DR. ALEX RAINOW MD
NPI 1255577904
Internal Medicine - Cardiovascular Disease in Sonoma, CA

Q: What is Alex Rainow's NPI number?

The NPI number for Alex Rainow is 1255577904. It was assigned to this individual provider in the NPPES registry on December 31, 2008.

Q: What is Alex Rainow'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 Alex Rainow was last updated on July 27, 2021. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since December 31, 2008PECOS Enrolled

651 1ST ST W STE L, SONOMA, CA 95476(707) 935-1470(707) 935-7817 Get Directions Write a Review

NPPES record last updated: July 27, 2021. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 27, 2021, Dec 1, 2018 (2 updates tracked since 2018).

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About Dr. Alex Rainow Md NPPES

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

DR. ALEX RAINOW MD (NPI 1255577904) is an individual cardiovascular disease provider in Sonoma, California, licensed in California (C154306) and active in the NPI registry since December 2008. He is enrolled in Medicare PECOS, maintains a secondary practice location in Larkspur, and is a graduate of Albany Medical College Of Union University (2007).

NPPES Registry Identity

NPI1255577904

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameDR. ALEX RAINOWCredential: MD

Location Address651 1ST ST W STE LSonoma, CA 95476-7046

Mailing Address2 Bon Air Rd Ste 100Larkspur, CA 94939-1144 · (415) 927-0666 · Fax (415) 927-6159

Phone(707) 935-1470

Fax(707) 935-7817

Sole ProprietorNo

Medical School CMSAlbany Medical College Of Union UniversityGraduated 2007

Enumeration DateDecember 31, 2008

Last NPPES UpdateJuly 27, 20212 updates tracked since enumeration

NPPES CertifiedJuly 27, 2021

✔ NPI 1255577904 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 CA · C154306

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.

651 1ST ST W STE L, Sonoma, CA 95476

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Secondary Practice Location 1

Location 12 Bon Air Rd Ste 100Larkspur, CA 94939-1144 · Phone (415) 927-0666 · Fax (415) 927-6159

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Alex Rainow Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID3072756881

PECOS Enrollment IDI20180618000923

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.

Areas of Expertise CMS Part B claims 23

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.

1,935 services729 patients

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.

433 services417 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.

294 services135 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.

224 services168 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.

150 services150 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.

123 services122 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.

121 services118 patients

Heart rhythm review and interpretation of continous external ekg over 8-15 days 93248

This service involves wearing a device for 8-15 days that continuously records your heart's electrical activity. It helps in identifying irregular heart rhythms. The recorded data is then reviewed and interpreted by a healthcare professional for any abnormalities.

112 services110 patients

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

109 services109 patients

Heart rhythm recording of continous external ekg over 8-15 days 93246

A heart rhythm recording is a non-invasive procedure where a small device, attached externally, monitors your heart's electrical activity for 8-15 days. It helps detect irregular heart rhythms, assess heart rate, and guide treatment decisions. It's safe, painless, and can be done during normal daily activities.

101 services99 patients

Transitional care management services for problem of at least moderate complexity 99495

Transitional care management services focus on coordinating and managing your care after you leave the hospital. For moderate complexity problems, this involves managing your medications, arranging further treatments, and ensuring you have the necessary follow-ups.

49 services47 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.

39 services39 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.

39 services39 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.

30 services30 patients

Ultrasound of heart blood flow, valves and chambers 93320

An ultrasound of your heart, also known as an echocardiogram, is a test that uses sound waves to create detailed images of your heart. It helps doctors check the health of your heart's chambers, valves, and blood flow.

30 services30 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.

30 services30 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.

28 services28 patients

Ultrasound of heart with continuous electrocardiogram (ecg) during rest, exercise and/or drug induced stress with review and report 93351

This procedure involves using ultrasound technology to create images of your heart while you rest, exercise, or undergo drug-induced stress. An ECG continuously monitors your heart's electrical activity. It helps doctors assess heart health and function.

24 services24 patients

Critical care, first 30-74 minutes 99291

Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.

23 services13 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.

19 services19 patients

Heart rhythm recording continous external ekg over more than 48 hours up to 7 days 93242

This procedure involves wearing a device, an external EKG, for up to 7 days to continuously monitor your heart rhythm. It helps detect irregularities that may not occur during a standard EKG. The device is non-invasive and safe.

17 services17 patients

Telephone medical discussion with physician, 21-30 minutes 99443

This service involves a 21-30 minute phone conversation with a physician. It's a chance for you to discuss your health concerns, symptoms or treatment plans. It's similar to an in-person consultation, but conducted over the phone for your convenience and safety.

12 services12 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.

11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95476 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

$142.00 typical visit price

range $63.04 – $187.01

Typical copayment $35.50 (range $15.76 – $46.75)

Most-billed visit code 99204

Established Patient

$77.94 typical visit price

range $21.02 – $153.40

Typical copayment $19.48 (range $5.25 – $38.35)

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.

Patient Reviews User submitted

Reviews are submitted by site visitors and approved by a human moderator before publication.

Review by P. N. Bray August 4, 2025

5/5

Dr. Rainow’s highly professional and particularly accessible, personal practice of Medicine catapults him into a league of peers that is uncommon. He successfully, and without affectation, blends the best of modern, medical knowledge with the simple, bedside manner of an age many attempt to emulate.

Provider 5/5 Office Staff 5/5

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Other Providers at the Same Location NPPES 2

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

MR. STEVEN DON MICKELSON PA

Physician Assistant

651 1ST ST W STE L
SONOMA, CA 95476

Sonoma County (415) 927-0666

KENNETH JOSEPH TOBIN DO

Internal Medicine (Cardiovascular Disease)

651 1ST ST W STE L
SONOMA, CA 95476

Sonoma County (707) 935-1470

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 Alex Rainow's NPI number?

The NPI number for Alex Rainow is 1255577904. It was assigned to this individual provider in the NPPES registry on December 31, 2008.

Where is Alex Rainow located?

Alex Rainow practices at 651 1st St W Ste L, Sonoma, CA 95476. The listed phone number is (707) 935-1470.

What is Alex Rainow's specialty?

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

Is Alex Rainow enrolled in Medicare?

Yes. Alex Rainow is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Alex Rainow was last updated on July 27, 2021. NPI Profile syncs with the weekly NPPES data releases published by CMS.

About Dr. Alex Rainow Md NPPES

NPPES Registry Identity

Specialties & Licenses

Secondary Practice Location 1

Medicare Participation & PECOS CMS

Medicare Enrollment Status

Areas of Expertise CMS Part B claims 23

Physician Visit Costs CMS claims · ZIP area

Patient Reviews User submitted

Review by P. N. Bray · August 4, 2025

Other Providers at the Same Location NPPES 2

Frequently Asked Questions NPPES & CMS

What is Alex Rainow's NPI number?

Where is Alex Rainow located?

What is Alex Rainow's specialty?

Is Alex Rainow enrolled in Medicare?

When was this NPI record last updated?

Review by P. N. Bray August 4, 2025