Physician Profile
Based in Madison, MS, Spencer K. Sullivan, MD is listed in the NPI registry under pediatric hematology-oncology. According to Medicare claims data, Spencer cared for 42 Medicare patients across 66 services. The services billed most often include insertion of needle into vein for collection of blood sample, established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
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.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
7730 OLD CANTON RD BLDG B
Madison, MS 39110
Within Pediatric Hematology-Oncology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Most searched conditions
Bleeding & blood symptoms
Bleeding & clotting
Blood clots & circulation
Blood disorders
Bone & soft tissue cancer
Brain & nerve tumors
General symptoms
Genetic blood disorders
Immune & blood disorders
Red blood cell disorders
Spleen & lymph disorders
Tumors
Vascular anomalies
Biopsies & tests
Cancer treatment
Catheters & ports
Consultations
Diagnostic lab tests
Diagnostic procedures
Hematology procedures
Infusions & transfusions
Interventional procedures
Medication therapies
Monitoring & screening
Radiation oncology
Support & follow-up
Supportive care
Surgical evaluations
Transplants & cellular therapy
Urgent oncology care
Vascular access
66 services · 42 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
27 | Too few peers to compare |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
20 | Less often than most peers in Pediatric Hematology-Oncology |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
19 | Too few peers to compare |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Dr. Sullivan is a pediatric hematology in Madison, MS. That is the designation recorded for this NPI in the federal registry, where it is listed as “Pediatric Hematology-Oncology”.
NPI registry
Dr. Sullivan is listed at 7730 Old Canton Rd Bldg B, Madison, MS 39110. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (601) 499-0935. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Dr. Sullivan's National Provider Identifier is 1073735114. 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
Dr. Sullivan has 19+ years experience. Registered with an NPI since 2007. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
According to Medicare billing data, Dr. Sullivan performs procedures including insertion of needle into vein for collection of blood sample, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Sullivan. 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.