WILLEMIJNTJE ALEXANDRA HOOGERWERF MD
NPI 1548348089
Internal Medicine - Gastroenterology in St Augustine, FL

Q: What is Willemijntje Hoogerwerf's NPI number?

The NPI number for Willemijntje Hoogerwerf is 1548348089. It was assigned to this individual provider in the NPPES registry on November 1, 2006.

Q: What is Willemijntje Hoogerwerf's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Active since November 01, 2006PECOS EnrolledAccepts Medicare Assignment

77.15/100

CMS Quality Rating

100 WHETSTONE PL, SUITE 105, ST AUGUSTINE, FL 32086(904) 829-9557(904) 829-9125 Get Directions Write a Review

NPPES record last updated: May 24, 2011. Verified against the NPPES registry weekly; last sync: November 01, 2026.

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About Willemijntje Alexandra Hoogerwerf Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WILLEMIJNTJE ALEXANDRA HOOGERWERF MD (NPI 1548348089) is an individual gastroenterology provider in St Augustine, Florida, licensed in Florida (ME 104402) and active in the NPI registry since November 2006. She is enrolled in Medicare PECOS, is affiliated with Flagler Hospital, and is a graduate of Other (1992).

NPPES Registry Identity

NPI1548348089

Entity TypeIndividualFemale

Primary Taxonomy207RG0100X

Provider Legal NameWILLEMIJNTJE ALEXANDRA HOOGERWERFCredential: MD

Location Address100 WHETSTONE PL, SUITE 105St Augustine, FL 32086-5774

Mailing Address4800 Belfort RdJacksonville, FL 32256-6004 · (904) 398-3262 · Fax (904) 265-4807

Phone(904) 829-9557

Fax(904) 829-9125

Sole ProprietorNo

Medical School CMSOtherGraduated 1992

Enumeration DateNovember 1, 2006

Last NPPES UpdateMay 24, 2011

✔ NPI 1548348089 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in FL · ME 104402

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

100 WHETSTONE PL, St Augustine, FL 32086

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Other Identifiers 3

Other1486FFL · Bcbs

Medicaid001953200FL

Medicare PINDC509ZFL

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include AvMed, Florida Blue (BlueCross BlueShield FL), Florida Blue HMO (a BlueCross BlueShield FL company).Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Willemijntje Alexandra Hoogerwerf Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5597766980

PECOS Enrollment IDI20100608000887

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Willemijntje Hoogerwerf reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Borland Groover Clinic, PA

31 mi

Gastroenterology

4800 BELFORT RD
Jacksonville, FL 32256

Reassigned Medicare billing, Florida enrollment
121 clinicians in this Medicare group

NPI 1881644912 (904) 398-7205

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 16

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Injection, vedolizumab, intravenous, 1 mg J3380

Vedolizumab is a medication given via injection. It's used to treat certain bowel conditions (such as Crohn's disease, ulcerative colitis) by reducing inflammation. It works by blocking a certain protein that causes this inflammation.

6,300 services12 patients

Injection, infliximab, excludes biosimilar, 10 mg J1745

Infliximab is a medication given via injection to treat certain autoimmune conditions. It works by blocking the action of a substance in your body that causes inflammation. Each dose is based on your medical condition and response to treatment.

2,670 services15 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

586 services413 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

240 services86 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

170 services170 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

143 services142 patients

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

143 services143 patients

Biopsy of large bowel using a flexible endoscope 45380

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

122 services122 patients

Infusion, normal saline solution, 250 cc J7050

An infusion of normal saline solution, 250 cc, involves administering a sterile saltwater solution into your body through a vein, usually in your arm. This helps to replenish fluids, maintain hydration, and balance electrolytes in your body.

86 services35 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

73 services68 patients

New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more 99202

This service involves an initial visit to the doctor's office or other outpatient setting. It typically lasts between 15-29 minutes. The doctor will review your medical history, conduct a physical examination, and discuss your health concerns. It's a chance to establish your health baseline and address any immediate medical issues.

65 services65 patients

Administration of chemotherapy into vein, 1 hour or less 96413

Chemotherapy is a treatment that uses drugs to destroy cancer cells. When administered into a vein, it's often through an IV. This procedure usually lasts 1 hour or less. You may feel a slight pinch as the needle is inserted, but it's generally painless.

63 services29 patients

Administration of chemotherapy into vein, each additional hour 96415

Chemotherapy is a treatment method that uses drugs to destroy cancer cells. The drugs are administered into a vein, usually in the arm. Each additional hour of chemotherapy allows for more of the medication to enter your bloodstream to fight against the cancer cells.

44 services15 patients

Colorectal cancer screening; colonoscopy on individual at high risk G0105

Colorectal cancer screening, specifically a colonoscopy, is a preventive measure for those at high risk. A thin, flexible tube with a camera inspects the colon to spot any abnormal growths. This test helps detect potential issues early, enhancing the effectiveness of treatment.

28 services28 patients

Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk G0121

Colorectal cancer screening, such as a colonoscopy, is a preventive measure to detect early signs of cancer in the large intestine. For individuals not at high risk, it's typically recommended at age 50. A small, flexible tube with a camera is used to examine your colon. It's a safe, effective way to catch issues early.

