Quick answers
- Does Matthew G. Warndorf accept Medicare assignment?
- Yes. Medicare's clinician data says Matthew G. Warndorf accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Matthew G. Warndorf see?
- In 2024, CMS data shows 394 Original Medicare patients and 6,645 services for Matthew G. Warndorf. This counts Original Medicare only and measures volume, not quality.
- What is Matthew G. Warndorf's NPI number?
- 1255575262. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Matthew G. Warndorf, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 394 |
|---|---|
| Services billed to Medicare | 6,645 |
| Different services or procedures | 55 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Injection, vedolizumab, intravenous, 1 mg (J3380)4,800 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)152 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)78 services
- Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)63 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)63 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis42%
- Ischemic heart disease42%
- Diabetes34%
- Anxiety31%
Hospitals where Matthew G. Warndorf works
Medicare's Facility Affiliation Data lists Matthew G. Warndorf at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Albany Medical Center HospitalAlbany, NY · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 330013
- Samaritan HospitalTroy, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330180
- St Peter's HospitalAlbany, NY · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 330057
Practice locations
Addresses where Matthew G. Warndorf is enrolled with Medicare (CMS data updated October 2, 2026).
- 1375 Washington Ave, Suite 101Albany, NY 12206 (518) 533‑5000
- 1785 Route 9, Suite 101Halfmoon, NY 12065 (518) 533‑5000
Group practices
Medicare enrollment lists Matthew G. Warndorf as a member of this group (CMS data updated October 2, 2026).
- Gastrointestinal Care of Long Island PLLC183 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Albany
Clinicians with the same Medicare primary specialty in Albany, NY — not a recommendation.
Other clinicians in Gastrointestinal Care of Long Island PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2009 (17 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1255575262 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians