NPI registry status
Active
2026 NPPES data Glaucoma Specialist (Ophthalmology) Physician NPI 1154398782 MD
Verify on CMS → Marguerite Billbrough, MD
Glaucoma Specialist (Ophthalmology) Physician in Media, Pennsylvania.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 356 in Glaucoma 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
1K
Medicare Part D claims · 376 beneficiaries · Glaucoma Specialist (Ophthalmology) Physician avg: 3K
Generic prescribing
36%
generic claims · 64% 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
$174.66
8 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Marguerite Billbrough, MD reported a CMS MIPS final score of 73.2/100 - below the 83.1 national average - and filed 1,266 Medicare Part D claims in 2023.
- 73.2/100
- MIPS score · -10 vs avg
- 1K
- Part D claims, 2023
- 36%
- 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.
Marguerite Billbrough, 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 Marguerite Billbrough, MD sits
This provider among glaucoma specialist (ophthalmology) physician peers
Across the 216 glaucoma specialist (ophthalmology) physician providers who report both Medicare Part D prescribing and a MIPS quality score, Marguerite Billbrough, MD writes more Part D claims than 19% of them and scores higher on MIPS quality than 5% - 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 glaucoma specialist (ophthalmology) physician peer from a representative sample of 60; the gold marker is Marguerite Billbrough, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Marguerite Billbrough, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Marguerite Billbrough, MD?
Below national averagePrimary specialty
Glaucoma Specialist (Ophthalmology) Physician
Medicare Part D claims
1,266 57% vs specialty avg
MIPS final score
73.2/100 9.9 pts vs avg
Specialty distribution in Pennsylvania
How Glaucoma Specialist (Ophthalmology) Physician compares to other specialties among Pennsylvania providers
Medicare quality performance, MIPS
Marguerite Billbrough, MD's 2023 MIPS final score plotted against the Glaucoma Specialist (Ophthalmology) Physician national average
- MIPS Final Score
- 73.2/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Glaucoma Specialist (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).
Marguerite Billbrough, MD appears in the CMS NPPES registry as a Glaucoma Specialist (Ophthalmology) Physician provider holding MD credentials at 1098 W BALTIMORE PIKE STE 3301, Media, PA, 19063, with a listed phone of (610) 522-2822. NPI 1154398782 was issued on 03/02/2006.
Medicare Part D records for calendar year 2023 show 1,266 prescription claims written by this provider, covering 376 Medicare beneficiaries and totaling roughly $748K in drug spend, split 64% brand-name and 36% 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 96.4, Cost 32.7), compared with the national average of 83.1.
Glaucoma Specialist (Ophthalmology) Physician is a narrow specialty nationwide, with 356 enrolled providers across 42 states and an average of 2,962 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 | 1154398782 |
|---|---|
| Specialty | Glaucoma Specialist (Ophthalmology) Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 03/02/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
73.2255
Final Score
Avg: 83.1
96.369
Quality
32.716
Cost
78
Promoting Interoperability
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 Marguerite Billbrough, MD. Source: openpaymentsdata.cms.gov.
Total received
$175
Largest payer
SUN PHARMACEUTICAL INDUSTRIES 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.
License & disciplinary context - Pennsylvania PA-BOM 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~45K Pennsylvania medical licensees in 2023 - they are NOT specific to Marguerite Billbrough, MD. To verify Marguerite Billbrough, MD's current license status, search the PA-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
133
Total board actions, Pennsylvania 2023
Across 129 cases
2.96
Actions per 1,000 licensees
Pennsylvania statewide rate
probation
Most common action type
48 cases
PA-BOM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Pennsylvania disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Brand-heavy
Marguerite Billbrough, MD - brand share 64.0%
Glaucoma Specialist (Ophthalmology) Physician average
64% brand-name claims vs 36% generic, on 1,266 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.
