Quick answers
- Does Antonio D. Zarraga accept Medicare assignment?
- Yes. Medicare's clinician data says Antonio D. Zarraga 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 Antonio D. Zarraga see?
- In 2024, CMS data shows 333 Original Medicare patients and 1,400 services for Antonio D. Zarraga. This counts Original Medicare only and measures volume, not quality.
- What is Antonio D. Zarraga's NPI number?
- 1013095587. 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 Antonio D. Zarraga, 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 | 333 |
|---|---|
| Services billed to Medicare | 1,400 |
| Different services or procedures | 32 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent 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)333 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)298 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)281 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)155 services
- Influenza vaccine split virus, preservative free (90662)58 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%
- Arthritis40%
- Ischemic heart disease31%
- Diabetes29%
- Atrial fibrillation25%
Hospitals where Antonio D. Zarraga works
Medicare's Facility Affiliation Data lists Antonio D. Zarraga 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.
- Bayhealth Hospital, Sussex CampusMilford, DE · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 080009
- Bayhealth Medical Center, Kent CampusDover, DE · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 080004
- Beebe Medical CenterLewes, DE · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 080007
Practice locations
Addresses where Antonio D. Zarraga is enrolled with Medicare (CMS data updated October 2, 2026).
- 101 Wellness Way, 200 Bayhealth Primary Care SussexMilford, DE 19963 (302) 430‑0867
Group practices
Medicare enrollment lists Antonio D. Zarraga as a member of this group (CMS data updated October 2, 2026).
- Bayhealth Medical Center, Inc413 clinicians in the group
Specialties
- Internal Medicineprimary
- Infectious Diseasealso
Other internal medicine doctors in Milford
Clinicians with the same Medicare primary specialty in Milford, DE — not a recommendation.
Other clinicians in Bayhealth Medical Center, Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1982 (44 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) | 1013095587 |
| 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