Matthew Karowe, M.D.
NPI 1851310478 · Gastroenterology Physician · Boulder, CO
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Karowe, M.D. is a Gastroenterology Physician provider in Boulder, CO (NPI 1851310478).
Provider details
- NPI number
- 1851310478
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 38584 (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
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
308 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 Large Bowel Using a Flexible Endoscope45380 | 79 | $131 |
| 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 | 56 | $5 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 40 | $246 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 34 | $129 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 24 | $91 |
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 |
|---|---|---|
| Pantoprazole Sodium | 96 | 49 |
| Famotidine | 91 | 52 |
| Budesonidebrand: Budesonide Dr | 33 | 12 |
| Omeprazole | 33 | 15 |
| Adalimumabbrand: Humira(cf) Pen | 29 | — |
| Dexlansoprazolebrand: Dexlansoprazole Dr | 19 | — |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$93 across 4 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
- 2006-07-18
- Last updated
- 2020-03-05
- Certified
- 2020-03-05
Frequently asked questions
- What is Matthew Karowe's NPI number?
- Matthew Karowe's National Provider Identifier (NPI) is 1851310478, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Karowe's specialty?
- Matthew Karowe is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Karowe located?
- Matthew Karowe's practice location on file with NPPES is 1755 48th St, Boulder, CO 80301-2711.
- What is Matthew Karowe's phone number?
- The practice phone number listed in the NPPES registry for Matthew Karowe is (303) 604-5000.
- Does Matthew Karowe accept Medicare?
- Matthew Karowe is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Karowe's NPI active?
- Yes — Matthew Karowe's NPI (1851310478) is active in the NPPES registry as of the last update on 2020-03-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.