DR. MARTIN J. FREY M.D.
NPI 1164424719
Internal Medicine - Cardiovascular Disease in Miami, FL

Q: What is Martin Frey's NPI number?

The NPI number for Martin Frey is 1164424719. It was assigned to this individual provider in the NPPES registry on August 12, 2005.

Q: What is Martin Frey's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Q: When was this NPI record last updated?

The NPPES record for Martin Frey was last updated on January 4, 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 August 12, 2005PECOS EnrolledAccepts Medicare Assignment

3661 S MIAMI AVE STE 301B, MIAMI, FL 33133(305) 285-5666(866) 947-2942 Get Directions Write a Review

NPPES record last updated: January 4, 2022. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jan 4, 2022, Jul 19, 2019, Jan 4, 2019 (3 updates tracked since 2019).

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About Dr. Martin J. Frey M.d. NPPES

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

DR. MARTIN J. FREY M.D. (NPI 1164424719) is an individual cardiovascular disease provider in Miami, Florida, licensed in Florida (ME55273) and active in the NPI registry since August 2005. He is enrolled in Medicare PECOS, is affiliated with Unitypoint Health - Des Moines Iowa Methodist Medi, and maintains a secondary practice location in Miami.

NPPES Registry Identity

NPI1164424719

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameDR. MARTIN J. FREYCredential: M.D.

Location Address3661 S MIAMI AVE STE 301BMiami, FL 33133-4232

Mailing Address3801 Biscayne Blvd Ste 300Miami, FL 33137-9800 · (305) 571-0620 · Fax (305) 576-8099

Phone(305) 285-5666

Fax(866) 947-2942

Sole ProprietorNo

Medical School CMSOtherGraduated 1983

Enumeration DateAugust 12, 2005

Last NPPES UpdateJanuary 4, 20223 updates tracked since enumeration

✔ NPI 1164424719 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

License✔ Licensed in FL · ME55273

Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

3661 S MIAMI AVE STE 301B, Miami, FL 33133

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Secondary Practice Location 1

Location 13661 S Miami Ave Ste 301BMiami, FL 33133-4232 · Phone (305) 285-5666 · Fax (866) 947-2942

Other Identifiers 3

Medicaid036221200FL

Other08746FL · Bcbs

Other060063671FL · Medicare Rr

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Aspirus Health Plan, Security Health Plan.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. Martin J. Frey M.d. 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 ID3476695701

PECOS Enrollment IDI20251022001722, I20260210000158

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 Martin Frey reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mercy Ekg & Echo Readers, Inc

5.0 mi

Cardiovascular Disease

3663 S MIAMI AVE
Miami, FL 33133

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

NPI 1356433023 (305) 665-4614

Us Pet Imaging LLC

138 mi

Diagnostic Radiology

25097 OLYMPIA AVE, SUITE 104
Punta Gorda, FL 33950

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

NPI 1699944801 (941) 255-1700

Panel Of Electrocardiology Of Sarasota Memorial Hospital

178 mi

Cardiovascular Disease

1700 S TAMIAMI TRL
Sarasota, FL 34239

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

NPI 1013967843 (941) 365-8532

Central Iowa Hospital Corporation

1,327 mi

Family Medicine

800 COLONIAL CIR, STE 200
Norwalk, IA 50211

Reassigned Medicare billing, Iowa enrollment
545 clinicians in this Medicare group

NPI 1659322410 (515) 285-3200

Aspirus Riverview Hospital & Clinics, Inc.

1,389 mi

Rural Health

2031 PEACH ST
Wisconsin Rapids, WI 54494

Reassigned Medicare billing, Wisconsin enrollment
Medicare enrollment name: Aspirus Medical Group, Inc.
415 clinicians in this Medicare group

NPI 1184176059 (715) 423-0122

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 12

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.

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.

131 services131 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.

102 services87 patients

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231

Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.

92 services48 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.

82 services53 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.

62 services61 patients

Ultrasound of heart with color-depicted blood flow, rate and valve function 93325

An ultrasound of the heart, also known as an echocardiogram, uses sound waves to create pictures of your heart. It shows the structure, movement, and blood flow within your heart. This helps assess the heart's health and function, including the valves and rate.

