Quick answers
- Does Terrance A. Collins accept Medicare assignment?
- Yes. Medicare's clinician data says Terrance A. Collins 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 Terrance A. Collins see?
- In 2024, CMS data shows 838 Original Medicare patients and 3,105 services for Terrance A. Collins. This counts Original Medicare only and measures volume, not quality.
- What is Terrance A. Collins's NPI number?
- 1669438933. 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 Terrance A. Collins, 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 | 838 |
|---|---|
| Services billed to Medicare | 3,105 |
| Different services or procedures | 29 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)956 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)808 services
- Injection, regadenoson, 0.1 mg (J2785)340 services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)242 services
- Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician (93015)127 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%
- Arthritis49%
- Diabetes47%
- Ischemic heart disease40%
- Chronic kidney disease33%
Hospitals where Terrance A. Collins works
Medicare's Facility Affiliation Data lists Terrance A. Collins 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.
- MedStar Saint Mary's HospitalLeonardtown, MD · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 210028
- MedStar Southern Maryland Hospital CenterClinton, MD · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 210062
Practice locations
Addresses where Terrance A. Collins is enrolled with Medicare (CMS data updated October 2, 2026).
- 110 Irving St NWWashington, DC 20010 (202) 877‑2851
- 1145 19th St NW, 311 Mmg at 19th Street NWWashington, DC 20036 (202) 429‑2401
- 13950 Brandywine RdBrandywine, MD 20613 (301) 782‑2220
- 25500 Point Lookout RdLeonardtown, MD 20650 (240) 434‑4088
Group practices
Medicare enrollment lists Terrance A. Collins as a member of these groups (CMS data updated October 2, 2026).
- MedStar Medical Group II LLC3,767 clinicians in the group
- MedStar Heart Institute LLC301 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in District of Columbia →
Other cardiologists in Washington
Clinicians with the same Medicare primary specialty in Washington, DC — 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 | MD |
|---|---|
| Medical school | Howard University College Of Medicine |
| Graduation year | 1990 (36 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) | 1669438933 |
| 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