Quick answers
- Does Colleen G. Balmaseda accept Medicare assignment?
- Medicare's clinician data says Colleen G. Balmaseda may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Colleen G. Balmaseda see?
- In 2024, CMS data shows 31 Original Medicare patients and 42 services for Colleen G. Balmaseda. This counts Original Medicare only and measures volume, not quality.
- What is Colleen G. Balmaseda's NPI number?
- 1386314839. 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 Colleen G. Balmaseda, 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 | 31 |
|---|---|
| Services billed to Medicare | 42 |
| Different services or procedures | 15 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Aspiration of fluid from chest cavity using imaging guidance (32555)13 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%
- Chronic kidney disease61%
- Atrial fibrillation55%
- Arthritis52%
- Ischemic heart disease52%
Hospitals where Colleen G. Balmaseda works
Medicare's Facility Affiliation Data lists Colleen G. Balmaseda 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.
- Suburban HospitalBethesda, MD · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 210022
Practice locations
Addresses where Colleen G. Balmaseda is enrolled with Medicare (CMS data updated October 2, 2026).
- 6420 Rockledge DrBethesda, MD 20817 (301) 897‑5656
- 8600 Old Georgetown RdBethesda, MD 20814 (301) 896‑3100
Group practices
Medicare enrollment lists Colleen G. Balmaseda as a member of these groups (CMS data updated October 2, 2026).
- Johns Hopkins University2,909 clinicians in the group
- Johns Hopkins University713 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Bethesda
Clinicians with the same Medicare primary specialty in Bethesda, MD — not a recommendation.
Other clinicians in Johns Hopkins University
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2021 |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1386314839 |
| 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