William Gillespie, M.D.
NPI 1336568054 · Internal Medicine Physician · Southaven, MS
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Gillespie, M.D. is a Internal Medicine Physician provider in Southaven, MS (NPI 1336568054).
Provider details
- NPI number
- 1336568054
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 59906 (TN)
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
12 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
2,466 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) |
|---|---|---|
| Chronic Care Management Services for Two Or More Chronic Conditions, Additional 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99439 | 992 | $44 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 557 | $58 |
| Remote Monitoring of Physiologic Parameters, Initial Supply of Devices With Daily Recordings Or Programmed Alerts Transmission, Each 30 Days99454 | 120 | $40 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 113 | $89 |
| Management Using the Results of Remote Vital Sign Monitoring Per Calendar Month, First 20 Minutes99457 | 113 | $45 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 194 | 102 |
| Pantoprazole Sodium | 178 | 79 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 164 | 161 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 99 | 98 |
| Famotidine | 75 | 39 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 64 | 64 |
| Colestipol Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,028 across 59 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
Additional practice locations (2)
- 55 Lake Ave NWorcester, MA 01655-0002Phone: (508) 334-8515Fax: (508) 334-6490
- 6019 Walnut Grove RdMemphis, TN 38120-2113Phone: (901) 226-3610
Registry dates
- Enumerated
- 2014-04-09
- Last updated
- 2019-10-04
Frequently asked questions
- What is William Gillespie's NPI number?
- William Gillespie's National Provider Identifier (NPI) is 1336568054, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Gillespie's specialty?
- William Gillespie is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Gillespie located?
- William Gillespie's practice location on file with NPPES is 7601 Southcrest Pkwy, Southaven, MS 38671.
- What is William Gillespie's phone number?
- The practice phone number listed in the NPPES registry for William Gillespie is (662) 772-2980.
- Does William Gillespie accept Medicare?
- William Gillespie is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Gillespie's NPI active?
- Yes — William Gillespie's NPI (1336568054) is active in the NPPES registry as of the last update on 2019-10-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.