50 services48 patients

3d radiographic procedure 76376

A 3D radiographic procedure is a non-invasive imaging test that helps doctors visualize the internal structures of your body in three dimensions. This advanced technology provides detailed images, aiding in accurate diagnosis and treatment planning. It involves exposure to minimal radiation.

40 services40 patients

Ultrasound of heart blood flow, valves and chambers, follow-up 93321

This procedure, an echocardiogram, uses sound waves to create images of your heart. It aids in assessing your heart's blood flow, chambers, and valves. It's a follow-up procedure, ensuring that your heart is functioning properly post-treatment.

39 services37 patients

Ultrasound of heart with probe in esophagus, with report 93312

This procedure, called a transesophageal echocardiogram, uses a small probe passed into your esophagus to capture detailed images of your heart. The report provides information about your heart's structure and function.

34 services33 patients

Ultrasound of heart, follow-up 93308

A follow-up ultrasound of the heart, also known as an echocardiogram, is a non-invasive test that uses sound waves to create images of your heart. It helps doctors monitor your heart's function and structures after initial assessment or treatment.

25 services25 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.

23 services18 patients

External shock to heart to regulate heart beat 92960

This procedure, known as cardioversion, uses an external electrical shock to restore your heart's normal rhythm. It's typically performed when irregular heartbeats, or arrhythmias, are causing severe symptoms and aren't responding to medications.

13 services13 patients

Hospital Affiliations CMS Care Compare 4

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

Unitypoint Health - Des Moines Iowa Methodist Medi

Acute Care Hospitals · Des Moines, IA

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number160082

Location1200 Pleasant StreetDes Moines, IA 50309 · Polk County

Emergency services Birthing friendly

Sanford Medical Center Bismarck

Acute Care Hospitals · Bismarck, ND

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number350015

Location300 N 7th StBismarck, ND 58506 · Burleigh County

Emergency services Birthing friendly

Aspirus Rhinelander Hospital

Acute Care Hospitals · Rhinelander, WI

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number520019

Location2251 North Shore DrRhinelander, WI 54501 · Oneida County

Emergency services Birthing friendly

Aspirus Wausau Hospital

Acute Care Hospitals · Wausau, WI

4/5 CMS rating

OwnershipProprietary

CMS Certification Number520030

Location333 Pine Ridge BlvdWausau, WI 54401 · Marathon County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 33133 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

$141.56 typical visit price

range $60.92 – $187.05

Typical copayment $35.39 (range $15.23 – $46.76)

Most-billed visit code 99204

Established Patient

$75.86 typical visit price

range $18.99 – $150.24

Typical copayment $18.96 (range $4.74 – $37.56)

Most-billed visit code 99213

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

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

DANIEL EMILIO RAMIREZ MD

Surgery (Vascular Surgery)

3661 S MIAMI AVE STE 301B
MIAMI, FL 33133

Miami-Dade County (786) 428-1059

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 Martin Frey's NPI number?

The NPI number for Martin Frey is 1164424719. It was assigned to this individual provider in the NPPES registry on August 12, 2005.

Where is Martin Frey located?

Martin Frey practices at 3661 S Miami Ave Ste 301B, Miami, FL 33133. The listed phone number is (305) 285-5666.

What is Martin Frey's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Martin Frey enrolled in Medicare?

Yes. Martin Frey 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 Martin Frey's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Martin Frey reassigns Medicare benefits to 5 organizations: Mercy Ekg & Echo Readers, Inc (Miami, FL), Us Pet Imaging LLC (Punta Gorda, FL), Panel Of Electrocardiology Of Sarasota Memorial Hospital (Sarasota, FL), Central Iowa Hospital Corporation (Norwalk, IA) and Aspirus Riverview Hospital & Clinics, Inc. (Wisconsin Rapids, WI). 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 Martin Frey's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Martin Frey accept?

Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan and Security Health Plan list Martin Frey 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 Martin Frey affiliated with any hospitals?

According to CMS data, Martin Frey is affiliated with Unitypoint Health - Des Moines Iowa Methodist Medi, Sanford Medical Center Bismarck, Aspirus Rhinelander Hospital and Aspirus Wausau Hospital.

When was this NPI record last updated?

The NPPES record for Martin Frey was last updated on January 4, 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.