Quick answers
- Does Lauren F. Macmillan accept Medicare assignment?
- Yes. Medicare's clinician data says Lauren F. Macmillan 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 Lauren F. Macmillan see?
- In 2024, CMS data shows 97 Original Medicare patients and 240 services for Lauren F. Macmillan. This counts Original Medicare only and measures volume, not quality.
- What is Lauren F. Macmillan's NPI number?
- 1477506509. 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 Lauren F. Macmillan, 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 | 97 |
|---|---|
| Services billed to Medicare | 240 |
| Different services or procedures | 12 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Psychotherapy, 45 minutes (90834)118 services
- Psychotherapy, 1 hour (90837)40 services
- Exam of neurobehavioral status, first hour (96116)35 services
- Psychiatric diagnostic evaluation (90791)28 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 pressure74%
- High cholesterol70%
- Arthritis58%
- Anxiety53%
- Depression45%
- Ischemic heart disease29%
Hospitals where Lauren F. Macmillan works
Medicare's Facility Affiliation Data lists Lauren F. Macmillan 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.
- Keck Hospital of USCLos Angeles, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: not listed by Medicare · CCN 050696
Practice locations
Addresses where Lauren F. Macmillan is enrolled with Medicare (CMS data updated October 2, 2026).
- 1520 San Pablo StLos Angeles, CA 90033 (800) 872‑2273
- 1520 San Pablo St, Fl 4Los Angeles, CA 90033 (800) 872‑2273
- 1520 San Pablo St 1st Floor NLos Angeles, CA 90033 (800) 872‑2273
- 625 S Fair Oaks AvePasadena, CA 91105 (626) 683‑9000
- 625 S Fair Oaks Ave, Suite 250Pasadena, CA 91105 (626) 795‑5848
Group practices
Medicare enrollment lists Lauren F. Macmillan as a member of this group (CMS data updated October 2, 2026).
- USC Care Medical Group Inc1,380 clinicians in the group
Specialties
- Clinical Psychologistprimary
Other clinical psychologists in Los Angeles
Clinicians with the same Medicare primary specialty in Los Angeles, CA — not a recommendation.
Other clinicians in USC Care Medical Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | CP |
|---|---|
| Graduation year | 2001 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1477506509 |
| 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