Quick answers
- Does Carlos E. Montenegro accept Medicare assignment?
- Yes. Medicare's clinician data says Carlos E. Montenegro 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 Carlos E. Montenegro see?
- In 2024, CMS data shows 226 Original Medicare patients and 624 services for Carlos E. Montenegro. This counts Original Medicare only and measures volume, not quality.
- What is Carlos E. Montenegro's NPI number?
- 1588613103. 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 Carlos E. Montenegro, 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 | 226 |
|---|---|
| Services billed to Medicare | 624 |
| Different services or procedures | 91 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)140 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)69 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)67 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)58 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)52 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%
- Arthritis46%
- Diabetes31%
- Anxiety28%
- Chronic kidney disease24%
Hospitals where Carlos E. Montenegro works
Medicare's Facility Affiliation Data lists Carlos E. Montenegro 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.
- Coastal Carolina HospitalHardeeville, SC · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 420101
- Colleton Medical CenterWalterboro, SC · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 420030
- Novant Health Hilton Head Medical CenterHilton Head Island, SC · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 420080
Practice locations
Addresses where Carlos E. Montenegro is enrolled with Medicare (CMS data updated October 2, 2026).
- 1010 Medical Ctr Dr, Suite 250Hardeeville, SC 29927 (843) 689‑1326
- 75 Baylor Dr, Suite 155Bluffton, SC 29910 (843) 682‑7480
Group practices
Medicare enrollment lists Carlos E. Montenegro as a member of this group (CMS data updated October 2, 2026).
- Hilton Head Regional Physician Group LLC113 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in South Carolina
Clinicians with the same Medicare primary specialty in South Carolina — not a recommendation.
Other clinicians in Hilton Head Regional Physician Group LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1988 (38 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1588613103 |
| 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