Quick answers
- Does Carlos O. Barrero accept Medicare assignment?
- Yes. Medicare's clinician data says Carlos O. Barrero 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 O. Barrero see?
- In 2024, CMS data shows 148 Original Medicare patients and 454 services for Carlos O. Barrero. This counts Original Medicare only and measures volume, not quality.
- What is Carlos O. Barrero's NPI number?
- 1215590336. 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 O. Barrero, 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 | 148 |
|---|---|
| Services billed to Medicare | 454 |
| Different services or procedures | 30 |
| Participating Medicare provider | Yes |
| Average age of these patients | 69 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)157 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)56 services
- Blood glucose (sugar) test performed by hand-held instrument (82962)42 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)27 services
- Advance care planning, first 30 minutes (99497)25 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%
- Arthritis45%
- Diabetes39%
- Anxiety30%
- COPD29%
Practice locations
Addresses where Carlos O. Barrero is enrolled with Medicare (CMS data updated October 2, 2026).
- 1406 Crain S Hwy 106Glen Burnie, MD 21061 (410) 768‑6440
Group practices
Medicare enrollment lists Carlos O. Barrero as a member of this group (CMS data updated October 2, 2026).
- MedStar Medical Group II LLC3,767 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Glen Burnie
Clinicians with the same Medicare primary specialty in Glen Burnie, MD — not a recommendation.
Other clinicians in MedStar Medical Group II LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2018 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1215590336 |
| 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
- 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