Physician Profile
Unclaimed ProfileAbout IRBY
Marshall Scott Irby, M.D. is a healthcare provider in Monroe, LA specializing in internal medicine. Marshall is also listed as specializing in pulmonary disease. Medicare claims data shows Marshall provided 1,260 services to 885 patients.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (318) 322-5864
- Email not available
Practice Locations
2810 ARMAND ST
Monroe, LA 71201
Procedures Most Often Billed to Medicare
1,260 services · 885 patients · 6 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Test to examine how well the lungs exchange gases | Treatment | 94729 |
144 |
| Test to determine lung volumes using sensors | Treatment | 94726 |
144 |
| Test to measure expiratory airflow and volume | Treatment | 94010 |
144 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
712 |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
79 |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
37 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other internal medicines in Monroe 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1982 at Other 8
Providers who graduated from the same medical school in the same year.
More connections — 8 related providers in 1 group
Also performs Test to examine how well the lungs exchange gases 8
Providers in LA who bill this service to Medicare most often.
Common questions
What does Dr. Irby specialize in?
Dr. Irby is an internal medicine in Monroe, LA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
Where is Dr. Irby located?
Dr. Irby is listed at 2810 ARMAND ST, Monroe, LA 71201. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Irby's phone number?
The number on file is (318) 322-5864. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Irby?
Dr. Irby's National Provider Identifier is 1679560411. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Irby go to medical school?
Dr. Irby attended Other, graduating in 1982. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Irby have?
Dr. Irby has 44 years experience. Calculated from a graduation year of 1982, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Irby do most often?
According to Medicare billing data, Dr. Irby provides treatments such as test to examine how well the lungs exchange gases and test to determine lung volumes using sensors, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Irby's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Irby. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.