NPI registry status
Active
2026 NPPES data Ophthalmology Physician NPI 1255838140 MD
Verify on CMS → Christina Chang, MD
Ophthalmology Physician in Lansdowne, Virginia.
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
409
Medicare Part D claims · 143 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
63%
generic claims · 37% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
73.2/100
▼ 10 pts below national avg 83.1 · Mid-tier
Industry payments
$216.17
6 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
Christina Chang, MD reported a CMS MIPS final score of 73.2/100 - below the 83.1 national average - and filed 409 Medicare Part D claims in 2023.
- 73.2/100
- MIPS score · -10 vs avg
- 409
- Part D claims, 2023
- 63%
- 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.
Christina 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
73 11th percentile higher than 11% 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 Christina 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, Christina Chang, MD writes more Part D claims than 21% of them and scores higher on MIPS quality than 11% - 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 ophthalmology physician peer from a representative sample of 60; the gold marker is Christina Chang, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Christina 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 Christina Chang, MD?
Below national averagePrimary specialty
Ophthalmology Physician
Medicare Part D claims
409 71% vs specialty avg
MIPS final score
73.2/100 9.9 pts vs avg
Specialty distribution in Virginia
How Ophthalmology Physician compares to other specialties among Virginia providers
Medicare quality performance, MIPS
Christina Chang, MD's 2023 MIPS final score plotted against the Ophthalmology Physician national average
- MIPS Final Score
- 73.2/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Ophthalmology Physician) - 73.2/100 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).
Christina Chang, MD appears in the CMS NPPES registry as an Ophthalmology Physician provider holding MD credentials at 19441 GOLF VISTA PLZ STE 320, Lansdowne, VA, 20176, with a listed phone of (703) 858-9800. NPI 1255838140 was issued on 04/09/2018.
Medicare Part D records for calendar year 2023 show 409 prescription claims written by this provider, covering 143 Medicare beneficiaries and totaling roughly $73K in drug spend, split 37% brand-name and 63% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 73.2/100 for the 2023 performance year (Quality 59, Cost 65.8), 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 | 1255838140 |
|---|---|
| Specialty | Ophthalmology Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 04/09/2018 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
73.1995
Final Score
Avg: 83.1
59.0075
Quality
65.824
Cost
83
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Christina 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.
Virginia Eye Center PC
Lansdowne, VA
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 Christina Chang, MD. Source: openpaymentsdata.cms.gov.
Total received
$216
Largest payer
Inspire Medical Systems, 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
Christina Chang, MD - brand share 37.0%
Ophthalmology Physician average
37% brand-name claims vs 63% generic, on 409 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.
409
Total Claims
$73K
Total Drug Cost
143
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 673
- Total Day Supply
- 18,843
- Brand vs Generic
- 37% brand / 63% generic
- Brand Drug Cost
- $66K
- Generic Drug Cost
- $7K
- Antibiotic Claims
- 15
Patient Demographics
- Average Patient Age
- 76.3 years
- Avg HCC Risk Score
- 0.94
- Gender Split
- 68% female / 32% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Christina Chang, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Latanoprost
Latanoprost
121 claims
- Timolol Maleate 38
Timolol Maleate
38 claims
- Xiidra 31
Xiidra
31 claims
- Restasis 28
Restasis
28 claims
- Brimonidine Tartrate 26
Brimonidine Tartrate
26 claims
- Erythromycin 23
Erythromycin
23 claims
- Prednisolone Acetate 21
Prednisolone Acetate
21 claims
- Neomycin-Polymyxin… 18
Neomycin-Polymyxin-Dexameth
18 claims
| Drug | Claims |
|---|---|
| Latanoprost | 121 |
| Timolol Maleate | 38 |
| Xiidra Lifitegrast | 31 |
| Restasis Cyclosporine | 28 |
| Brimonidine Tartrate | 26 |
| Erythromycin Erythromycin Base | 23 |
| Prednisolone Acetate | 21 |
| Neomycin-Polymyxin-Dexameth Neomycin/Polymyxin B/Dexametha | 18 |
| Dorzolamide-Timolol Dorzolamide Hcl/Timolol Maleat | 15 |
| Doxycycline Hyclate | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Ophthalmology Physician Overview
How Christina Chang, 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
Christina Chang, MD's 409 claims are below the specialty average of 1,420.
Nearby Ophthalmology Physician Providers in Virginia
Other clinicians with the same primary specialty enrolled in Virginia, drawn from the same CMS NPPES roster as Chang.
Dr. Benjamin Abramowitz
MD
Manassas, VA
Dr. Eric Adams
MD
Norfolk, VA
Dr. Rohit Adyanthaya
MD
Norfolk, VA
Dr. George Agritellis
M.D.
Winchester, VA
Dr. Sameer Ahmad
M.D.
Herndon, VA
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 Virginia 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 Christina Chang, MD's specialty? ▼
Christina Chang, MD specializes in Ophthalmology Physician and practices in Lansdowne, Virginia. Credentials: MD.
How much does Christina Chang, MD prescribe under Medicare Part D? ▼
In 2023, Christina Chang, MD wrote 409 Medicare Part D claims totaling $73K in drug costs for 143 beneficiaries.
What is Christina Chang, MD's Medicare quality score? ▼
Christina Chang, MD has a CMS MIPS Final Score of 73.2/100 (Quality: 59, Cost: 65.8). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Christina Chang, MD located? ▼
Christina Chang, MD is located at 19441 GOLF VISTA PLZ STE 320, Lansdowne, VA, 20176. Phone: (703) 858-9800.
What is Christina Chang, MD's NPI number? ▼
Christina Chang, MD's National Provider Identifier (NPI) is 1255838140, issued on 04/09/2018.
Does Christina Chang, MD prescribe more brand-name or generic drugs? ▼
Christina Chang, MD's prescribing is 37% brand-name and 63% generic drugs by claim count, with $66K in brand drug costs.
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 Christina Chang, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Christina Chang, MD's most frequently prescribed drugs include Latanoprost, Timolol Maleate, Xiidra. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Christina Chang, MD accept Medicare? ▼
Christina Chang, MD appears in CMS Medicare data with 409 Part D claims and 143 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Christina Chang, MD's credentials? ▼
Christina Chang, MD's NPI is 1255838140 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.