Michael Kelfer, MD
NPI 1306810296 · Gastroenterology Physician · Auburn, MA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Kelfer, MD is a Gastroenterology Physician provider in Auburn, MA (NPI 1306810296).
Provider details
- NPI number
- 1306810296
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 70572 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
509 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 119 | $5 |
| Colorectal Cancer Screening; Colonoscopy on Individual at High RiskG0105 | 118 | $171 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 72 | $117 |
| Colorectal Cancer Screening; Colonoscopy on Individual Not Meeting Criteria for High RiskG0121 | 49 | $168 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 44 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 512 | 507 |
| Omeprazole | 348 | 96 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 76 | 76 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 75 | 73 |
| Pantoprazole Sodium | 61 | 20 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 26 | 25 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-02-15
- Last updated
- 2019-05-20
Frequently asked questions
- What is Michael Kelfer's NPI number?
- Michael Kelfer's National Provider Identifier (NPI) is 1306810296, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Kelfer's specialty?
- Michael Kelfer is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Kelfer located?
- Michael Kelfer's practice location on file with NPPES is 385 Southbridge St, Auburn, MA 01501-2498.
- What is Michael Kelfer's phone number?
- The practice phone number listed in the NPPES registry for Michael Kelfer is (508) 425-5446.
- Does Michael Kelfer accept Medicare?
- Michael Kelfer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Kelfer's NPI active?
- Yes — Michael Kelfer's NPI (1306810296) is active in the NPPES registry as of the last update on 2019-05-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.