Mark Mallory, M.D.
NPI 1336116888 · Gastroenterology Physician · Boise, ID
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Mallory, M.D. is a Gastroenterology Physician provider in Boise, ID (NPI 1336116888).
Provider details
- NPI number
- 1336116888
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- M8780 (ID)
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
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
697 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) |
|---|---|---|
| Moderate Sedation Services Provided By the Same Physician Or Other Qualified Health Care Professional Performing a Gastrointestinal Endoscopic Service That Sedation Supports, Requiring the Presence of an Independent Trained Observer to Assist in the MonitoG0500 | 244 | $5 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 178 | $227 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 74 | $79 |
| Insertion of Guide Wire With Dilation of Esophagus Using a Flexible Endoscope43248 | 66 | $132 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 54 | $123 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 202 | 79 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 124 | 123 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 69 | 68 |
| Pantoprazole Sodium | 62 | 22 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 59 | 59 |
| Famotidine | 51 | 23 |
| Budesonidebrand: Budesonide Dr |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,124 across 64 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
- 2006-03-03
- Last updated
- 2007-09-07
Frequently asked questions
- What is Mark Mallory's NPI number?
- Mark Mallory's National Provider Identifier (NPI) is 1336116888, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Mallory's specialty?
- Mark Mallory is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Mallory located?
- Mark Mallory's practice location on file with NPPES is 6259 W Emerald St, Boise, ID 83704-8731.
- What is Mark Mallory's phone number?
- The practice phone number listed in the NPPES registry for Mark Mallory is (208) 489-1900.
- Does Mark Mallory accept Medicare?
- Mark Mallory is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Mallory's NPI active?
- Yes — Mark Mallory's NPI (1336116888) is active in the NPPES registry as of the last update on 2007-09-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.