NPI registry status
Active
2026 NPPES data Corneal and Contact Management Optometrist NPI 1639128861 OD
Verify on CMS → Michael Hattan, OD
Corneal and Contact Management Optometrist in Hays, 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
396
Medicare Part D claims · 93 beneficiaries · Corneal and Contact Management Optometrist avg: 235
Generic prescribing
72%
generic claims · 28% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
99.8/100
▲ 16 pts above national avg 83.5 · Exceptional
Industry payments
$100.04
4 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Michael Hattan, OD reported a CMS MIPS final score of 99.8/100 - above the 83.5 national average - and filed 396 Medicare Part D claims in 2023.
- 99.8/100
- MIPS score · +16 vs avg
- 396
- Part D claims, 2023
- 72%
- generic prescribing
- $100.04
- industry payments (Sunshine Act)
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.
Michael Hattan, OD's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
100 ≥ 91st percentile 91% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured providers. 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.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Michael Hattan, OD sits
This provider among corneal and contact management optometrist peers
Across the 144 corneal and contact management optometrist providers who report both Medicare Part D prescribing and a MIPS quality score, Michael Hattan, OD writes more Part D claims than 53% of them and scores higher on MIPS quality than 92% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one corneal and contact management optometrist peer from a representative sample of 60; the gold marker is Michael Hattan, OD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Michael Hattan, OD?
High performer (top quartile)Primary specialty
Corneal and Contact Management Optometrist
Medicare Part D claims
396 69% vs specialty avg
MIPS final score
99.8/100 16.3 pts vs avg
Specialty distribution in Kansas
How Corneal and Contact Management Optometrist compares to other specialties among Kansas providers
Medicare quality performance, MIPS
Michael Hattan, OD's 2023 MIPS final score plotted against the Corneal and Contact Management Optometrist national average
- MIPS Final Score
- 99.8/100
- vs 83.5 national avg · 2023 performance year
MIPS final score (Corneal and Contact Management Optometrist) - 99.8/100 vs national avg 83.5
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).
Michael Hattan, OD appears in the CMS NPPES registry as a Corneal and Contact Management Optometrist provider holding OD credentials at 1517 E 27TH ST, Hays, KS, 67601, with a listed phone of (785) 625-2226. NPI 1639128861 was issued on 05/06/2006.
Medicare Part D records for calendar year 2023 show 396 prescription claims written by this provider, covering 93 Medicare beneficiaries and totaling roughly $36K in drug spend, split 28% brand-name and 72% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 99.8/100 for the 2023 performance year (Quality 99.6), compared with the 83.5 average among clinicians with a measured score.
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 | 1639128861 |
|---|---|
| Specialty | Corneal and Contact Management Optometrist |
| Credentials | OD |
| Gender | Male |
| NPI Issued | 05/06/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
99.8129
Final Score
Measured-score avg: 83.5
99.6258
Quality
Reporting: Individual
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Michael Hattan, OD. Source: openpaymentsdata.cms.gov.
Total received
$100
Largest payer
CooperVision Inc.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Brand vs generic prescribing mix · Above average
Michael Hattan, OD - brand share 28.0%
Corneal and Contact Management Optometrist average
28% brand-name claims vs 72% generic, on 396 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.
396
Total Claims
$36K
Total Drug Cost
93
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 600
- Total Day Supply
- 16,472
- Brand vs Generic
- 28% brand / 72% generic
- Brand Drug Cost
- $32K
- Generic Drug Cost
- $4K
- Antibiotic Claims
- 14
Patient Demographics
- Average Patient Age
- 77.3 years
- Avg HCC Risk Score
- 1.14
- Gender Split
- 66% female / 34% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Michael Hattan, OD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Latanoprost
Latanoprost
207 claims
- Timolol Maleate
Timolol Maleate
85 claims
- Lumigan 18
Lumigan
18 claims
- Neomycin-Polymyxin… 18
Neomycin-Polymyxin-Dexameth
18 claims
- Restasis 12
Restasis
12 claims
- Amoxicillin-Clavul… 11
Amoxicillin-Clavulanate Potass
11 claims
| Drug | Claims |
|---|---|
| Latanoprost | 207 |
| Timolol Maleate | 85 |
| Lumigan Bimatoprost | 18 |
| Neomycin-Polymyxin-Dexameth Neomycin/Polymyxin B/Dexametha | 18 |
| Restasis Cyclosporine | 12 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 11 |
* 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 Michael Hattan, OD 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
Michael Hattan, OD's 396 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 Hattan.
Dr. Andrea Beatty
O.D.
Shawnee, KS
Dr. Raymond Brill
OD, FAAO, FOAA
Mission, KS
Dr. Jay Burlingame
O.D.
Overland Park, KS
Dr. Amy Havens Lower
O.D.
Hiawatha, KS
Dr. Charles Holland
O.D.
Oskaloosa, 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 Michael Hattan, OD's specialty? ▼
Michael Hattan, OD specializes in Corneal and Contact Management Optometrist and practices in Hays, Kansas. Credentials: OD.
How much does Michael Hattan, OD prescribe under Medicare Part D? ▼
In 2023, Michael Hattan, OD wrote 396 Medicare Part D claims totaling $36K in drug costs for 93 beneficiaries.
What is Michael Hattan, OD's Medicare quality score? ▼
Michael Hattan, OD has a CMS MIPS Final Score of 99.8/100 (Quality: 99.6). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Michael Hattan, OD located? ▼
Michael Hattan, OD is located at 1517 E 27TH ST, Hays, KS, 67601. Phone: (785) 625-2226.
What is Michael Hattan, OD's NPI number? ▼
Michael Hattan, OD's National Provider Identifier (NPI) is 1639128861, issued on 05/06/2006.
Does Michael Hattan, OD prescribe more brand-name or generic drugs? ▼
Michael Hattan, OD's prescribing is 28% brand-name and 72% generic drugs by claim count, with $32K 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 Michael Hattan, OD prescribe most often? ▼
Based on 2023 Medicare Part D data, Michael Hattan, OD's most frequently prescribed drugs include Latanoprost, Timolol Maleate, Lumigan. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Michael Hattan, OD accept Medicare? ▼
Michael Hattan, OD appears in CMS Medicare data with 396 Part D claims and 93 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Michael Hattan, OD's credentials? ▼
Michael Hattan, OD's NPI is 1639128861 with credentials OD. 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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.