Charles Huang, M.D.
NPI 1023080355 · Ophthalmology Physician · Vacaville, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Huang, M.D. is a Ophthalmology Physician provider in Vacaville, CA (NPI 1023080355).
Provider details
- NPI number
- 1023080355
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A88833 (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
20 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 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 744 | 312 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 462 | 161 |
| Diclofenac Sodium | 227 | 177 |
| Brimonidine Tartrate | 220 | 93 |
| Timolol Maleate | 169 | 72 |
| Levobunolol Hcl | 134 | 48 |
| Prednisolone Acetate | 90 | 65 |
| Cyclosporine | 59 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$146 across 1 record (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
- 2006-02-02
- Last updated
- 2022-02-11
Frequently asked questions
- What is Charles Huang's NPI number?
- Charles Huang's National Provider Identifier (NPI) is 1023080355, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Huang's specialty?
- Charles Huang is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Huang located?
- Charles Huang's practice location on file with NPPES is 3700 Vaca Valley Pkwy, Vacaville, CA 95688-9430.
- What is Charles Huang's phone number?
- The practice phone number listed in the NPPES registry for Charles Huang is (707) 453-5600.
- Does Charles Huang accept Medicare?
- Charles Huang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Huang's NPI active?
- Yes — Charles Huang's NPI (1023080355) is active in the NPPES registry as of the last update on 2022-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.