Matthew Grundfast, D.O.
NPI 1124011085 · Gastroenterology Physician · Dublin, GA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Grundfast, D.O. is a Gastroenterology Physician provider in Dublin, GA (NPI 1124011085).
Provider details
- NPI number
- 1124011085
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 052944 (GA)
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
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
283 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 | 73 | $243 |
| Colorectal Cancer Screening; Colonoscopy on Individual at High RiskG0105 | 42 | $178 |
| Diagnostic Exam of Large Bowel Using a Flexible Endoscope45378 | 36 | $177 |
| Diagnostic Exam of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43235 | 34 | $87 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 27 | $243 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 164 | 159 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 99 | 96 |
| Omeprazole | 63 | 26 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 22 | 21 |
| Sodium Chloride/Nahco3/Kcl/Pegbrand: Peg 3350-Electrolyte | 18 | 17 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$88 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
Additional practice locations (2)
- 2740 Ray Knight Way Ste 100Albany, GA 31707-0226Phone: (229) 312-0698Fax: (229) 438-7898
- 104 Fairview Park DrDublin, GA 31021-2565Phone: (478) 277-1255Fax: (478) 304-1467
Registry dates
- Enumerated
- 2005-08-25
- Last updated
- 2022-05-25
- Certified
- 2022-05-25
Frequently asked questions
- What is Matthew Grundfast's NPI number?
- Matthew Grundfast's National Provider Identifier (NPI) is 1124011085, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Grundfast's specialty?
- Matthew Grundfast is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Grundfast located?
- Matthew Grundfast's practice location on file with NPPES is 111 Fairview Park Dr, Dublin, GA 31021-2501.
- What is Matthew Grundfast's phone number?
- The practice phone number listed in the NPPES registry for Matthew Grundfast is (478) 277-1929.
- Does Matthew Grundfast accept Medicare?
- Matthew Grundfast is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Grundfast's NPI active?
- Yes — Matthew Grundfast's NPI (1124011085) is active in the NPPES registry as of the last update on 2022-05-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.