Physician Profile
Unclaimed ProfileAbout IRBY
John Mark Irby, FNP is a nurse practitioner — family practising in Mccomb, MS. According to Medicare claims data, John cared for 107 Medicare patients across 112 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Areas of Expertise
Common questions
What is Dr. Irby's specialty?
Dr. Irby is a nurse practitioner in Mccomb, MS. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “Nurse Practitioner — Family”.
NPI registry
Where can I find Dr. Irby?
Dr. Irby is listed at 215 MARION AVE, Mccomb, MS 39648. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Irby?
The number on file is (601) 249-5500. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Irby's NPI number?
Dr. Irby's National Provider Identifier is 1962968040. 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
How long has Dr. Irby been practising?
Dr. Irby has 7+ years experience. Registered with an NPI since 2019. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practised for longer than this.
NPI registry
What is Dr. Irby known for?
According to Medicare billing data, Dr. Irby the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Irby confirmed this information?
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.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (601) 249-5500
- Email not available
Practice Locations
215 MARION AVE
Mccomb, MS 39648
Procedures Most Often Billed to Medicare
112 services · 107 patients · 3 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Emergency department visit with low level of medical decision making | Office visit | 99283 |
76 |
| Emergency department visit with moderate level of medical decision making | Office visit | 99284 |
25 |
| Emergency department visit with straightforward medical decision making | Office visit | 99282 |
11 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Claim this profileRelated providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other nurse practitioners at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 8
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 7 related providers in 1 group
Other nurse practitioners in Mccomb 7
Same specialty, same city.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.