NPI registry status
Active
2026 NPPES data Corneal and Contact Management Optometrist NPI 1134294549 O.D.
Verify on CMS → Charles Holland, O.D.
Corneal and Contact Management Optometrist in Oskaloosa, Kansas.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,548 in Corneal and Contact Management Optometrist, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
259
Medicare Part D claims · 61 beneficiaries · Corneal and Contact Management Optometrist avg: 235
Generic prescribing
78%
generic claims · 22% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Charles Holland, O.D. filed 259 Medicare Part D claims in 2023 as a Corneal and Contact Management Optometrist in Oskaloosa, Kansas, prescribing 78% generic.
- 259
- Part D claims, 2023
- 78%
- generic prescribing
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Charles Holland, O.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
259 49th percentile higher than 49% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Medicare Part D Prescriber Public Use File · 2023
What does the federal data show about Charles Holland, O.D.?
Quality data not reportedPrimary specialty
Corneal and Contact Management Optometrist
Medicare Part D claims
259 10% vs specialty avg
Specialty distribution in Kansas
How Corneal and Contact Management Optometrist compares to other specialties among Kansas providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Corneal and Contact Management Optometrist. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Charles Holland, O.D. appears in the CMS NPPES registry as a Corneal and Contact Management Optometrist provider holding O.D. credentials at 1106 WALNUT ST, Oskaloosa, KS, 66066, with a listed phone of (785) 863-2000. NPI 1134294549 was issued on 11/21/2006.
Medicare Part D records for calendar year 2023 show 259 prescription claims written by this provider, covering 61 Medicare beneficiaries and totaling roughly $25K in drug spend, split 22% brand-name and 78% generic by claim count.
Corneal and Contact Management Optometrist is a narrow specialty nationwide, with 1,548 enrolled providers across 52 states and an average of 235 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1134294549 |
|---|---|
| Specialty | Corneal and Contact Management Optometrist |
| Credentials | O.D. |
| Gender | Male |
| NPI Issued | 11/21/2006 |
Hospital and facility affiliations
Facilities where Charles Holland, O.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Holland Eye Clinic, P.A.
Oskaloosa, KS
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Typical
Charles Holland, O.D. - brand share 22.0%
Corneal and Contact Management Optometrist average
22% brand-name claims vs 78% generic, on 259 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
259
Total Claims
$25K
Total Drug Cost
61
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 349
- Total Day Supply
- 9,179
- Brand vs Generic
- 22% brand / 78% generic
- Brand Drug Cost
- $20K
- Generic Drug Cost
- $4K
Patient Demographics
- Average Patient Age
- 77.1 years
- Avg HCC Risk Score
- 1.34
- Gender Split
- 56% female / 44% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Charles Holland, O.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Latanoprost
Latanoprost
119 claims
- Dorzolamide-Timolol 25
Dorzolamide-Timolol
25 claims
- Timolol Maleate 25
Timolol Maleate
25 claims
- Neomycin-Polymyxin… 21
Neomycin-Polymyxin-Dexameth
21 claims
- Prednisolone Acetate 20
Prednisolone Acetate
20 claims
- Restasis 15
Restasis
15 claims
| Drug | Claims |
|---|---|
| Latanoprost | 119 |
| Dorzolamide-Timolol Dorzolamide Hcl/Timolol Maleat | 25 |
| Timolol Maleate | 25 |
| Neomycin-Polymyxin-Dexameth Neomycin/Polymyxin B/Dexametha | 21 |
| Prednisolone Acetate | 20 |
| Restasis Cyclosporine | 15 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Corneal and Contact Management Optometrist in KS →
All providers in Kansas →
Compare specialties →
Corneal and Contact Management Optometrist Overview
How Charles Holland, O.D. fits within the Corneal and Contact Management Optometrist landscape nationally.
1,548
Corneal and Contact Management Optometrist Providers in US
52
States with Corneal and Contact Management Optometrist
235
Avg Claims per Provider
Charles Holland, O.D.'s 259 claims are above the specialty average of 235.
Nearby Corneal and Contact Management Optometrist Providers in Kansas
Other clinicians with the same primary specialty enrolled in Kansas, drawn from the same CMS NPPES roster as Holland.
Dr. Andrea Beatty
O.D.
Shawnee, KS
Dr. Raymond Brill
OD, FAAO, FOAA
Mission, KS
Dr. Jay Burlingame
O.D.
Overland Park, KS
Dr. Michael Hattan
OD
Hays, KS
Dr. Amy Havens Lower
O.D.
Hiawatha, KS
Compare Corneal and Contact Management Optometrist nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Kansas medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Corneal and Contact Management Optometrist peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Charles Holland, O.D.'s specialty? ▼
Charles Holland, O.D. specializes in Corneal and Contact Management Optometrist and practices in Oskaloosa, Kansas. Credentials: O.D..
How much does Charles Holland, O.D. prescribe under Medicare Part D? ▼
In 2023, Charles Holland, O.D. wrote 259 Medicare Part D claims totaling $25K in drug costs for 61 beneficiaries.
Where is Charles Holland, O.D. located? ▼
Charles Holland, O.D. is located at 1106 WALNUT ST, Oskaloosa, KS, 66066. Phone: (785) 863-2000.
What is Charles Holland, O.D.'s NPI number? ▼
Charles Holland, O.D.'s National Provider Identifier (NPI) is 1134294549, issued on 11/21/2006.
Does Charles Holland, O.D. prescribe more brand-name or generic drugs? ▼
Charles Holland, O.D.'s prescribing is 22% brand-name and 78% generic drugs by claim count, with $20K in brand drug costs.
How many Corneal and Contact Management Optometrist providers are there in the US? ▼
There are 1,548 Corneal and Contact Management Optometrist providers across 52 states in the US. The average Corneal and Contact Management Optometrist provider writes 235 Medicare Part D claims per year.
What drugs does Charles Holland, O.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Charles Holland, O.D.'s most frequently prescribed drugs include Latanoprost, Dorzolamide-Timolol, Timolol Maleate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Charles Holland, O.D. accept Medicare? ▼
Charles Holland, O.D. appears in CMS Medicare data with 259 Part D claims and 61 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Charles Holland, O.D.'s credentials? ▼
Charles Holland, O.D.'s NPI is 1134294549 with credentials O.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.