Willemijntje A. Hoogerwerf, MD

Medicare activity in 2024

Official CMS public-use data for Willemijntje A. Hoogerwerf, 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.

Most frequent services

1. Injection, vedolizumab, intravenous, 1 mg (J3380)6,300 services
2. Injection, infliximab, excludes biosimilar, 10 mg (J1745)2,670 services
3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)586 services
4. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)240 services
5. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)170 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%
• Arthritis55%
• Ischemic heart disease36%
• Anxiety31%
• Diabetes25%

Hospitals where Willemijntje A. Hoogerwerf works

Medicare's Facility Affiliation Data lists Willemijntje A. Hoogerwerf 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.

• AdventHealth Palm CoastPalm Coast, FL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 100118
• AdventHealth Palm Coast ParkwayPalm Coast, FL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 100363
• Flagler HospitalSaint Augustine, FL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 100090

Practice locations

Addresses where Willemijntje A. Hoogerwerf is enrolled with Medicare (CMS data updated October 2, 2026).

• 40 Groover Loop, Suite 200St Augustine, FL 32086 (904) 824‑6108
• 836 Prudential Dr, Suite 801Jacksonville, FL 32207 (904) 288‑0433

Group practices

Medicare enrollment lists Willemijntje A. Hoogerwerf as a member of this group (CMS data updated October 2, 2026).

• Borland Groover Clinic, PA130 clinicians in the group

Specialties

• Gastroenterologyprimary

Find other Gastroenterology doctors in Florida →

Other gastroenterologists in St Augustine

Clinicians with the same Medicare primary specialty in St Augustine, FL — not a recommendation.

• Steven Villanueva, MD
• William F. Foody, MD
• Rachael Weigle, DO
• Stuart Soroka, MD
• Anis Ahmadi, MD
• Daniel J. Gassert, MD
• Parth M. Desai, DO
• Rafael A. Cortes, MD

All gastroenterologists in St Augustine →

Other clinicians in Borland Groover Clinic, PA

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Michael E. Herman, DO
• Mark Fleisher, MD
• Grant T. Whittaker, MD
• Jennie S. Johnson, PA
• Harvey G. Phillips, MD
• Alice P. Carter, NP

Clinician information

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

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians