DR. MERRILL A. KROLICK D.O
NPI 1417919499
Internal Medicine - Interventional Cardiology in Largo, FL

Q: What is Merrill Krolick's NPI number?

The NPI number for Merrill Krolick is 1417919499. It was assigned to this individual provider in the NPPES registry on April 5, 2006.

Q: What is Merrill Krolick's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Interventional Cardiology, with taxonomy code 207RI0011X.

Q: When was this NPI record last updated?

The NPPES record for Merrill Krolick was last updated on February 9, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.

Active since April 05, 2006PECOS EnrolledAccepts Medicare Assignment

1345 W BAY DR, #101, LARGO, FL 33770(727) 581-3550(727) 586-6190 Get Directions Write a Review

NPPES record last updated: February 9, 2022. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Feb 9, 2022, Aug 29, 2019, Aug 17, 2016 (3 updates tracked since 2016).

On this page

About Dr. Merrill A. Krolick D.o NPPES

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

DR. MERRILL A. KROLICK D.O (NPI 1417919499) is an individual interventional cardiology provider in Largo, Florida, licensed in Florida (OS5078) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, is affiliated with Memorial Regional Hospital, and is a graduate of New York College Of Osteo Medicine Of New York Institute Of Technology (1985).

NPPES Registry Identity

NPI1417919499

Entity TypeIndividualMale

Primary Taxonomy207RI0011X

Provider Legal NameDR. MERRILL A. KROLICKCredential: D.O

Location Address1345 W BAY DR, #101Largo, FL 33770-2282

Mailing Address1345 W Bay Dr, Suite 101Largo, FL 33770-2282 · (727) 581-3550 · Fax (727) 586-6190

Phone(727) 581-3550

Fax(727) 586-6190

Sole ProprietorNo

Medical School CMSNew York College Of Osteo Medicine Of New York Institute Of TechnologyGraduated 1985

Enumeration DateApril 5, 2006

Last NPPES UpdateFebruary 9, 20223 updates tracked since enumeration

✔ NPI 1417919499 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Interventional CardiologyAllopathic & Osteopathic Physicians

Taxonomy Code207RI0011X

License✔ Licensed in FL · OS5078

Definition

An area of medicine within the subspecialty of cardiology, which uses specialized imaging and other diagnostic techniques to evaluate blood flow and pressure in the coronary arteries and chambers of the heart and uses technical procedures and medications to treat abnormalities that impair the function of the cardiovascular system.

Also ListedInternal Medicine · Cardiovascular DiseaseTaxonomy 207RC0000X · License OS5078 (FL)

1345 W BAY DR, Largo, FL 33770

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Other Identifiers 1

Medicaid046156300FL

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Superior HealthPlan, Ambetter Health, AvMed and more.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

Dr. Merrill A. Krolick D.o 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 ID7315901212

PECOS Enrollment IDI20041118001039

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 Reassignments

Medicare enrollment records show Merrill Krolick reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

West Florida Cardiology Network, LLC

7.5 mi

Cardiovascular Disease

6006 49TH ST N, SUITE 200
Saint Petersburg, FL 33709

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

NPI 1801198023 (727) 490-2100

Cardiology Interpreters Inc

180 mi

Technician, Cardiology

11651 CENTRAL PKWY STE 106
Jacksonville, FL 32224

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

NPI 1477887149 (904) 396-2342

Memorial Ekg Associates PA

198 mi

Cardiovascular Disease

1700 NW 66TH AVE, SUITE 117
Plantation, FL 33313

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

NPI 1063625754 (954) 726-1808

Miramar Ekg Readers

199 mi

Cardiovascular Disease

1901 SW 172ND AVE, EKG READERS PANEL
Miramar, FL 33029

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

NPI 1942254057 (954) 726-1808

Ekg Associates Inc

201 mi

Cardiovascular Disease

703 N FLAMINGO RD, - EKG READERS PANEL
Pembroke Pines, FL 33028

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

NPI 1730190190 (954) 726-1808

Hollywood Medical Center Ekg Associates PA

207 mi

Cardiovascular Disease

3600 WASHINGTON ST, - EKG READERS PANEL
Hollywood, FL 33021

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

NPI 1124127378 (954) 726-1808

Cardiac & Veinworx LLC

207 mi

Cardiovascular Disease

3702 WASHINGTON ST, SUITE 305
Hollywood, FL 33021

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

NPI 1134516974 (954) 983-8910

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 30

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.

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.

605 services317 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

215 services106 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010

A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.

190 services171 patients

Injection, regadenoson, 0.1 mg J2785

Regadenoson injection, 0.1 mg, is a medication used to help visualize the heart during a stress test. It works by increasing blood flow in the arteries of the heart. It's injected into a vein and is generally well-tolerated.

