NPI registry status
Active
2026 NPPES data Retina Specialist (Ophthalmology) Physician NPI 1700313368 MD
Verify on CMS → William Gange, MD
Retina Specialist (Ophthalmology) Physician in Fort Collins, Colorado.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 917 in Retina Specialist (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
273
Medicare Part D claims · 125 beneficiaries · Retina Specialist (Ophthalmology) Physician avg: 558
Generic prescribing
53%
generic claims · 47% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
79.7/100
▼ 4 pts below national avg 83.5 · Above neutral
Industry payments
$714.16
20 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
William Gange, MD reported a CMS MIPS final score of 79.7/100 - below the 83.5 national average - and filed 273 Medicare Part D claims in 2023.
- 79.7/100
- MIPS score · -4 vs avg
- 273
- Part D claims, 2023
- 53%
- 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.
William Gange, MD'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.
80 ≥ 26th percentile 26% 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 William Gange, MD sits
This provider among retina specialist (ophthalmology) physician peers
Across the 548 retina specialist (ophthalmology) physician providers who report both Medicare Part D prescribing and a MIPS quality score, William Gange, MD writes more Part D claims than 30% of them and scores higher on MIPS quality than 15% - placing this provider in the lower-volume, lower-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 retina specialist (ophthalmology) physician peer from a representative sample of 60; the gold marker is William Gange, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
William Gange, 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 William Gange, MD?
Near national averagePrimary specialty
Retina Specialist (Ophthalmology) Physician
Medicare Part D claims
273 51% vs specialty avg
MIPS final score
79.7/100 3.8 pts vs avg
Specialty distribution in Colorado
How Retina Specialist (Ophthalmology) Physician compares to other specialties among Colorado providers
Medicare quality performance, MIPS
William Gange, MD's 2023 MIPS final score plotted against the Retina Specialist (Ophthalmology) Physician national average
- MIPS Final Score
- 79.7/100
- vs 83.5 national avg · 2023 performance year
MIPS final score (Retina Specialist (Ophthalmology) Physician) - 79.7/100 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).
William Gange, MD appears in the CMS NPPES registry as a Retina Specialist (Ophthalmology) Physician provider holding MD credentials at 3151 PRECISION DR, Fort Collins, CO, 80528, with a listed phone of (970) 221-2222. NPI 1700313368 was issued on 05/15/2017.
Medicare Part D records for calendar year 2023 show 273 prescription claims written by this provider, covering 125 Medicare beneficiaries and totaling roughly $15K in drug spend, split 47% brand-name and 53% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 79.7/100 for the 2023 performance year (Quality 99.7, Cost 40.3), compared with the 83.5 average among clinicians with a measured score.
Retina Specialist (Ophthalmology) Physician is a narrow specialty nationwide, with 917 enrolled providers across 48 states and an average of 558 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 | 1700313368 |
|---|---|
| Specialty | Retina Specialist (Ophthalmology) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/15/2017 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
79.7403
Final Score
Measured-score avg: 83.5
99.7117
Quality
40.256
Cost
91
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where William Gange, 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.
Eye Center OF Northern Colorado PC
Fort Collins, CO
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 William Gange, MD. Source: openpaymentsdata.cms.gov.
Total received
$714
Largest payer
Regeneron Healthcare Solutions, 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
William Gange, MD - brand share 47.0%
Retina Specialist (Ophthalmology) Physician average
47% brand-name claims vs 53% generic, on 273 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.
273
Total Claims
$15K
Total Drug Cost
125
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 339
- Total Day Supply
- 7,758
- Brand vs Generic
- 47% brand / 53% generic
- Brand Drug Cost
- $10K
- Generic Drug Cost
- $5K
Patient Demographics
- Average Patient Age
- 71.5 years
- Avg HCC Risk Score
- 1.93
- Gender Split
- 58% female / 42% male
- Age Distribution
- <65: 18, 65-74: 54, 75-84: 38, 85+: 15
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What William Gange, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Prednisolone Acetate
Prednisolone Acetate
92 claims
- Moxifloxacin
Moxifloxacin
81 claims
- Ketorolac Trometha… 16
Ketorolac Tromethamine
16 claims
- Latanoprost 13
Latanoprost
13 claims
- Dorzolamide-Timolol 12
Dorzolamide-Timolol
12 claims
| Drug | Claims |
|---|---|
| Prednisolone Acetate | 92 |
| Moxifloxacin Moxifloxacin Hcl | 81 |
| Ketorolac Tromethamine | 16 |
| Latanoprost | 13 |
| Dorzolamide-Timolol Dorzolamide Hcl/Timolol Maleat | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Retina Specialist (Ophthalmology) Physician in CO →
All providers in Colorado →
Compare specialties →
Retina Specialist (Ophthalmology) Physician Overview
How William Gange, MD fits within the Retina Specialist (Ophthalmology) Physician landscape nationally.
917
Retina Specialist (Ophthalmology) Physician Providers in US
48
States with Retina Specialist (Ophthalmology) Physician
558
Avg Claims per Provider
William Gange, MD's 273 claims are below the specialty average of 558.
Nearby Retina Specialist (Ophthalmology) Physician Providers in Colorado
Other clinicians with the same primary specialty enrolled in Colorado, drawn from the same CMS NPPES roster as Gange.
Dr. Matthew Asano
M.D.
Fort Collins, CO
Dr. Hongan Chen
MD
Aurora, CO
Dr. Rachel Chen
M.D.
Aurora, CO
Dr. Mark Chittum
M.D.
Colorado Springs, CO
Dr. Ross Chod
M.D.
Aurora, CO
Compare Retina Specialist (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 Colorado medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Retina Specialist (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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Colorado
Frequently Asked Questions
What is William Gange, MD's specialty? ▼
William Gange, MD specializes in Retina Specialist (Ophthalmology) Physician and practices in Fort Collins, Colorado. Credentials: MD.
How much does William Gange, MD prescribe under Medicare Part D? ▼
In 2023, William Gange, MD wrote 273 Medicare Part D claims totaling $15K in drug costs for 125 beneficiaries.
What is William Gange, MD's Medicare quality score? ▼
William Gange, MD has a CMS MIPS Final Score of 79.7/100 (Quality: 99.7, Cost: 40.3). 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 William Gange, MD located? ▼
William Gange, MD is located at 3151 PRECISION DR, Fort Collins, CO, 80528. Phone: (970) 221-2222.
What is William Gange, MD's NPI number? ▼
William Gange, MD's National Provider Identifier (NPI) is 1700313368, issued on 05/15/2017.
Does William Gange, MD prescribe more brand-name or generic drugs? ▼
William Gange, MD's prescribing is 47% brand-name and 53% generic drugs by claim count, with $10K in brand drug costs.
How many Retina Specialist (Ophthalmology) Physician providers are there in the US? ▼
There are 917 Retina Specialist (Ophthalmology) Physician providers across 48 states in the US. The average Retina Specialist (Ophthalmology) Physician provider writes 558 Medicare Part D claims per year.
What drugs does William Gange, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, William Gange, MD's most frequently prescribed drugs include Prednisolone Acetate, Moxifloxacin, Ketorolac Tromethamine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does William Gange, MD accept Medicare? ▼
William Gange, MD appears in CMS Medicare data with 273 Part D claims and 125 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify William Gange, MD's credentials? ▼
William Gange, MD's NPI is 1700313368 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
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.