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DR. MARILU O'BYRNE M.D.
NPI 1083772453
Ophthalmology in Mandeville, LA

Active since December 05, 2006PECOS EnrolledAccepts Medicare Assignment
99.81/100
CMS Quality Rating
1580 W CAUSEWAY APPROACH, SUITE 3, MANDEVILLE, LA 70471(985) 624-5573(985) 624-9106 Get Directions Write a Review

NPPES record last updated: May 29, 2008. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Marilu O'byrne M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MARILU O'BYRNE M.D. (NPI 1083772453) is an individual ophthalmology provider in Mandeville, Louisiana, licensed in Louisiana (016256) and active in the NPI registry since December 2006. She is enrolled in Medicare PECOS, is affiliated with Sterling Surgical Hospital, and is a graduate of Louisiana State University School Of Medicine In New Orleans (1981).

NPPES Registry Identity

NPI1083772453
Entity TypeIndividualFemale
Primary Taxonomy207W00000X
Provider Legal NameDR. MARILU O'BYRNECredential: M.D.
Location Address1580 W CAUSEWAY APPROACH, SUITE 3Mandeville, LA 70471-3033
Mailing Address1580 W Causeway Approach, Suite 3Mandeville, LA 70471-3033 · (985) 624-5573 · Fax (985) 624-9106
Phone(985) 624-5573
Fax(985) 624-9106
Sole ProprietorYes
Medical School CMSLouisiana State University School Of Medicine In New OrleansGraduated 1981
Enumeration DateDecember 5, 2006
Last NPPES UpdateMay 29, 2008
✔ NPI 1083772453 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians
Taxonomy Code207W00000X
License✔ Licensed in LA · 016256
Definition
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.
1580 W CAUSEWAY APPROACH, Mandeville, LA 70471
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Other Identifiers 3

Medicaid1318850LA
Medicare UPINB62268LA
Medicare PIN502476690LA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Marilu O'byrne M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6305863705
PECOS Enrollment IDI20060104000764
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show Marilu O'byrne reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Obyrne Eye Clinic, L.L.C.
Same address
Specialist
1580 W CAUSEWAY APPROACH, SUITE 3
Mandeville, LA 70471
  • Reassigned Medicare billing, Louisiana enrollment
  • Medicare enrollment name: Obyrne Eye Clinic LLC
  • 3 clinicians in this Medicare group
NPI 1649471335 (985) 624-5573
Germer Haley LLC
27 mi
Ophthalmology
409 AVENUE F
Bogalusa, LA 70427
  • Reassigned Medicare billing, Louisiana enrollment
  • Medicare enrollment name: Eye Associates LLC
  • 12 clinicians in this Medicare group
NPI 1104014216 (985) 735-8137
Benjamin Guidry MD LLC
27 mi
Retina Specialist
3636 S I 10 SERVICE RD W STE 204
Metairie, LA 70001
  • Reassigned Medicare billing, Louisiana enrollment
  • 9 clinicians in this Medicare group
NPI 1184116204 (504) 218-4936

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 18

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient complete exam of visual system 92014
An established patient complete exam of the visual system involves a thorough check of your eyes and vision. It assesses eye health, checks for diseases, and measures your ability to see clearly at different distances. It's a routine, non-invasive procedure.
992 services792 patients
Extended exam of the back part of the eye with optic nerve drawing 92202
This procedure involves a detailed examination of the back part of your eye, focusing on the optic nerve, a crucial component for vision. A drawing or map of the optic nerve is created to help track any changes over time. This can help detect eye diseases early.
355 services344 patients
Measurement of corneal curvature and depth of eye 92136
This procedure measures the shape and depth of your eye, specifically the cornea, the clear front surface. It helps in diagnosing conditions, planning for surgeries, or fitting contact lenses. It's non-invasive and painless.
308 services121 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
203 services203 patients
Imaging of optic nerve 92133
Imaging of the optic nerve is a non-invasive procedure that captures detailed pictures of your optic nerve. It helps doctors assess eye health, particularly for conditions like glaucoma. It's painless, quick, and uses safe technology like MRI or OCT (Optical Coherence Tomography).
181 services181 patients
Extended exam of the back part of the eye with retinal drawing 92201
This procedure involves a detailed examination of the back part of your eye, including the retina. It helps identify any abnormalities or issues. A retinal drawing is made to record findings. It's non-invasive and crucial for maintaining eye health.
176 services174 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Sterling Surgical Hospital

