DR. MICHAEL ANDREW BROWN M.D.
NPI 1093719056
Internal Medicine - Cardiovascular Disease in Walnut Creek, CA

Q: What is Michael Brown's NPI number?

The NPI number for Michael Brown is 1093719056. It was assigned to this individual provider in the NPPES registry on June 8, 2005.

Q: What is Michael Brown'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 Michael Brown was last updated on August 11, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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 June 08, 2005PECOS EnrolledAccepts Medicare Assignment

90.1/100

CMS Quality Rating

1450 TREAT BLVD, SUITE 220B, WALNUT CREEK, CA 94597(925) 937-1770(925) 937-0630 Get Directions Write a Review

NPPES record last updated: August 11, 2015. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Dr. Michael Andrew Brown M.d. NPPES

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

DR. MICHAEL ANDREW BROWN M.D. (NPI 1093719056) is an individual cardiovascular disease provider in Walnut Creek, California, licensed in California (G79875) and active in the NPI registry since June 2005. He is enrolled in Medicare PECOS and is a graduate of Yale University School Of Medicine (1993).

NPPES Registry Identity

NPI1093719056

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameDR. MICHAEL ANDREW BROWNCredential: M.D.

Location Address1450 TREAT BLVD, SUITE 220BWalnut Creek, CA 94597-2168

Mailing AddressDept 34929, P.o. Box 39000San Francisco, CA 94139-0001 · (925) 952-2828 · Fax (925) 952-2850

Phone(925) 937-1770

Fax(925) 937-0630

Sole ProprietorNo

Medical School CMSYale University School Of MedicineGraduated 1993

Enumeration DateJune 8, 2005

Last NPPES UpdateAugust 11, 2015

✔ NPI 1093719056 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 · G79875

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.

1450 TREAT BLVD, Walnut Creek, CA 94597

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Other Identifiers 3

Medicare UPING35344CA

OtherP01474563CA · Railroad Medicare

Medicare PINCA114569CA

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. Michael Andrew Brown 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 ID3173525110

PECOS Enrollment IDI20080821000380

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 Michael Brown reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

John Muir Physician Network

0.1 mi

General Practice

1450 TREAT BLVD, SUITE 300
Walnut Creek, CA 94597

Reassigned Medicare billing, California enrollment
650 clinicians in this Medicare group

NPI 1841407665 (925) 296-9872

John Muir Trauma Physicians Billing Service

1.1 mi

Trauma Surgery

1601 YGNACIO VALLEY RD
Walnut Creek, CA 94598

Reassigned Medicare billing, California enrollment
810 clinicians in this Medicare group

NPI 1962551861 (925) 947-5331

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 38

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.

747 services509 patients

Evaluation of implantable heart and blood vessel monitoring system, remote up to 30 days 93297

This service involves remotely monitoring your heart and blood vessel implant system for up to 30 days. Using advanced technology, healthcare professionals can track the device's performance and your health status, ensuring the system is working optimally for your needs.

725 services105 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.

623 services506 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

474 services372 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.

444 services111 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.

363 services328 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.

328 services114 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.

272 services100 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.

268 services264 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.

232 services116 patients

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

171 services165 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.

147 services83 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.

124 services59 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.

116 services116 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.

96 services96 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.

90 services87 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.

88 services67 patients

Evaluation of single, dual, multiple lead or leadless pacemaker system 93288

An evaluation of a pacemaker system examines how well your heart device is working. Single, dual, multiple lead, or leadless refers to the wires that deliver electrical pulses from the pacemaker to your heart. This check ensures your heart is receiving the right amount of support from the device.

81 services63 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.

62 services61 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.

59 services21 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.

58 services58 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.

56 services41 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.

52 services52 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.

52 services52 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.

48 services39 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.

48 services47 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.

38 services38 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

34 services34 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.

32 services31 patients

Evaluation of single, dual, or multiple lead implantable defibrillator system 93289

This procedure evaluates your implantable defibrillator system, which helps regulate your heart rhythm. It can involve single, dual, or multiple lead systems. It's essential to ensure the device is working correctly and adjusting to your heart's needs.

25 services17 patients

Ultrasound of heart, follow-up 93308

25 services25 patients

Ultrasound of heart during rest, exercise and/or drug-induced stress with report 93350

This procedure involves using ultrasound imaging to view your heart at rest, during exercise, and/or under drug-induced stress. It helps assess how well your heart responds to exertion. A report of the findings is provided after the test.

21 services21 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.

18 services17 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.

18 services18 patients

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

14 services14 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.

14 services14 patients

Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221

Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.

