS data updated October 2, 2026).
- 23141 Moulton Pkwy, Suite 201Laguna Hills, CA 92653 (949) 900‑1300
Group practices
Medicare enrollment lists Andrew W. Merritt as a member of this group (CMS data updated October 2, 2026).
- Andrew W Merritt MD Inc3 clinicians in the group
Specialties
Find other Physical Medicine and Rehabilitation doctors in California →
Other rehabilitation doctors in Laguna Hills
Clinicians with the same Medicare primary specialty in Laguna Hills, CA — not a recommendation.
Other clinicians in Andrew W Merritt MD Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Vanderbilt University School Of Medicine |
| Graduation year | 1996 (30 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1760455174 |
| 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