Charles Ho, M.D.
NPI 1801902051 · Family Medicine Physician · Ontario, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Ho, M.D. is a Family Medicine Physician provider in Ontario, CA (NPI 1801902051).
Provider details
- NPI number
- 1801902051
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A31364 (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
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 109 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 615 | 179 |
| Amlodipine Besylate | 474 | 139 |
| Metformin Hcl | 313 | 88 |
| Zolpidem Tartrate | 245 | 46 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 239 | 35 |
| Levothyroxine Sodium | 206 | 60 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$323 across 12 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
Registry dates
- Enumerated
- 2006-08-21
- Last updated
- 2007-07-08
Frequently asked questions
- What is Charles Ho's NPI number?
- Charles Ho's National Provider Identifier (NPI) is 1801902051, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Ho's specialty?
- Charles Ho is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Ho located?
- Charles Ho's practice location on file with NPPES is 2525 S Euclid Ave, Ontario, CA 91762-6620.
- What is Charles Ho's phone number?
- The practice phone number listed in the NPPES registry for Charles Ho is (909) 986-2288.
- Does Charles Ho accept Medicare?
- Charles Ho is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Ho's NPI active?
- Yes — Charles Ho's NPI (1801902051) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.