1,266
Total Claims
$748K
Total Drug Cost
376
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,291
- Total Day Supply
- 64,777
- Brand vs Generic
- 64% brand / 36% generic
- Brand Drug Cost
- $721K
- Generic Drug Cost
- $26K
Patient Demographics
- Average Patient Age
- 77.5 years
- Avg HCC Risk Score
- 1.16
- Gender Split
- 69% female / 31% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Marguerite Billbrough, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Restasis
Restasis
311 claims
- Prednisolone Acetate
Prednisolone Acetate
131 claims
- Latanoprost
Latanoprost
127 claims
- Ofloxacin 89
Ofloxacin
89 claims
- Timolol Maleate 78
Timolol Maleate
78 claims
- Xiidra 77
Xiidra
77 claims
- Cyclosporine 66
Cyclosporine
66 claims
- Dorzolamide-Timolol 59
Dorzolamide-Timolol
59 claims
| Drug | Claims |
|---|---|
| Restasis Cyclosporine | 311 |
| Prednisolone Acetate | 131 |
| Latanoprost | 127 |
| Ofloxacin | 89 |
| Timolol Maleate | 78 |
| Xiidra Lifitegrast | 77 |
| Cyclosporine | 66 |
| Dorzolamide-Timolol Dorzolamide Hcl/Timolol Maleat | 59 |
| Flurbiprofen Sodium | 27 |
| Prolensa Bromfenac Sodium | 27 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Glaucoma Specialist (Ophthalmology) Physician in PA →
All providers in Pennsylvania →
Compare specialties →
Glaucoma Specialist (Ophthalmology) Physician Overview
How Marguerite Billbrough, MD fits within the Glaucoma Specialist (Ophthalmology) Physician landscape nationally.
356
Glaucoma Specialist (Ophthalmology) Physician Providers in US
42
States with Glaucoma Specialist (Ophthalmology) Physician
2,962
Avg Claims per Provider
Marguerite Billbrough, MD's 1,266 claims are below the specialty average of 2,962.
Nearby Glaucoma Specialist (Ophthalmology) Physician Providers in Pennsylvania
Other clinicians with the same primary specialty enrolled in Pennsylvania, drawn from the same CMS NPPES roster as Billbrough.
Dr. Victoria Addis
M.D.
Philadelphia, PA
Dilru Amarasekera
Philadelphia, PA
Dr. Cristan Arena
M.D.
West Chester, PA
Dr. Qi Cui
M.D., PH.D.
Philadelphia, PA
Dr. Jason Flamendorf
M.D.
Philadelphia, PA
Compare Glaucoma 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 Pennsylvania medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Glaucoma 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.
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Frequently Asked Questions
What is Marguerite Billbrough, MD's specialty? ▼
Marguerite Billbrough, MD specializes in Glaucoma Specialist (Ophthalmology) Physician and practices in Media, Pennsylvania. Credentials: MD.
How much does Marguerite Billbrough, MD prescribe under Medicare Part D? ▼
In 2023, Marguerite Billbrough, MD wrote 1,266 Medicare Part D claims totaling $748K in drug costs for 376 beneficiaries.
What is Marguerite Billbrough, MD's Medicare quality score? ▼
Marguerite Billbrough, MD has a CMS MIPS Final Score of 73.2/100 (Quality: 96.4, Cost: 32.7). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Marguerite Billbrough, MD located? ▼
Marguerite Billbrough, MD is located at 1098 W BALTIMORE PIKE STE 3301, Media, PA, 19063. Phone: (610) 522-2822.
What is Marguerite Billbrough, MD's NPI number? ▼
Marguerite Billbrough, MD's National Provider Identifier (NPI) is 1154398782, issued on 03/02/2006.
Does Marguerite Billbrough, MD prescribe more brand-name or generic drugs? ▼
Marguerite Billbrough, MD's prescribing is 64% brand-name and 36% generic drugs by claim count, with $721K in brand drug costs.
How many Glaucoma Specialist (Ophthalmology) Physician providers are there in the US? ▼
There are 356 Glaucoma Specialist (Ophthalmology) Physician providers across 42 states in the US. The average Glaucoma Specialist (Ophthalmology) Physician provider writes 2,962 Medicare Part D claims per year.
What drugs does Marguerite Billbrough, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Marguerite Billbrough, MD's most frequently prescribed drugs include Restasis, Prednisolone Acetate, Latanoprost. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Marguerite Billbrough, MD accept Medicare? ▼
Marguerite Billbrough, MD appears in CMS Medicare data with 1,266 Part D claims and 376 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Marguerite Billbrough, MD's credentials? ▼
Marguerite Billbrough, MD's NPI is 1154398782 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.