Quick answers
- Does Vivian S. Lo accept Medicare assignment?
- Yes. Medicare's clinician data says Vivian S. Lo 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 Vivian S. Lo see?
- In 2024, CMS data shows 78 Original Medicare patients and 138 services for Vivian S. Lo. This counts Original Medicare only and measures volume, not quality.
- What is Vivian S. Lo's NPI number?
- 1144381872. 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 Vivian S. Lo, 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 | 78 |
|---|---|
| Services billed to Medicare | 138 |
| Different services or procedures | 15 |
| Participating Medicare provider | Yes |
| Average age of these patients | 70 |
Most frequent services
- Cervical or vaginal cancer screening; pelvic and clinical breast examination (G0101)53 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)28 services
- Screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory (Q0091)14 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%
- High blood pressure56%
- Arthritis41%
- Osteoporosis32%
- Anxiety26%
- Diabetes24%
Practice locations
Addresses where Vivian S. Lo is enrolled with Medicare (CMS data updated October 2, 2026).
- 520 Pleasant Valley Way, Women 1st Hlth CtrWest Orange, NJ 07052 (973) 669‑5711
Group practices
Medicare enrollment lists Vivian S. Lo as a member of this group (CMS data updated October 2, 2026).
- Regional Womens Health Group LLC354 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in West Orange
Clinicians with the same Medicare primary specialty in West Orange, NJ — not a recommendation.
Other clinicians in Regional Womens Health Group LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Jefferson Medical College Of Thomas Jefferson University |
| Graduation year | 1997 (29 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1144381872 |
| 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