Ann Ly, MD
NPI 1851850812 · Neurology Physician · Orange, CA
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ann Ly, MD is a Neurology Physician provider in Orange, CA (NPI 1851850812).
Provider details
- NPI number
- 1851850812
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 212876 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
7 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$529 across 13 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 4445 Magnolia AveGme OfficeRiverside, CA 92501-4199Phone: (951) 788-3000
Registry dates
- Enumerated
- 2019-03-18
- Last updated
- 2025-06-05
- Certified
- 2025-06-05
Frequently asked questions
- What is Ann Ly's NPI number?
- Ann Ly's National Provider Identifier (NPI) is 1851850812, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ann Ly's specialty?
- Ann Ly is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Ann Ly located?
- Ann Ly's practice location on file with NPPES is 101 the City Dr S, Orange, CA 92868-3201.
- What is Ann Ly's phone number?
- The practice phone number listed in the NPPES registry for Ann Ly is (714) 456-8888.
- Does Ann Ly accept Medicare?
- Ann Ly is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ann Ly's NPI active?
- Yes — Ann Ly's NPI (1851850812) is active in the NPPES registry as of the last update on 2025-06-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.