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 94597 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

$153.83 typical visit price

range $69.00 – $202.35

Typical copayment $38.45 (range $17.25 – $50.58)

Most-billed visit code 99204

Established Patient

$84.91 typical visit price

range $23.44 – $166.46

Typical copayment $21.22 (range $5.86 – $41.61)

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.

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.

90.1/100

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

Individually scored

Quality

99.11

Promoting Interoperability

100

Improvement Activities

Cost

60.4

Reported Quality Measures

Appropriate Use of DXA Scans in Women Under 65 Years Who Do Not Meet the Risk Factor Profile for Osteoporotic Fracture

Lower rates are better for this measure.

6%33 patients

Breast Cancer Screening

83%252 patients4/55-star benchmark: 93%

Cervical Cancer Screening

65%133 patients3/55-star benchmark: 98%

Colorectal Cancer Screening

67%614 patients4/55-star benchmark: 88%

Controlling High Blood Pressure

78%530 patients4/55-star benchmark: 91%

Coronary Artery Disease (CAD): Beta-Blocker Therapy Prior Myocardial Infarction (MI) or Left Ventricular Systolic Dysfunction (LVEF <= 40%)

97%30 patients4/55-star benchmark: 99%

Diabetes: Eye Exam

28%102 patients2/55-star benchmark: 100%

Diabetes: Hemoglobin A1c (HbA1c) Poor Control (>9%)

Lower rates are better for this measure.

30%102 patients4/55-star benchmark: 91%

Documentation of Current Medications in the Medical Record

95%2,739 patients4/55-star benchmark: 100%

e-Prescribing

98%5,063 patients4/55-star benchmark: 100%

Falls: Screening for Future Fall Risk

53%1,204 patients3/55-star benchmark: 100%

HIV Screening

24%381 patients2/55-star benchmark: 60%

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

49%1,496 patients3/55-star benchmark: 98%

Preventive Care and Screening: Screening for Depression and Follow-Up Plan

44%1,109 patients2/55-star benchmark: 97%

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

Patients screened: 91% · 587 patients

90%587 patients

Provide Patients Electronic Access to Their Health Information

100%1,370 patients5/55-star benchmark: 100%

Statin Therapy for the Prevention and Treatment of Cardiovascular Disease

85%795 patients4/55-star benchmark: 91%

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.

DR. JASLEEN SOHAL M.D.

Family Medicine

1450 TREAT BLVD, SUITE 120B
WALNUT CREEK, CA 94597

Contra Costa County (925) 296-9720

DR. HENNESSEY TSENG M.D.

Internal Medicine (Cardiovascular Disease)

1450 TREAT BLVD, SUITE 220B
WALNUT CREEK, CA 94597

Contra Costa County (925) 937-1770

DR. DEBORAH A GREER M.D.

Family Medicine

1450 TREAT BLVD, SUITE 160
WALNUT CREEK, CA 94597

Contra Costa County (925) 296-9000

DR. RUQAYA FATIMA M.D.

Family Medicine

1450 TREAT BLVD, SUITE 160
WALNUT CREEK, CA 94597

Contra Costa County (925) 286-9000

DR. PRITI H PATEL M.D.

Family Medicine

1450 TREAT BLVD, SUITE 120B
WALNUT CREEK, CA 94597

Contra Costa County (925) 296-9720

DR. DEVORAH E BEN-ZEEV M.D.

Internal Medicine

1450 TREAT BLVD, SUITE 120A
WALNUT CREEK, CA 94597

Contra Costa County (925) 296-9720

DR. KATHLEEN SMITH M.D.

Pediatrics

1450 TREAT BLVD, SUITE 140
WALNUT CREEK, CA 94597

Contra Costa County (925) 296-9770

DR. TESSIE A OKAMURA M.D.

Pediatrics

1450 TREAT BLVD, SUITE 140
WALNUT CREEK, CA 94597

Contra Costa County (925) 296-9770

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 Michael Brown's NPI number?

The NPI number for Michael Brown is 1093719056. It was assigned to this individual provider in the NPPES registry on June 8, 2005.

Where is Michael Brown located?

Michael Brown practices at 1450 Treat Blvd Suite 220B, Walnut Creek, CA 94597. The listed phone number is (925) 937-1770.

What is Michael Brown's specialty?

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

Is Michael Brown enrolled in Medicare?

Yes. Michael Brown 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 Michael Brown's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michael Brown reassigns Medicare benefits to 2 organizations: John Muir Physician Network (Walnut Creek, CA) and John Muir Trauma Physicians Billing Service (Walnut Creek, CA). 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 Michael Brown's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Michael Brown was last updated on August 11, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.