Quick answers
- Does Sissi Hernandez accept Medicare assignment?
- Yes. Medicare's clinician data says Sissi Hernandez 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 Sissi Hernandez see?
- In 2024, CMS data shows 384 Original Medicare patients and 915 services for Sissi Hernandez. This counts Original Medicare only and measures volume, not quality.
- What is Sissi Hernandez's NPI number?
- 1184262701. 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 Sissi Hernandez, 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 | 384 |
|---|---|
| Services billed to Medicare | 915 |
| Different services or procedures | 13 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes (99349)357 services
- Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes (99350)169 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)145 services
- Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes (99348)106 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)95 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 disease74%
- Diabetes61%
- Arthritis49%
- Ischemic heart disease42%
Hospitals where Sissi Hernandez works
Medicare's Facility Affiliation Data lists Sissi Hernandez 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.
- Northwest Hospital CenterRandallstown, MD · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 210040
Practice locations
Addresses where Sissi Hernandez is enrolled with Medicare (CMS data updated October 2, 2026).
- 3800 Old Court RdPikesville, MD 21208 (240) 426‑2337
- 5401 Old Court RdRandallstown, MD 21133 (410) 521‑2200
- 612 Oak Knoll TerRockville, MD 20850 (240) 426‑2337
- 7110 Minstrel WayColumbia, MD 21045 (240) 426‑2337
Group practices
Medicare enrollment lists Sissi Hernandez as a member of these groups (CMS data updated October 2, 2026).
- Mep Observation Services LLC44 clinicians in the group
- Ramani Nokku MD PC4 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Pikesville
Clinicians with the same Medicare primary specialty in Pikesville, MD — not a recommendation.
Other clinicians in Mep Observation Services LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2018 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1184262701 |
| 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