176 services46 patients

Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes 99152

This procedure involves a doctor administering a medication to reduce your consciousness during a procedure. This helps in managing discomfort and anxiety. The initial application lasts for 15 minutes and is for individuals aged 5 years or older.

174 services152 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

166 services144 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

124 services95 patients

Nuclear medicine studies of heart muscle at rest and with stress and spect 78452

Nuclear medicine studies of the heart involve two parts: rest and stress. During rest, images are taken of your heart at ease. During stress, images are taken after exercise or medication-induced stress. SPECT is a special imaging technique providing 3D pictures of your heart, helping identify any issues.

79 services77 patients

Insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist 93458

This procedure involves placing a tube into your left lower heart chamber and coronary artery. It helps doctors diagnose heart conditions by allowing them to view these areas in detail. A radiologist will review the images to ensure accurate diagnosis.

79 services74 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.

75 services75 patients

Remote monitoring of pulmonary artery pressure sensor, up to 30 days 93264

Remote monitoring of pulmonary artery pressure is a procedure where a sensor, placed in your lung artery, transmits data about your heart's function for up to 30 days. This helps doctors monitor your heart health remotely, ensuring timely intervention if needed.

71 services11 patients

Evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days 93296

This procedure involves remotely monitoring your pacemaker or implantable defibrillator system. Over a 90-day period, we check the device's performance and your heart's activity. This helps ensure the device is functioning properly and providing the best possible support for your heart health.

65 services24 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician 93018

An exercise or drug-induced heart stress test with ECG is a procedure to assess how your heart functions under stress. It can involve exercising or medication to make your heart work harder while an ECG records its activity. A physician reviews the results.

57 services56 patients

Technetium tc-99m sestamibi, diagnostic, per study dose A9500

Technetium Tc-99m Sestamibi is a diagnostic test used to create images of your heart or breast tissues. It involves a safe radioactive substance injection that helps doctors to detect any abnormalities or changes in these tissues.

52 services28 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.

49 services33 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician 93016

An exercise or drug-induced heart stress test with ECG involves monitoring your heart's activity while it's under stress, either from exercise or medication. A doctor supervises the entire procedure to ensure safety and accuracy in results. This test helps detect heart problems.

42 services41 patients

Insertion of stents with balloon dilation of coronary artery or branch, single artery or branch 92928

This procedure involves placing a small, mesh tube (stent) in your coronary artery to keep it open. A balloon is used to expand the stent and artery, improving blood flow to your heart. It's typically done for a single artery or branch.

40 services32 patients

Evaluation of single, dual, or multiple lead implantable defibrillator system, remote up to 90 days 93295

This procedure involves remotely monitoring your implantable defibrillator system, which can have single, dual, or multiple leads. Over a period of up to 90 days, the system's performance is evaluated to ensure it's working properly and providing the necessary heart rhythm support.

40 services14 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) 93017

An exercise or drug-induced heart stress test with an ECG checks how your heart responds to stress. You'll either exercise on a treadmill or be given medication to stress your heart. An ECG then captures your heart's activity, helping detect any issues.

39 services38 patients

Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days 93294

This procedure evaluates your pacemaker system remotely for up to 90 days. It checks whether single, dual, multiple lead, or leadless pacemakers are working properly. It's a safe, convenient way to ensure your heart device is functioning optimally.

34 services12 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

29 services29 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

24 services24 patients

Programming of dual lead pacemaker system 93280

Programming of a dual lead pacemaker system is a procedure to adjust your heart's pacemaker settings. This process involves a small device, called a programmer, that communicates with your pacemaker to ensure it's working optimally for your heart's needs.

21 services14 patients

Insertion of tube in right and left heart chambers and coronary artery for diagnosis with review by radiologist 93460

This procedure involves placing a tube into the heart chambers and coronary artery. It helps diagnose heart conditions. A radiologist reviews the images obtained. It's a standard, safe procedure performed by experienced medical professionals.

20 services20 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician 93015

An exercise or drug-induced heart stress test with ECG is a procedure performed by a doctor to assess how your heart responds to exertion. It involves monitoring your heart's electrical activity while you exercise or after medication is given to mimic exercise effects.

17 services17 patients

Insertion of tube in left lower heart chamber, coronary artery and bypass graft for diagnosis with review by radiologist 93459

This procedure involves placing a tube into your left lower heart chamber, coronary artery, and bypass graft. It's done for diagnostic purposes and is carefully reviewed by a radiologist. This helps determine the health of your heart and arteries, aiding in future treatment plans.

