Medicare Enrolled

Dr. Hanna Shammas, M.D.

Ophthalmology · Lynwood, CA
Practice pattern: Mixed Practice — Diverse clinical practice across multiple procedure types
Consulting-driven
3510 MARTIN LUTHER KING JR BLVD, Lynwood, CA 90262
3106389391
In practice since 2006 (19 years)
NPI: 1770698854 verify on NPPES ↗
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating. This page presents federal public records about Dr. Shammas from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Shammas

Dr. Hanna Shammas is an ophthalmology specialist in Lynwood, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Shammas performed 698 Medicare services across 538 unique beneficiaries.

Between the years covered by Open Payments, Dr. Shammas received a total of $155,132 from 24 pharmaceutical and/or device companies across 133 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in ophthalmology. The majority of payments are for consulting, which typically reflects recognized clinical expertise sought by manufacturers. Patients may wish to discuss these relationships with their provider.

The Data Coverage level for Dr. Shammas is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.

✓ 19 years in practice ▲ 698 Medicare services $155,132 industry payments

Medicare Practice Summary

Medicare Utilization ↗
698
Medicare services
Bottom 27% in CA for ophthalmology
Lower Medicare volume may reflect subspecialty focus, hospital-based work, or a higher share of non-Medicare patients.
538
Unique beneficiaries
$66
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~37 Medicare services per year of practice

Top procedures by volume

Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.

Procedure Volume Avg. paid Avg. submitted
Retinal photography (fundus photo)
This procedure involves taking photographs of the retina, the light-sensitive tissue at the back of the eye. It is used to document the condition of the eye's interior structures.
 272 $28 $150
Comprehensive eye exam, established patient
A comprehensive examination of the visual system performed for a patient who has previously been seen by the provider.
 258 $90 $175
Office visit, established patient (20-29 min)
An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition.
 49 $65 $90
New patient office visit (45-59 min)
An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter.
 43 $119 $200
Optic nerve imaging (OCT scan)
Imaging of the optic nerve.
 31 $25 $150
Retinal imaging (OCT scan)
This procedure involves imaging the retina to visualize its structure. It is used to examine the back of the eye.
 25 $33 $150
Laser removal of recurring cataract
A laser procedure to remove a recurring cataract within the lens capsule.
 20 $249 $1,000
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. A higher procedure volume generally indicates more experience with that procedure.

Industry Payment Transparency

Open Payments through 2024 ↗
$155,132
Total received (2018-2024)
Avg $22,162/year across 7 years
Top 3% in CA for ophthalmology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
24
Companies
133
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →

Payment profile

Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.

Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$96,089 (61.9%)
Financial / Ownership
Ownership or investment interests, royalties, and licensing fees
$45,600 (29.4%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$11,716 (7.6%)
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$1,727 (1.1%)

Payment trend by year

Annual totals from pharmaceutical and medical device companies.

2024
$7,916
2023
$22,166
2022
$51,893
2021
$31,529
2020
$16,629
2019
$7,965
2018
$17,035

Payments by company (2024)

