Quick answers
- Does Marissa Maricel A. Mercado accept Medicare assignment?
- Yes. Medicare's clinician data says Marissa Maricel A. Mercado 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 Marissa Maricel A. Mercado see?
- In 2024, CMS data shows 207 Original Medicare patients and 1,588 services for Marissa Maricel A. Mercado. This counts Original Medicare only and measures volume, not quality.
- What is Marissa Maricel A. Mercado's NPI number?
- 1649408667. 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 Marissa Maricel A. Mercado, 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 | 207 |
|---|---|
| Services billed to Medicare | 1,588 |
| Different services or procedures | 47 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)299 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)279 services
- Insertion of needle into vein for collection of blood sample (36415)238 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)119 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)105 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 cholesterol75%
- High blood pressure72%
- Arthritis41%
- Diabetes34%
- Chronic kidney disease28%
- Anxiety20%
Hospitals where Marissa Maricel A. Mercado works
Medicare's Facility Affiliation Data lists Marissa Maricel A. Mercado 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.
- NGMC Barrow, LLCWinder, GA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 110045
- Northeast Georgia Medical Center, IncGainesville, GA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 110029
Practice locations
Addresses where Marissa Maricel A. Mercado is enrolled with Medicare (CMS data updated October 2, 2026).
- 26 W Jackson Commons DrHoschton, GA 30548 (706) 658‑2452
- 597 S Enota Dr NEGainesville, GA 30501
- PO Box, Suite 1060Oakwood, GA 30566
Group practices
Medicare enrollment lists Marissa Maricel A. Mercado as a member of this group (CMS data updated October 2, 2026).
- Northeast Georgia Physicians Group Inc883 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Hoschton
Clinicians with the same Medicare primary specialty in Hoschton, GA — not a recommendation.
Other clinicians in Northeast Georgia Physicians Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2005 (21 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1649408667 |
| 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