Mark Gerich, M.D.
NPI 1578549754 · Gastroenterology Physician · Aurora, CO
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Gerich, M.D. is a Gastroenterology Physician provider in Aurora, CO (NPI 1578549754).
Provider details
- NPI number
- 1578549754
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 45844 (CO)
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
204 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) |
|---|---|---|
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 65 | $248 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 32 | $114 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 27 | $101 |
| Diagnostic Exam of Large Bowel Using a Flexible Endoscope45378 | 20 | $176 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 17 | $125 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 78 | 73 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 64 | 64 |
| Ustekinumabbrand: Stelara | 25 | — |
| Omeprazole | 21 | 11 |
| Adalimumabbrand: Humira Pen | 20 | — |
| Mesalamine | 16 | — |
| Pantoprazole Sodium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$150 across 2 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
- 2005-12-19
- Last updated
- 2013-06-07
Frequently asked questions
- What is Mark Gerich's NPI number?
- Mark Gerich's National Provider Identifier (NPI) is 1578549754, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Gerich's specialty?
- Mark Gerich is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Gerich located?
- Mark Gerich's practice location on file with NPPES is 12605 E 16th Ave, Aurora, CO 80045-2545.
- What is Mark Gerich's phone number?
- The practice phone number listed in the NPPES registry for Mark Gerich is (720) 848-0000.
- Does Mark Gerich accept Medicare?
- Mark Gerich is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Gerich's NPI active?
- Yes — Mark Gerich's NPI (1578549754) is active in the NPPES registry as of the last update on 2013-06-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.