Mack Mccain, M.D.
NPI 1558321190 · Gastroenterology Physician · Herrin, IL
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mack Mccain, M.D. is a Gastroenterology Physician provider in Herrin, IL (NPI 1558321190).
Provider details
- NPI number
- 1558321190
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 36079027 (IL)
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
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
625 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) |
|---|---|---|
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 155 | $92 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 81 | $86 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 73 | $114 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 71 | $237 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 40 | $107 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Dicyclomine Hcl | 27 | 15 |
| Lubiprostone | 20 | — |
| Omeprazole | 20 | — |
| Pantoprazole Sodium | 19 | 11 |
| Famotidine | 17 | — |
| Amitriptyline Hcl | 17 | — |
| Carvedilol | 16 | — |
| Ondansetronbrand: Ondansetron Odt |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$421 across 11 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 (1)
- 2601 W Main StCarbondale, IL 62901-1031Phone: (618) 351-7300Fax: (618) 457-7890
Registry dates
- Enumerated
- 2006-03-27
- Last updated
- 2021-09-27
- Certified
- 2021-09-27
Frequently asked questions
- What is Mack Mccain's NPI number?
- Mack Mccain's National Provider Identifier (NPI) is 1558321190, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mack Mccain's specialty?
- Mack Mccain is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Mack Mccain located?
- Mack Mccain's practice location on file with NPPES is 404 Lincoln Dr, Herrin, IL 62948.
- What is Mack Mccain's phone number?
- The practice phone number listed in the NPPES registry for Mack Mccain is (618) 993-0056.
- Does Mack Mccain accept Medicare?
- Mack Mccain is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mack Mccain's NPI active?
- Yes — Mack Mccain's NPI (1558321190) is active in the NPPES registry as of the last update on 2021-09-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.