Alan Williams, MD
NPI 1215951439 · Specialist · Columbus, MS
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alan Williams, MD is a Specialist provider in Columbus, MS (NPI 1215951439).
Provider details
- NPI number
- 1215951439
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 12379 (MS)
Specialties & taxonomies
Other Service Providers
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
1,705 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 | 773 | $44 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 415 | $58 |
| Remote Monitoring of Physiologic Parameters, Initial Supply of Devices With Daily Recordings Or Programmed Alerts Transmission, Each 30 Days99454 | 107 | $40 |
| Management Using the Results of Remote Vital Sign Monitoring Per Calendar Month, First 20 Minutes99457 | 98 | $44 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 86 | $232 |
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 |
|---|---|---|
| Omeprazole | 180 | 49 |
| Pantoprazole Sodium | 164 | 50 |
| Famotidine | 92 | 28 |
| Linaclotidebrand: Linzess | 90 | 23 |
| Dicyclomine Hcl | 45 | 11 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 33 | 33 |
| Esomeprazole Magnesium | 29 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$488 across 26 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
- 2006-07-27
- Last updated
- 2012-01-10
Frequently asked questions
- What is Alan Williams's NPI number?
- Alan Williams's National Provider Identifier (NPI) is 1215951439, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alan Williams's specialty?
- Alan Williams is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Alan Williams located?
- Alan Williams's practice location on file with NPPES is 600 Leigh Dr, Columbus, MS 39705-3014.
- What is Alan Williams's phone number?
- The practice phone number listed in the NPPES registry for Alan Williams is (662) 327-7525.
- Does Alan Williams accept Medicare?
- Alan Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alan Williams's NPI active?
- Yes — Alan Williams's NPI (1215951439) is active in the NPPES registry as of the last update on 2012-01-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.