Provider Profile
Mary C. Littlejohn, APN
Unclaimed ProfileAbout Mary Littlejohn
Mary C. Littlejohn, APN is a nurse practitioner based in Belleville, IL. Mary is also listed as specializing in nurse practitioner — adult health. Medicare claims data shows Mary provided 586 services to 431 patients. The services billed most often include subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes, advance care planning, first 30 minutes, and subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes.
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
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (618) 257-2029
- Email not available
Practice Locations
130 LINCOLN COURT PLACE
Belleville, IL 62221
Procedures Most Often Billed to Medicare
586 services · 431 patients · 8 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
254 | More than most peers in Nurse Practitioner |
| Advance care planning, first 30 minutes | Office visit | 99497 |
85 | More often than most peers in Nurse Practitioner |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
69 | As often as other peers in Nurse Practitioner |
| Hospital discharge day management, more than 30 minutes | Office visit | 99239 |
54 | More often than most peers in Nurse Practitioner |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
48 | As often as other peers in Nurse Practitioner |
| Hospital discharge day management, 30 minutes or less | Office visit | 99238 |
46 | More often than most peers in Nurse Practitioner |
| Critical care, first 30-74 minutes | Office visit | 99291 |
18 | Less often than most peers in Nurse Practitioner |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
12 | Less often than most peers in Nurse Practitioner |
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 nurse practitioners at this location 2
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 5
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 1
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 23 related providers in 3 groups
Other nurse practitioners in Belleville 7
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2012 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What does Mary C. Littlejohn specialize in?
Mary C. Littlejohn is a nurse practitioner in Belleville, IL. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Mary C. Littlejohn located?
Mary C. Littlejohn is listed at 130 Lincoln Court Place, Belleville, IL 62221. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Mary C. Littlejohn's phone number?
The number on file is (618) 257-2029. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Mary C. Littlejohn?
Mary C. Littlejohn's National Provider Identifier is 1255779955. 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 Mary C. Littlejohn train?
Mary C. Littlejohn attended Other, graduating in 2012. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Mary C. Littlejohn have?
Mary C. Littlejohn has 14 years experience. Calculated from a graduation year of 2012, reported in the CMS National Downloadable File.
CMS public data
What does Mary C. Littlejohn do most often?
According to Medicare billing data, Mary C. Littlejohn 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
Is Mary C. Littlejohn's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Mary C. Littlejohn. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.