NPI registry status
Active
2026 NPPES data Ophthalmology Physician NPI 1063670644 MD
Verify on CMS → Byron Cook, MD
Ophthalmology Physician in Cumming, Georgia.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 22,082 in Ophthalmology Physician, 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
2K
Medicare Part D claims · 721 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
37%
generic claims · 63% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
91.9/100
▲ 9 pts above national avg 83.1 · Exceptional
Industry payments
$2.5K
58 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Byron Cook, MD reported a CMS MIPS final score of 91.9/100 - above the 83.1 national average - and filed 2,254 Medicare Part D claims in 2023.
- 91.9/100
- MIPS score · +9 vs avg
- 2K
- Part D claims, 2023
- 37%
- generic prescribing
- Likely
- board-certified (heuristic)
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.
Byron Cook, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
92 Top 37% higher than 63% of 477,587 scored providers
Each bar is a band; taller bars hold more scored 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.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Byron Cook, MD sits
This provider among ophthalmology physician peers
Across the 9,866 ophthalmology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Byron Cook, MD writes more Part D claims than 77% of them and scores higher on MIPS quality than 62% - 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 ophthalmology physician peer from a representative sample of 60; the gold marker is Byron Cook, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Byron Cook, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Byron Cook, MD?
High performer (top quartile)Primary specialty
Ophthalmology Physician
Medicare Part D claims
2,254 59% vs specialty avg
MIPS final score
91.9/100 8.8 pts vs avg
Specialty distribution in Georgia
How Ophthalmology Physician compares to other specialties among Georgia providers
Medicare quality performance, MIPS
Byron Cook, MD's 2023 MIPS final score plotted against the Ophthalmology Physician national average
- MIPS Final Score
- 91.9/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Ophthalmology Physician) - 91.9/100 vs national avg 83.1
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).
Byron Cook, MD appears in the CMS NPPES registry as an Ophthalmology Physician provider holding MD credentials at 1505 NORTHSIDE BLVD, Cumming, GA, 30041, with a listed phone of (678) 845-0466. NPI 1063670644 was issued on 05/30/2008.
Medicare Part D records for calendar year 2023 show 2,254 prescription claims written by this provider, covering 721 Medicare beneficiaries and totaling roughly $543K in drug spend, split 63% brand-name and 37% generic by claim count, with an opioid prescribing rate of 0.8%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 91.9/100 for the 2023 performance year (Quality 79.2, Cost 94.7), compared with the national average of 83.1.
Ophthalmology Physician is a mid-sized specialty nationwide, with 22,082 enrolled providers across 56 states and an average of 1,420 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 | 1063670644 |
|---|---|
| Specialty | Ophthalmology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/30/2008 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
91.9066
Final Score
Avg: 83.1
79.1694
Quality
94.686
Cost
99
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Byron Cook, MD 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.
Jonathan Woolfson MD PC
Atlanta, GA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
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 Byron Cook, MD. Source: openpaymentsdata.cms.gov.
Total received
$2.5K
Largest payer
Glaukos Corporation
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 · Brand-heavy
Byron Cook, MD - brand share 63.0%
Ophthalmology Physician average
63% brand-name claims vs 37% generic, on 2,254 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.
2,254
Total Claims
$543K
Total Drug Cost
721
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,823
- Total Day Supply
- 70,277
- Brand vs Generic
- 63% brand / 37% generic
- Brand Drug Cost
- $501K
- Generic Drug Cost
- $41K
- Opioid Claims
- 19 (0.8% rate)
Patient Demographics
- Average Patient Age
- 73.8 years
- Avg HCC Risk Score
- 1.03
- Gender Split
- 61% female / 39% male
- Age Distribution
- <65: 33, 65-74: 370, 75-84: 267, 85+: 51
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Byron Cook, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Prednisolone Acetate
Prednisolone Acetate
611 claims
- Moxifloxacin
Moxifloxacin
382 claims
- Besivance 231
Besivance
231 claims
- Prolensa 164
Prolensa
164 claims
- Restasis 89
Restasis
89 claims
- Valacyclovir 81
Valacyclovir
81 claims
- Lotemax Sm 64
Lotemax Sm
64 claims
- Latanoprost 58
Latanoprost
58 claims
| Drug | Claims |
|---|---|
| Prednisolone Acetate | 611 |
| Moxifloxacin Moxifloxacin Hcl | 382 |
| Besivance Besifloxacin Hcl | 231 |
| Prolensa Bromfenac Sodium | 164 |
| Restasis Cyclosporine | 89 |
| Valacyclovir Valacyclovir Hcl | 81 |
| Lotemax Sm Loteprednol Etabonate | 64 |
| Latanoprost | 58 |
| Doxycycline Hyclate | 53 |
| Cyclosporine | 40 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Ophthalmology Physician Overview
How Byron Cook, MD fits within the Ophthalmology Physician landscape nationally.
22,082
Ophthalmology Physician Providers in US
56
States with Ophthalmology Physician
1,420
Avg Claims per Provider
Byron Cook, MD's 2,254 claims are above the specialty average of 1,420.
Nearby Ophthalmology Physician Providers in Georgia
Other clinicians with the same primary specialty enrolled in Georgia, drawn from the same CMS NPPES roster as Cook.
Dr. Thomas Aaberg
MD
Atlanta, GA
Dr. Maria Aaron
MD
Atlanta, GA
Dr. Monica Abernot
MD
Hinesville, GA
Dr. Osemelu Aburime
MD
Leesburg, GA
Dr. William Ackerman
M.D.
Gainesville, GA
Compare Ophthalmology Physician 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 Georgia medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Ophthalmology Physician 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 Byron Cook, MD's specialty? ▼
Byron Cook, MD specializes in Ophthalmology Physician and practices in Cumming, Georgia. Credentials: MD.
How much does Byron Cook, MD prescribe under Medicare Part D? ▼
In 2023, Byron Cook, MD wrote 2,254 Medicare Part D claims totaling $543K in drug costs for 721 beneficiaries.
What is Byron Cook, MD's Medicare quality score? ▼
Byron Cook, MD has a CMS MIPS Final Score of 91.9/100 (Quality: 79.2, Cost: 94.7). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Byron Cook, MD located? ▼
Byron Cook, MD is located at 1505 NORTHSIDE BLVD, Cumming, GA, 30041. Phone: (678) 845-0466.
What is Byron Cook, MD's NPI number? ▼
Byron Cook, MD's National Provider Identifier (NPI) is 1063670644, issued on 05/30/2008.
Does Byron Cook, MD prescribe more brand-name or generic drugs? ▼
Byron Cook, MD's prescribing is 63% brand-name and 37% generic drugs by claim count, with $501K in brand drug costs.
Does Byron Cook, MD prescribe opioids? ▼
Yes, Byron Cook, MD had 19 opioid claims in 2023 with an opioid prescribing rate of 0.8%.
How many Ophthalmology Physician providers are there in the US? ▼
There are 22,082 Ophthalmology Physician providers across 56 states in the US. The average Ophthalmology Physician provider writes 1,420 Medicare Part D claims per year.
What drugs does Byron Cook, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Byron Cook, MD's most frequently prescribed drugs include Prednisolone Acetate, Moxifloxacin, Besivance. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Byron Cook, MD accept Medicare? ▼
Byron Cook, MD appears in CMS Medicare data with 2,254 Part D claims and 721 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Byron Cook, MD's credentials? ▼
Byron Cook, MD's NPI is 1063670644 with credentials MD. 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
Compiled from official public sources by the PlainDoctor editorial team.
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.