Quick answers
- Does Semyon Gambarin accept Medicare assignment?
- Yes. Medicare's clinician data says Semyon Gambarin 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 Semyon Gambarin see?
- In 2024, CMS data shows 258 Original Medicare patients and 475 services for Semyon Gambarin. This counts Original Medicare only and measures volume, not quality.
- What is Semyon Gambarin's NPI number?
- 1871508937. 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 Semyon Gambarin, 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 | 258 |
|---|---|
| Services billed to Medicare | 475 |
| Different services or procedures | 62 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more (99202)80 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)46 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)44 services
- Biopsy of large bowel using a flexible endoscope (45380)34 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)34 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 cholesterol71%
- High blood pressure61%
- Diabetes28%
- Arthritis28%
- Ischemic heart disease21%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)17%
Hospitals where Semyon Gambarin works
Medicare's Facility Affiliation Data lists Semyon Gambarin 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.
- Ascension Seton NorthwestAustin, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 450867
- North Austin Medical CenterAustin, TX · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 450809
- Northwest Hills Surgical HospitalAustin, TX · Acute Care Hospital · Emergency services: listed by Medicare · CCN 450808
Practice locations
Addresses where Semyon Gambarin is enrolled with Medicare (CMS data updated October 2, 2026).
- 6835 Austin Ctr BlvdAustin, TX 78731 (512) 346‑6611
Group practices
Medicare enrollment lists Semyon Gambarin as a member of this group (CMS data updated October 2, 2026).
- Austin Regional Clinic PA397 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in Austin
Clinicians with the same Medicare primary specialty in Austin, TX — not a recommendation.
Other clinicians in Austin Regional Clinic PA
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1998 (28 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1871508937 |
| 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