Acute Care Hospitals · Slidell, LA
OwnershipProprietary
CMS Certification Number190256
Location989 Robert BlvdSlidell, LA 70458 · St. Tammany County

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 70471 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$124.60 typical visit price
range $53.43 – $164.73
Typical copayment $31.15 (range $13.35 – $41.18)
Most-billed visit code 99204
Established Patient
$67.06 typical visit price
range $16.64 – $133.62
Typical copayment $16.76 (range $4.16 – $33.40)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

99.81/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality100
Improvement Activities40
Cost92.94

Reported Quality Measures

Age-Related Macular Degeneration (AMD): Counseling on Antioxidant Supplement
Percentage of patients aged 50 years and older with a diagnosis of age-related macular degeneration (AMD) or their caregiver(s) who were counseled within 12 months on the benefits and/or risks of the Age-Related Eye Disease Study (AREDS) formulation for…
2%60 patients1/55-star benchmark: 100%
Age-Related Macular Degeneration (AMD): Dilated Macular Examination
Percentage of patients aged 50 years and older with a diagnosis of age-related macular degeneration (AMD) who had a dilated macular examination performed which included documentation of the presence or absence of macular thickening or geographic atrophy or…
12%58 patients1/55-star benchmark: 100%
Cataracts: 20/40 or Better Visual Acuity within 90 Days Following Cataract Surgery
Percentage of patients aged 18 years and older with a diagnosis of uncomplicated cataract who had cataract surgery and no significant ocular conditions impacting the visual outcome of surgery and had best-corrected visual acuity of 20/40 or better (distance…
97%115 patients
Closing the Referral Loop: Receipt of Specialist Report
Percentage of patients with referrals, regardless of age, for which the referring provider receives a report from the provider to whom the patient was referred
33%119 patients2/55-star benchmark: 95%
Diabetes: Eye Exam
Percentage of patients 18-75 years of age with diabetes who had a retinal or dilated eye exam by an eye care professional during the measurement period or a negative retinal exam (no evidence of retinopathy) in the 12 months prior to the measurement period
97%358 patients4/55-star benchmark: 100%
Diabetic Retinopathy: Communication with the Physician Managing Ongoing Diabetes Care
Percentage of patients aged 18 years and older with a diagnosis of diabetic retinopathy who had a dilated macular or fundus exam performed with documented communication to the physician who manages the ongoing care of the patient with diabetes mellitus…
100%21 patients5/55-star benchmark: 100%
Diabetic Retinopathy: Documentation of Presence or Absence of Macular Edema and Level of Severity of Retinopathy
Percentage of patients aged 18 years and older with a diagnosis of diabetic retinopathy who had a dilated macular or fundus exam performed which included documentation of the level of severity of retinopathy and the presence or absence of macular edema during…
88%24 patients4/55-star benchmark: 100%
Documentation of Current Medications in the Medical Record
Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter.
92%3,755 patients4/55-star benchmark: 100%
e-Prescribing
At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.
100%20 patients5/55-star benchmark: 100%
Medication Reconciliation
The MIPS eligible clinician performs medication reconciliation for at least one transition of care in which the patient is transitioned into the care of the MIPS eligible clinician.
100%68 patients5/55-star benchmark: 100%
Patient-Specific Education
The MIPS eligible clinician must use clinically relevant information from CEHRT to identify patient-specific educational resources and provide access to those materials to at least one unique patient seen by the MIPS eligible clinician.
71%148 patients3/55-star benchmark: 100%
Pneumococcal Vaccination Status for Older Adults
Percentage of patients 65 years of age and older who have ever received a pneumococcal vaccine
98%269 patients5/55-star benchmark: 90%
Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan
Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…
10%516 patients1/55-star benchmark: 97%
Preventive Care and Screening: Influenza Immunization
Percentage of patients aged 6 months and older seen for a visit between October 1 and March 31 who received an influenza immunization OR who reported previous receipt of an influenza immunization
92%173 patients5/55-star benchmark: 88%
Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention
Percentage of patients aged 18 years and older who were screened for tobacco use one or more times within 24 months AND who received tobacco cessation intervention if identified as a tobacco user
Patients tobacco: 87% · 472 patients
89%472 patients
Primary Open-Angle Glaucoma (POAG): Optic Nerve Evaluation
Percentage of patients aged 18 years and older with a diagnosis of primary open-angle glaucoma (POAG) who have an optic nerve head evaluation during one or more office visits within 12 months
62%381 patients2/55-star benchmark: 100%
Provide Patient Access
At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold…
48%3,284 patients2/55-star benchmark: 100%
Secure Messaging
For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of CEHRT to the patient (or the patient-authorized representative), or in response to a secure…
36%148 patients2/55-star benchmark: 79%
Use of High-Risk Medications in the Elderly
Percentage of patients 65 years of age and older who were ordered high-risk medications. Two rates are submitted. 1) Percentage of patients who were ordered at least one high-risk medication.
Lower rates are better for this measure.
Patients 2+: 0% · 1,404 patients
0%1,404 patients5/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. RALPH R NIX III MD
Specialist
1580 W CAUSEWAY APPROACH, SUITE 3
MANDEVILLE, LA 70471
St. Tammany Parish (985) 626-8223
RALPH R NIX III LLC
Specialist
1580 W CAUSEWAY APPROACH, SUITE 3
MANDEVILLE, LA 70471
St. Tammany Parish (985) 626-8223
OBYRNE EYE CLINIC, L.L.C.
Specialist
1580 W CAUSEWAY APPROACH, SUITE 3
MANDEVILLE, LA 70471
St. Tammany Parish (985) 624-5573
DR. MARIJA GUIDRY LASALLE D.D.S.
Dentist (Periodontics)
1580 W CAUSEWAY APPROACH, SUITE 5
MANDEVILLE, LA 70471
St. Tammany Parish (985) 727-1133
OLIVER WENDALL WHITNEY A PROFESSIONAL OPTOMETRY CORP (APOC)
Optometrist
1580 W CAUSEWAY APPROACH, SUITE 3
MANDEVILLE, LA 70471
St. Tammany Parish (985) 626-5242
DR. OLIVER WENDELL WHITNEY OD
Optometrist
1580 W CAUSEWAY APPROACH, STE 3
MANDEVILLE, LA 70471
St. Tammany Parish (985) 626-5242

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Marilu O'byrne's NPI number?

The NPI number for Marilu O'byrne is 1083772453. It was assigned to this individual provider in the NPPES registry on December 5, 2006.

Where is Marilu O'byrne located?

Marilu O'byrne practices at 1580 W Causeway Approach Suite 3, Mandeville, LA 70471. The listed phone number is (985) 624-5573.

What is Marilu O'byrne's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Is Marilu O'byrne enrolled in Medicare?

Yes. Marilu O'byrne is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Marilu O'byrne's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Marilu O'byrne reassigns Medicare benefits to 3 organizations: Obyrne Eye Clinic, L.L.C. (Mandeville, LA), Germer Haley LLC (Bogalusa, LA) and Benjamin Guidry MD LLC (Metairie, LA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Marilu O'byrne's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Marilu O'byrne accept?

Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and AmeriHealth Caritas Next and 4 other insurers list Marilu O'byrne as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Marilu O'byrne affiliated with any hospitals?

According to CMS data, Marilu O'byrne is affiliated with Sterling Surgical Hospital.

When was this NPI record last updated?

The NPPES record for Marilu O'byrne was last updated on May 29, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.