Loading...
NPI 1689855934 · St John, VI · Internal Medicine Physician
Customize your policy alerts
Get alerted when relevant policies change without checking for updates manually.
Monitor payer policy activity
Jennifer Walker is a internal medicine physician provider located in St John, U.S. Virgin Islands. This profile covers 5 Medicare and 2 Medicaid CPT/HCPCS procedure codes, with claims volume, average reimbursement, and total revenue by code, benchmarked against other providers billing the same services.
Provider details (source: NPPES NPI Registry)
| Field | Value |
|---|---|
| Entity Type | Individual |
| Organization | Jennifer Walker |
| Address | 9901 Emmaus |
| City | St John |
| State | VI |
| ZIP | 00830 |
| Taxonomy | Internal Medicine Physician |
| NPI Enumerated | November 15, 2007 |
Lifetime revenue by payer source (source: CMS Medicare & Medicaid claims data)
| Payer Source | Total Paid |
|---|---|
| Medicare | $42K |
| Medicaid | $17.7K |
This provider bills both Medicare and Medicaid but Medicare is the larger payer on file, with $42K in lifetime Medicare revenue versus $17.7K in lifetime Medicaid revenue. Both payers are represented in the profile, so this is not a single‑payer practice, but Medicare drives the majority of billed value.
Medicare revenue is highly concentrated: the precomputed top three Medicare codes (99232, 99291, 99222) account for 88.7% of this provider's total Medicare revenue. The single largest Medicare line is 99232 (474 claims, $56 avg paid/claim, $26.5K revenue; 62.9% of Medicare revenue), indicating heavy reliance on subsequent inpatient/observation E/M encounters.
The mix of top Medicare codes — 99232 (subsequent inpatient/observation), 99291 (critical care), and 99222 (initial inpatient/observation) — points to an inpatient/hospitalist practice model with some delivery of critical care–level services. High claim counts for 99232 and the presence of 99291 suggest routine hospital ward work plus episodic critical care management rather than a purely outpatient panel.
Medicaid billing is even more concentrated: the precomputed top three Medicaid codes account for 100.0% of Medicaid revenue, with two codes driving all reported Medicaid dollars. Code 99232 represents $12.8K (427 claims, $30 avg paid/claim; 72.9% of Medicaid revenue) and 99233 represents $4.8K (13 claims, $366 avg paid/claim; 27.1% of Medicaid revenue), showing that subsequent inpatient visits dominate the provider's Medicaid activity.
On competitive standing for Medicare codes, the provider ranks in typical ranges nationally: 99232 is #16277 of 177383 providers nationally (91th percentile; typical, unremarkable volume for this code), 99291 is #37520 of 71290 (46th percentile; typical, unremarkable volume), and 99222 is #28177 of 117621 (75th percentile; typical, unremarkable volume). These ranks suggest the provider is an active but not nationally dominant biller for these hospital E/M and critical care codes.
State-level Medicaid ranks should be interpreted cautiously because the in‑state peer group is very small: 99232 ranks #3 of 5 providers in-state (50th percentile; typical, unremarkable volume) and 99233 ranks #5 of 5 providers in-state (0th percentile; typical, unremarkable volume). In a five‑provider pool, small claim counts (e.g., 13 claims for 99233) can produce large swings in rank without indicating an unusual practice pattern.
The provider has a long NPI tenure, enumerated 2007-11-15 (~19 years ago), which supports that these billing patterns come from an established practice rather than a newly registered clinician. Longevity combined with concentrated inpatient codes is consistent with sustained hospital-based work over time.
There are no code labels indicating statistical outlier behavior; the supplied plain-English labels for the top codes are “typical, unremarkable volume.” One operational note is that Medicaid revenue for 99233 is driven by a small number of high‑paid claims (13 claims at $366 avg paid/claim), so Medicaid revenue volatility may be higher than Medicare given the lower claim counts and the small in‑state provider pool.
Medicare revenue breakdown by CPT/HCPCS procedure code.
View: Bar Chart1 / 2
The CPT/HCPCS codes generating the most Medicare revenue for this provider.
5 rows
| CPT/HCPCS Code | Description | Claims | Avg Paid | Revenue |
|---|---|---|---|---|
| 99232 | The provider sees a patient for a subsequent hospital inpatient or observation care visit involving evaluation and management (E/M). The visit involves a moderate level of medical decision making or… | 470 | $60 | $26.5K |
| 99291 | Critical care services include the treatment of vital organ failure or prevention of further life–threatening conditions. Delivering medical care in a moment of crisis and in time of emergency is… | 40 | $160 | $6.5K |
| 99222 | The provider sees a patient for an initial hospital inpatient or observation care visit involving evaluation and management (E/M). The visit involves a moderate level of medical decision making or… | 50 | $80 | $4.4K |
| 99231 | The provider sees a patient for a subsequent hospital inpatient or observation care visit involving evaluation and management (E/M). The visit involves a straightforward or low level of medical… | 80 | $30 | $2.7K |
| 99238 | The provider sees a patient for hospital inpatient or observation discharge day management, involving evaluation and management (E/M). The provider spends 30 minutes or less on the service on the… | 40 | $50 | $2.1K |
How this provider's Medicare billing volume and revenue compare to other providers nationally and within its state, across 5 CPT/HCPCS codes.
Medicaid revenue breakdown by year and by CPT/HCPCS procedure code, including monthly billing trends and the top codes driving revenue.
View: By Year1 / 3
Every CPT/HCPCS code this provider has billed to Medicaid, with claims volume, average payment, and total revenue.
2 rows
| CPT/HCPCS Code | Description | Claims | Avg Paid | Revenue |
|---|---|---|---|---|
| 99232 | The provider sees a patient for a subsequent hospital inpatient or observation care visit involving evaluation and management (E/M). The visit involves a moderate level of medical decision making or… | 430 | $30 | $12.8K |
| 99233 | The provider sees a patient for a subsequent hospital inpatient or observation care visit involving evaluation and management (E/M). The visit involves a high level of medical decision making or the… | 10 | $370 | $4.8K |
How this provider's Medicaid billing volume and revenue compare to other U.S. Virgin Islands providers billing the same CPT/HCPCS codes.
Full comparison — all codes billed, vs. U.S. Virgin Islands median
2 rows
| CPT/HCPCS Code | Description | Rank | Provider Count | Median Claims | Avg Paid | Average Revenue |
|---|---|---|---|---|---|---|
| 99232 | The provider sees a patient for a subsequent hospital inpatient or observation care visit involving evaluation and management (E/M). The visit involves a moderate level of medical decision making or… | 3 | 10 | 430 | $50 | $41.4K |
| 99233 | The provider sees a patient for a subsequent hospital inpatient or observation care visit involving evaluation and management (E/M). The visit involves a high level of medical decision making or the… | 5 | 10 | 100 | $80 | $7.4K |
Other providers in the same ZIP code as Jennifer Walker, ranked by combined Medicare and Medicaid revenue.
| Provider | State | Taxonomy | Medicare Revenue | Medicaid Revenue |
|---|---|---|---|---|
| Christopher Reinbold | VI | Physical Therapist | $24.1K | $0 |
| Ramesh Kianfar | VI | Dentist | $0 | $20.7K |
| Francine Jacobson | VI | Community Health Clinic/Center | $1.8K | $0 |
| Veronica O'brien | VI | Advanced Practice Midwife | $940 | $0 |
Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.