Louis Ng, M.D.
NPI 1558529339 · Anesthesiology Physician · Pomona, CA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Louis Ng, M.D. is a Anesthesiology Physician provider in Pomona, CA (NPI 1558529339).
Provider details
- NPI number
- 1558529339
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A94849 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
12 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Anesthesia for Lens Surgery00142 | 12 | $141 |
Typical Medicare-allowed amounts for these services range $141–$141 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-05-28
- Last updated
- 2008-05-28
Frequently asked questions
- What is Louis Ng's NPI number?
- Louis Ng's National Provider Identifier (NPI) is 1558529339, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Louis Ng's specialty?
- Louis Ng is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Louis Ng located?
- Louis Ng's practice location on file with NPPES is 1798 N Garey Ave, Pomona, CA 91767-2918.
- What is Louis Ng's phone number?
- The practice phone number listed in the NPPES registry for Louis Ng is (909) 865-9140.
- Does Louis Ng accept Medicare?
- Louis Ng is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Louis Ng's NPI active?
- Yes — Louis Ng's NPI (1558529339) is active in the NPPES registry as of the last update on 2008-05-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.