What is Charles Hollas's NPI number?

Charles Hollas's National Provider Identifier (NPI) is 1831195890, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Charles Hollas's specialty?

Charles Hollas is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).

Where is Charles Hollas located?

Charles Hollas's practice location on file with NPPES is 18040 Saturn Ln, Houston, TX 77058-4500.

What is Charles Hollas's phone number?

The practice phone number listed in the NPPES registry for Charles Hollas is (281) 333-8600.

Does Charles Hollas accept Medicare?

Charles Hollas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Charles Hollas's NPI active?

Yes — Charles Hollas's NPI (1831195890) is active in the NPPES registry as of the last update on 2023-11-27.

IndividualActiveAccepts Medicare

Charles Hollas, OD

NPI 1831195890 · Optometrist · Houston, TX

Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Charles Hollas, OD is a Optometrist provider in Houston, TX (NPI 1831195890).

Provider details

NPI number: 1831195890
Entity type: Individual
Primary specialty: OptometristEye and Vision Services Providers
Credential: OD
Sex: Male
Sole proprietor: No
License: 5863TG (TX)

Specialties & taxonomies

OptometristPrimary152W00000XLicense 5863TG (TX)
Eye and Vision Services Providers

Profile Score

Detailed profile(88/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure25% of score
21 yrs in NPPES registry
Profile completeness25% of score
100% of core fields populated
Practice footprint15% of score
2 documented practice locations
Medicare service volume (vs. specialty peers)25% of score
1,051 Medicare services, 2024 (ranked within specialty)
Open Payments transparency10% of score
Has Open Payments disclosures (2024)

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 .

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)
Established Patient Complete Exam of Visual System92014	501	$120
Established Patient Problem Focused Exam of Visual System92012	252	$85
New Patient Complete Exam of Visual System92004	125	$142
Exam of Visual Field With Extended Testing92083	64	$59
Imaging of Optic Nerve92133	48	$34
Imaging of Retina92134	46	$38
New Patient Problem Focused Exam of Visual System92002

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Latanoprost	187	79
Brimonidine Tartrate	71	32
Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol	49	23
Timolol Maleate	41	11
Dorzolamide Hcl	33	14
Prednisolone Acetate	28	22
Fluorometholone	25	22
Neomycin/Polymyxin B/Dexametha

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$164 across 2 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

18040 Saturn Ln

Houston, TX 77058-4500

Phone: (281) 333-8600

Fax: (281) 333-4800

Approximate (ZIP-level) locationGet directions

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Mailing address