NPI registry status
Active
2026 NPPES data Ophthalmology Physician NPI 1790280402 MD
Verify on CMS → Sarah Chang, MD
Ophthalmology Physician in Greenbelt, Maryland.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 22,090 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
568
Medicare Part D claims · 153 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
70%
generic claims · 30% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
96.9/100
▲ 14 pts above national avg 83.1 · Exceptional
Industry payments
$849.54
37 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
Sarah Chang, MD reported a CMS MIPS final score of 96.9/100 - above the 83.1 national average - and filed 568 Medicare Part D claims in 2023.
- 96.9/100
- MIPS score · +14 vs avg
- 568
- Part D claims, 2023
- 70%
- 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.
Sarah Chang, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
97 Top 17% higher than 83% 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 Sarah Chang, 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, Sarah Chang, MD writes more Part D claims than 28% of them and scores higher on MIPS quality than 77% - placing this provider in the lower-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 Sarah Chang, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Sarah Chang, 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 Sarah Chang, MD?
High performer (top quartile)Primary specialty
Ophthalmology Physician
Medicare Part D claims
568 60% vs specialty avg
MIPS final score
96.9/100 13.8 pts vs avg
Specialty distribution in Maryland
How Ophthalmology Physician compares to other specialties among Maryland providers
Medicare quality performance, MIPS
Sarah Chang, MD's 2023 MIPS final score plotted against the Ophthalmology Physician national average
- MIPS Final Score
- 96.9/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Ophthalmology Physician) - 96.9/100 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).
Sarah Chang, MD appears in the CMS NPPES registry as a Ophthalmology Physician provider holding MD credentials at 7500 GREENWAY CENTER DR STE 300, Greenbelt, MD, 20770, with a listed phone of (301) 277-4844. NPI 1790280402 was issued on 03/26/2018.
Medicare Part D records for calendar year 2023 show 568 prescription claims written by this provider, covering 153 Medicare beneficiaries and totaling roughly $58K in drug spend, split 30% brand-name and 70% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 96.9/100 for the 2023 performance year (Quality 100, Cost 85.2), compared with the national average of 83.1.
Ophthalmology Physician is a mid-sized specialty nationwide, with 22,090 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 | 1790280402 |
|---|---|
| Specialty | Ophthalmology Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 03/26/2018 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
96.8562
Final Score
Avg: 83.1
100
Quality
85.1514
Cost
Reporting: Group practice
Hospital and facility affiliations
Facilities where Sarah Chang, 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.
Washington Eye Institute, LLC
Greenbelt, MD
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 Sarah Chang, MD. Source: openpaymentsdata.cms.gov.
Total received
$850
Largest payer
ABBVIE 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
Sarah Chang, MD - brand share 30.0%
Ophthalmology Physician average
30% brand-name claims vs 70% generic, on 568 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.
568
Total Claims
$58K
Total Drug Cost
153
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,028
- Total Day Supply
- 29,171
- Brand vs Generic
- 30% brand / 70% generic
- Brand Drug Cost
- $43K
- Generic Drug Cost
- $15K
Patient Demographics
- Average Patient Age
- 72.6 years
- Avg HCC Risk Score
- 1.29
- Gender Split
- 56% female / 44% male
- Age Distribution
- <65: 16, 65-74: 74, 75-84: 52, 85+: 11
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Sarah Chang, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Latanoprost
Latanoprost
144 claims
- Prednisolone Acetate
Prednisolone Acetate
83 claims
- Dorzolamide-Timolol 55
Dorzolamide-Timolol
55 claims
- Ketorolac Trometha… 53
Ketorolac Tromethamine
53 claims
- Brimonidine Tartrate 43
Brimonidine Tartrate
43 claims
- Ofloxacin 38
Ofloxacin
38 claims
- Timolol Maleate 24
Timolol Maleate
24 claims
- Dorzolamide Hcl 20
Dorzolamide Hcl
20 claims
| Drug | Claims |
|---|---|
| Latanoprost | 144 |
| Prednisolone Acetate | 83 |
| Dorzolamide-Timolol Dorzolamide Hcl/Timolol Maleat | 55 |
| Ketorolac Tromethamine | 53 |
| Brimonidine Tartrate | 43 |
| Ofloxacin | 38 |
| Timolol Maleate | 24 |
| Dorzolamide Hcl | 20 |
| Rhopressa Netarsudil Mesylate | 20 |
| Lumigan Bimatoprost | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Ophthalmology Physician Overview
How Sarah Chang, MD fits within the Ophthalmology Physician landscape nationally.
22,090
Ophthalmology Physician Providers in US
56
States with Ophthalmology Physician
1,420
Avg Claims per Provider
Sarah Chang, MD's 568 claims are below the specialty average of 1,420.
Nearby Ophthalmology Physician Providers in Maryland
Other clinicians with the same primary specialty enrolled in Maryland, drawn from the same CMS NPPES roster as Chang.
Dr. Abdulrahman Abodarahim
MBBCH
Baltimore, MD
Dr. Donald Abrams
M.D.
Baltimore, MD
Dr. Lisa Abrams
M.D.
Lutherville, MD
Dr. Neal Adams
MD
Silver Spring, MD
Dr. Arturo Aglubat
M.D.
Bel Air, MD
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 Maryland 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.
Healthcare Guides
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Medical Specialties Explained
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Understanding Medicare Claims Data
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Frequently Asked Questions
What is Sarah Chang, MD's specialty? ▼
Sarah Chang, MD specializes in Ophthalmology Physician and practices in Greenbelt, Maryland. Credentials: MD.
How much does Sarah Chang, MD prescribe under Medicare Part D? ▼
In 2023, Sarah Chang, MD wrote 568 Medicare Part D claims totaling $58K in drug costs for 153 beneficiaries.
What is Sarah Chang, MD's Medicare quality score? ▼
Sarah Chang, MD has a CMS MIPS Final Score of 96.9/100 (Quality: 100, Cost: 85.2). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Sarah Chang, MD located? ▼
Sarah Chang, MD is located at 7500 GREENWAY CENTER DR STE 300, Greenbelt, MD, 20770. Phone: (301) 277-4844.
What is Sarah Chang, MD's NPI number? ▼
Sarah Chang, MD's National Provider Identifier (NPI) is 1790280402, issued on 03/26/2018.
Does Sarah Chang, MD prescribe more brand-name or generic drugs? ▼
Sarah Chang, MD's prescribing is 30% brand-name and 70% generic drugs by claim count, with $43K in brand drug costs.
How many Ophthalmology Physician providers are there in the US? ▼
There are 22,090 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 Sarah Chang, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Sarah Chang, MD's most frequently prescribed drugs include Latanoprost, Prednisolone Acetate, Dorzolamide-Timolol. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Sarah Chang, MD accept Medicare? ▼
Sarah Chang, MD appears in CMS Medicare data with 568 Part D claims and 153 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Sarah Chang, MD's credentials? ▼
Sarah Chang, MD's NPI is 1790280402 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.