Spencer Sullivan, MD
NPI 1073735114 · Pediatric Hematology & Oncology Physician · Madison, MS
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Spencer Sullivan, MD is a Pediatric Hematology & Oncology Physician provider in Madison, MS (NPI 1073735114).
Provider details
- NPI number
- 1073735114
- Entity type
- Individual
- Primary specialty
- Pediatric Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 23304 (MS)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
66 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 27 | $9 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 20 | $162 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 19 | $110 |
Typical Medicare-allowed amounts for these services range $9–$162 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl | 155 | 15 |
| Promethazine Hcl | 46 | — |
| Gabapentin | 41 | — |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 29 | — |
| Deferasirox | 27 | — |
| Methadone Hcl | 24 | — |
| Hydroxyureabrand: Siklos | 24 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$5,826 across 10 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-02
- Last updated
- 2025-04-14
- Certified
- 2025-04-14
Frequently asked questions
- What is Spencer Sullivan's NPI number?
- Spencer Sullivan's National Provider Identifier (NPI) is 1073735114, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Spencer Sullivan's specialty?
- Spencer Sullivan is listed in the NPPES registry with a primary specialty of Pediatric Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Spencer Sullivan located?
- Spencer Sullivan's practice location on file with NPPES is 7730 Old Canton Rd Bldg B, Madison, MS 39110-9299.
- What is Spencer Sullivan's phone number?
- The practice phone number listed in the NPPES registry for Spencer Sullivan is (601) 499-0935.
- Does Spencer Sullivan accept Medicare?
- Spencer Sullivan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Spencer Sullivan's NPI active?
- Yes — Spencer Sullivan's NPI (1073735114) is active in the NPPES registry as of the last update on 2025-04-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.