16 services14 patients

Ultrasound evaluation of blood vessel with review by radiologist, initial vessel 37252

This procedure involves using ultrasound, a safe imaging technique, to examine your blood vessels. The images are then reviewed by a radiologist, a doctor specialized in medical imaging. The process helps identify any abnormalities in your initial vessel.

14 services12 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.

14 services14 patients

Review by radiologist of abdominal aorta image 75625

This is a procedure where a radiologist, a doctor specialized in medical imaging, examines an image of your abdominal aorta. The abdominal aorta is the large blood vessel that carries blood to your lower body. The radiologist checks for any abnormalities to ensure your overall vascular health.

12 services12 patients

Heart rhythm review, and interpretation of continous external ekg over more than 48 hours up to 7 days 93244

A heart rhythm review involves monitoring your heart's electrical activity for more than 48 hours up to 7 days. Using a device called an external EKG, doctors can track your heartbeats to detect irregularities and help diagnose heart conditions.

12 services12 patients

Hospital Affiliations CMS Care Compare 3

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

Memorial Regional Hospital

Acute Care Hospitals · Hollywood, FL

3/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number100038

Location3501 Johnson StHollywood, FL 33021 · Broward County

Emergency services Birthing friendly

Morton Plant Hospital

Acute Care Hospitals · Clearwater, FL

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number100127

Location300 Pinellas StClearwater, FL 33756 · Pinellas County

Emergency services Birthing friendly

Hca Florida Largo Hospital

Acute Care Hospitals · Largo, FL

2/5 CMS rating

OwnershipProprietary

CMS Certification Number100248

Location201 14th St SWLargo, FL 33770 · Pinellas County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 33770 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.

Other Providers at the Same Location NPPES 13

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

OPTUMCARE FLORIDA, LLC

Non-Pharmacy Dispensing Site

1345 W BAY DR, SUITE 202
LARGO, FL 33770

Pinellas County (727) 559-0895

BARRY L. WINTON MD

Thoracic Surgery (Cardiothoracic Vascular Surgery)

1345 W BAY DR, STE 304
LARGO, FL 33770

Pinellas County (727) 490-5040

WOOLDRIDGE MEDICAL GROUP, LLC

Specialist

1345 W BAY DR, SUITE 405
LARGO, FL 33770

Pinellas County (727) 213-9888

STANLEY S MOLES & ASSOCIATES MD'S PA

Radiology (Nuclear Radiology)

1345 W BAY DR, STE 301
LARGO, FL 33770

Pinellas County (727) 581-6984

MRS. MARGARET A LEINBACH PA-C

Physician Assistant

1345 W BAY DR, SUITE 405
LARGO, FL 33770

Pinellas County (727) 587-6999

ABILITY HEALTH SERVICES AND REHABILITATION LP

Clinic/Center (Rehabilitation)

1345 W BAY DR
LARGO, FL 33770

Pinellas County (407) 688-0070

ALECIA HOWARD

Physical Therapist

1345 W BAY DR
LARGO, FL 33770

Pinellas County (407) 688-0070

VICTORIA ANN KENNEDY PA-C

Physician Assistant (Medical)

1345 W BAY DR, SUITE 301
LARGO, FL 33770

Pinellas County (727) 581-6984

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 Merrill Krolick's NPI number?

The NPI number for Merrill Krolick is 1417919499. It was assigned to this individual provider in the NPPES registry on April 5, 2006.

Where is Merrill Krolick located?

Merrill Krolick practices at 1345 W Bay Dr #101, Largo, FL 33770. The listed phone number is (727) 581-3550.

What is Merrill Krolick's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Interventional Cardiology, with taxonomy code 207RI0011X.

Is Merrill Krolick enrolled in Medicare?

Yes. Merrill Krolick 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 organizations bill Medicare for Merrill Krolick's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Merrill Krolick reassigns Medicare benefits to 7 organizations: West Florida Cardiology Network, LLC (Saint Petersburg, FL), Cardiology Interpreters Inc (Jacksonville, FL), Memorial Ekg Associates PA (Plantation, FL), Miramar Ekg Readers (Miramar, FL), Ekg Associates Inc (Pembroke Pines, FL) and 2 more organizations, listed in the Medicare section above. Each 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 Merrill Krolick's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Merrill Krolick accept?

Health plans from Ambetter Health, Ambetter from Superior HealthPlan, AvMed, Florida Blue (BlueCross BlueShield FL) and Florida Blue HMO (a BlueCross BlueShield FL company) and 3 other insurers list Merrill Krolick 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 Merrill Krolick affiliated with any hospitals?

According to CMS data, Merrill Krolick is affiliated with Memorial Regional Hospital, Morton Plant Hospital and Hca Florida Largo Hospital.

When was this NPI record last updated?

The NPPES record for Merrill Krolick was last updated on February 9, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.