Quick answers
- Does Jessica I. Williams accept Medicare assignment?
- Yes. Medicare's clinician data says Jessica I. Williams 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 Jessica I. Williams see?
- In 2024, CMS data shows 608 Original Medicare patients and 970 services for Jessica I. Williams. This counts Original Medicare only and measures volume, not quality.
- What is Jessica I. Williams's NPI number?
- 1477998326. 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 Jessica I. Williams, 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 | 608 |
|---|---|
| Services billed to Medicare | 970 |
| Different services or procedures | 10 |
| Participating Medicare provider | Yes |
| Average age of these patients | 80 |
Most frequent services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)228 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)194 services
- Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes (99221)165 services
- Evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days (93296)131 services
- Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days (93294)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 blood pressure75%
- High cholesterol75%
- Heart failure59%
- Ischemic heart disease58%
- Atrial fibrillation56%
- Arthritis55%
Hospitals where Jessica I. Williams works
Medicare's Facility Affiliation Data lists Jessica I. Williams 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.
- Johns Hopkins Howard County Medical CenterColumbia, MD · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 210048
Practice locations
Addresses where Jessica I. Williams is enrolled with Medicare (CMS data updated October 2, 2026).
- 10710 Charter Dr, Suite 400Columbia, MD 21044 (410) 997‑7979
- 1300 York Rd, Suite 30dLutherville Timonium, MD 21093 (443) 275‑1337
Group practices
Medicare enrollment lists Jessica I. Williams as a member of this group (CMS data updated October 2, 2026).
- Johns Hopkins Regional Physicians LLC84 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Columbia
Clinicians with the same Medicare primary specialty in Columbia, MD — not a recommendation.
Other clinicians in Johns Hopkins Regional Physicians LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2012 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1477998326 |
| 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