Consulting
Speaking
Meals & Travel
Research
TOPCON CORPORATION
$3,780
Haag-Streit USA, Inc.
$3,390
Alcon Vision LLC
$248
Amgen Inc.
$206
Carl Zeiss Meditec USA, Inc.
$168
Tarsus Pharmaceuticals, Inc.
$125
Top 3 companies account for 93.7% of 2024 payments
All-time payments by company (2018-2024) ›
Alcon Vision LLC
$74,617
Alcon Research LLC
$22,436
NIDEK CO., LTD.
$20,000
Reliance Medical Products, Inc.
$13,120
Haag-Streit USA, Inc.
$10,120
TOPCON CORPORATION
$9,260
RELIANCE MEDICAL PRODUCTS, INC.
$3,100
OCULUS, Inc.
$1,000
Alcon Laboratories Inc
$227
Amgen Inc.
$206
Carl Zeiss Meditec USA, Inc.
$168
AbbVie Inc.
$137
Bausch & Lomb, a division of Bausch Health US, LLC
$131
Tarsus Pharmaceuticals, Inc.
$125
Sun Pharmaceutical Industries Inc.
$89
Allergan, Inc.
$78
Allergan Inc.
$60
Novartis Pharmaceuticals Corporation
$57
Sight Sciences, Inc.
$49
Johnson & Johnson Surgical Vision, Inc.
$47
SUN PHARMACEUTICAL INDUSTRIES INC.
$44
Horizon Therapeutics plc
$30
Glaukos Corporation
$18
Eyevance Pharmaceuticals LLC
$15
Top 3 companies account for 75.5% of all-time payments
Associated products mentioned in payments ›
ARGOS · AcrySof IQ PanOptix · AcrySof IQ VIVITY IOL · BromSite (bromfenac ophthalmic solution) 0.075% · Capella Aberrometer · Capella Topographer · Cequa · Clareon · DUREZOL · DURYSTA · LUMIGAN · LenSx · Luxor · OMNI(R) SURGICAL SYSTEM (US) · OPTICAL BIOMETER · ORA · ORA System VerifEye · PanOptix · Pentacam · QUATERA 700 · RESTASIS · RESTASIS MULTIDOSE · ReSTOR · Rocklatan · STELLARIS PC · TEPEZZA · Tecnis IOL · Tecnis Multifocal Family of 1-piece IOLS · XIIDRA · Zerviate · iSTENT iNJECT TRABECULAR MICRO-BYPASS STENT SYSTEM
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →

The majority of payments (62%) are consulting fees, which typically reflect recognized clinical expertise sought by manufacturers. Total industry engagement is in the top 3% for ophthalmology in CA.

Looking for an ophthalmology specialist in Lynwood?
Compare ophthalmologists in the Lynwood area by procedure volume, costs, and industry payment transparency.
Browse ophthalmologists nearby

Geographic Context

Ophthalmologists within 10 mi
879
Per 100K population
8.9
County median income
$87,760
Nearest hospital
SAINT FRANCIS MEDICAL CENTER
0.0 mi

Data Sources

Provider Registry ✓ NPPES Weekly updates
Medicare Enrollment ✓ PECOS Monthly updates
Practice Data ✓ Medicare Util. Annual (CY lag)
Industry Payments ✓ Open Payments CY 2024
Disciplinary History — Not public N/A

This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →

Summary

Dr. Shammas is a mixed practice specialist, with moderate Medicare volume, with consulting-driven industry engagement in the top 3% of CA peers, with 19 years of NPI registration.

This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →

Frequently Asked Questions

Is Dr. Shammas experienced with retinal photography (fundus photo)?
Based on Medicare claims data, Dr. Shammas performed 272 retinal photography (fundus photo) services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Shammas receive payments from pharmaceutical companies?
Yes. Dr. Shammas received a total of $155,132 from 24 companies across 133 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Shammas's costs compare to other ophthalmologists in Lynwood?
Dr. Shammas's average Medicare payment per service is $66. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Shammas) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating a long track record of practice, Medicare participation, and industry disclosure. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →

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About this page

All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.

This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.

Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology

Data Disclaimer — Data sourced from the Centers for Medicare & Medicaid Services (CMS): National Plan and Provider Enumeration System (NPPES), Open Payments program, Medicare Provider Utilization and Payment Data, and Provider Enrollment & Certification data (PECOS). Published under the Freedom of Information Act (FOIA). This website is not affiliated with, endorsed by, or authorized by CMS, HHS, or the U.S. Government. Data may contain errors as reported to CMS by providers and reporting entities. Payments from industry are legal and do not indicate wrongdoing. Medicare data reflects only patients aged 65+ or those with qualifying disabilities. For corrections, contact CMS directly. This information does not constitute medical advice and should not be used as the sole basis for choosing a healthcare provider. Procedure descriptions use plain language and do not reference CPT® codes, which are copyrighted by the American Medical Association. Full methodology → · Report a data error → · Privacy policy →