23 services23 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

18 services18 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Flagler Hospital

Acute Care Hospitals · Saint Augustine, FL

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number100090

Location400 Health Park BlvdSaint Augustine, FL 32086 · St. Johns County

Emergency services Birthing friendly

Florida Hospital Flagler

Acute Care Hospitals · Palm Coast, FL

3/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number100118

Location60 Memorial Medical PkwyPalm Coast, FL 32164 · Flagler County

Emergency services

Adventhealth Palm Coast Parkway

Acute Care Hospitals · Palm Coast, FL

OwnershipVoluntary non-profit - Private

CMS Certification Number100363

Location1 Adventhealth WayPalm Coast, FL 32137 · Flagler County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 32086 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$130.04 typical visit price

range $56.00 – $171.84

Typical copayment $32.51 (range $14.00 – $42.96)

Most-billed visit code 99204

Established Patient

$99.16 typical visit price

range $17.57 – $139.16

Typical copayment $24.79 (range $4.39 – $34.79)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

77.15/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

65.95

Promoting Interoperability

Improvement Activities

Cost

61.22

Reported Quality Measures

Closing the Referral Loop: Receipt of Specialist Report

Percentage of patients with referrals, regardless of age, for which the referring provider receives a report from the provider to whom the patient was referred

53%34 patients3/55-star benchmark: 95%

Colorectal Cancer Screening

Percentage of adults 50-75 years of age who had appropriate screening for colorectal cancer

82%1,171 patients4/55-star benchmark: 85%

Documentation of Current Medications in the Medical Record

Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter.

90%2,840 patients4/55-star benchmark: 100%

e-Prescribing

At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.

93%2,216 patients4/55-star benchmark: 100%

Health Information Exchange

The MIPS eligible clinician that transitions or refers their patient to another setting of care or health care clinician (1) uses CEHRT to create a summary of care record; and (2) electronically transmits such summary to a receiving health care clinician for…

89%35 patients4/55-star benchmark: 98%

Medication Reconciliation

The MIPS eligible clinician performs medication reconciliation for at least one transition of care in which the patient is transitioned into the care of the MIPS eligible clinician.

91%941 patients4/55-star benchmark: 100%

Patient-Specific Education

The MIPS eligible clinician must use clinically relevant information from CEHRT to identify patient-specific educational resources and provide access to those materials to at least one unique patient seen by the MIPS eligible clinician.

75%1,792 patients4/55-star benchmark: 100%

Pneumococcal Vaccination Status for Older Adults

Percentage of patients 65 years of age and older who have ever received a pneumococcal vaccine

0%819 patients1/55-star benchmark: 90%

Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan

Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…

17%1,718 patients1/55-star benchmark: 97%

Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention

Percentage of patients aged 18 years and older who were screened for tobacco use one or more times within 24 months AND who received tobacco cessation intervention if identified as a tobacco user

Patients screenedForUse: 28% · 758 patients

24%758 patients1/55-star benchmark: 98%

Provide Patient Access

At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold…

95%1,792 patients4/55-star benchmark: 100%

Secure Messaging

For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of CEHRT to the patient (or the patient-authorized representative), or in response to a secure…

6%1,792 patients1/55-star benchmark: 79%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

PATRICK ZIEMANN-GIMMEL MD

Anesthesiology

100 WHETSTONE PL
ST AUGUSTINE, FL 32086

St. Johns County (904) 819-4478

LIGHTHOUSE PEDIATRICS PLLC

Pediatrics

100 WHETSTONE PL, SUITE 211
ST AUGUSTINE, FL 32086

St. Johns County (904) 342-7648

WILLIAM J OKTAVEC MD PA

Ophthalmology

100 WHETSTONE PL, SUITE 106
ST AUGUSTINE, FL 32086

St. Johns County (904) 826-3937

BERNARD R BORBELY MD

Internal Medicine (Pulmonary Disease)

100 WHETSTONE PL, SUITE208
ST AUGUSTINE, FL 32086

St. Johns County (904) 819-6800

DR. WALID OMAR MD

Family Medicine

100 WHETSTONE PL, SUITE 204
ST AUGUSTINE, FL 32086

St. Johns County (217) 720-3144

BETHANY ANN BROWN ARNP

Nurse Practitioner

100 WHETSTONE PL
SAINT AUGUSTINE, FL 32086

St. Johns County (904) 746-1095

FARGHALY MEDICAL, PLLC

Family Medicine

100 WHETSTONE PL, SUITE 208
ST AUGUSTINE, FL 32086

St. Johns County (904) 826-7932

DR. WILLIAM FRANCIS FOODY JR. M.D.

Internal Medicine (Gastroenterology)

100 WHETSTONE PL, STE 105
ST AUGUSTINE, FL 32086

St. Johns County (904) 829-9557

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Willemijntje Hoogerwerf's NPI number?

The NPI number for Willemijntje Hoogerwerf is 1548348089. It was assigned to this individual provider in the NPPES registry on November 1, 2006.

Where is Willemijntje Hoogerwerf located?

Willemijntje Hoogerwerf practices at 100 Whetstone Pl Suite 105, St Augustine, FL 32086. The listed phone number is (904) 829-9557.

What is Willemijntje Hoogerwerf's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Willemijntje Hoogerwerf enrolled in Medicare?

Yes. Willemijntje Hoogerwerf is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Willemijntje Hoogerwerf's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Willemijntje Hoogerwerf reassigns Medicare benefits to Borland Groover Clinic, PA (Jacksonville, FL). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Willemijntje Hoogerwerf's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Willemijntje Hoogerwerf accept?

Health plans from AvMed, Florida Blue (BlueCross BlueShield FL) and Florida Blue HMO (a BlueCross BlueShield FL company) list Willemijntje Hoogerwerf as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Willemijntje Hoogerwerf affiliated with any hospitals?

According to CMS data, Willemijntje Hoogerwerf is affiliated with Flagler Hospital, Florida Hospital Flagler and Adventhealth Palm Coast Parkway.

When was this NPI record last updated?

The NPPES record for Willemijntje Hoogerwerf was last updated on May 24, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.