DR. MICHAEL SUNG-CHIEH CHEN M.D.
NPI 1184650954
Internal Medicine - Interventional Cardiology in Rockville, MD

Q: What is Michael Chen's NPI number?

The NPI number for Michael Chen is 1184650954. It was assigned to this individual provider in the NPPES registry on June 24, 2006.

Q: What is Michael Chen'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 Michael Chen was last updated on August 29, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months 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 24, 2006PECOS EnrolledAccepts Medicare Assignment

15225 SHADY GROVE RD, SUITE 201, ROCKVILLE, MD 20850(301) 670-3000(301) 924-0186 Get Directions Write a Review

NPPES record last updated: August 29, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

On this page

About Dr. Michael Sung-chieh Chen M.d. NPPES

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

DR. MICHAEL SUNG-CHIEH CHEN M.D. (NPI 1184650954) is an individual interventional cardiology provider in Rockville, Maryland, licensed in Maryland (D0064279) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Holy Cross Hospital, and is a graduate of Perelman School Of Med At The University Of Pennsylvania (1998).

NPPES Registry Identity

NPI1184650954

Entity TypeIndividualMale

Primary Taxonomy207RI0011X

Provider Legal NameDR. MICHAEL SUNG-CHIEH CHENCredential: M.D.

Location Address15225 SHADY GROVE RD, SUITE 201Rockville, MD 20850-3254

Mailing Address15225 Shady Grove Rd, Suite 201Rockville, MD 20850-3254 · (301) 670-3000 · Fax (301) 924-0186

Phone(301) 670-3000

Fax(301) 924-0186

Sole ProprietorNo

Medical School CMSPerelman School Of Med At The University Of PennsylvaniaGraduated 1998

Enumeration DateJune 24, 2006

Last NPPES UpdateAugust 29, 2025

NPPES CertifiedAugust 29, 2025

✔ NPI 1184650954 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 MD · D0064279

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 D0064279 (MD)

15225 SHADY GROVE RD, Rockville, MD 20850

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Other Identifiers 1

Medicaid410366100MD

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 Sung-chieh Chen 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 ID9335150077

PECOS Enrollment IDI20060510000013

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 Michael Chen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Adventist Physician Services, Inc.

2.8 mi

Physical Medicine & Rehabilitation

820 WEST DIAMOND AVENUE
Gaithersburg, MD 20878

Reassigned Medicare billing, District of Columbia and Maryland enrollments
340 clinicians in this Medicare group

NPI 1376623207 (301) 315-3826

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 29

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.

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.

1,842 services1,230 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.

1,738 services1,159 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.

480 services120 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.

410 services402 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.

222 services222 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.

220 services220 patients

Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional 99211

This service involves an outpatient visit for established patients who may not need direct interaction with a healthcare professional. It could include reviewing test results, monitoring existing conditions, or adjusting treatment plans. It's typically done remotely, ensuring your comfort and convenience.

217 services155 patients

Technetium tc-99m tetrofosmin, diagnostic, per study dose A9502

Technetium Tc-99m Tetrofosmin is a radiopharmaceutical used in diagnostic imaging. It helps highlight areas of concern in the heart by emitting signals captured by a special camera. This assists doctors in detecting heart conditions.

202 services199 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.

131 services84 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.

126 services126 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.

100 services96 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.

84 services80 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 services78 patients

Ultrasound of both sides of head and neck blood flow 93880

An ultrasound of the head and neck blood flow is a safe, non-invasive procedure that uses sound waves to create images of blood vessels. It helps detect abnormalities like blockages or clots, ensuring optimal blood flow.

66 services65 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.

59 services58 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.

53 services48 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.

51 services51 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.

38 services26 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.

28 services19 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.

23 services22 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.

21 services19 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.

20 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.

18 services18 patients

Ultrasound evaluation of heart blood vessel or graft with review by radiologist, initial vessel 92978

This procedure involves using ultrasound technology to examine the first vessel of your heart or graft. A radiologist will review the images. It's a non-invasive way to check the health of your heart's blood vessels.

17 services17 patients

Ultrasound evaluation of heart blood vessel during diagnosis or treatment, initial vessel 93571

This procedure involves using ultrasound technology to examine the first blood vessel of your heart. It helps identify any abnormalities or issues, providing crucial information for diagnosis or treatment. It's a safe, non-invasive process.

16 services16 patients

Ultrasound of leg arteries or artery grafts 93925

An ultrasound of leg arteries or artery grafts is a non-invasive imaging test. It uses high-frequency sound waves to capture live images from inside your body, specifically your leg arteries or grafts. This helps in detecting any blockages or abnormalities.

16 services16 patients

Removal of plaque and blood clot, insertion of stent and/or balloon dilation of single vessel 92941

This procedure involves removing plaque, a substance that can block your blood vessels, and any blood clots. A stent, a tiny tube, may be inserted to keep the vessel open. If necessary, a balloon is inflated to widen the vessel, aiding blood flow.

15 services15 patients

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

15 services15 patients

Complete ultrasound of aorta, vena cava, groin vessels or bypass grafts 93978

This procedure involves using sound waves to create images of your aorta, vena cava, groin vessels, or bypass grafts. It helps to detect abnormalities or blockages, ensuring your blood flows smoothly. It's painless and non-invasive.

12 services12 patients

Hospital Affiliations CMS Care Compare 4

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

Holy Cross Hospital

Acute Care Hospitals · Silver Spring, MD

2/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number210004

Location1500 Forest Glen RoadSilver Spring, MD 20910 · Montgomery County

Birthing friendly

Adventist Healthcare White Oak Medical Center

Acute Care Hospitals · Silver Spring, MD

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210016

Location11890 Healing WaySilver Spring, MD 20904 · Montgomery County

Emergency services Birthing friendly

Adventist Healthcare Shady Grove Medical Center

Acute Care Hospitals · Rockville, MD

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210057

Location9901 Medical Center DriveRockville, MD 20850 · Montgomery County

Emergency services Birthing friendly

Holy Cross Germantown Hospital

Acute Care Hospitals · Germantown, MD

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210065

Location19801 Observation DriveGermantown, MD 20876 · Montgomery County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20850 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

$147.85 typical visit price

range $65.18 – $194.86

Typical copayment $36.96 (range $16.29 – $48.71)

Most-billed visit code 99204

Established Patient

$113.72 typical visit price

range $21.40 – $158.88

Typical copayment $28.43 (range $5.35 – $39.72)

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.

Reported Quality Measures

Care Plan

Percentage of patients aged 65 years and older who have an advance care plan or surrogate decision maker documented in the medical record that an advance care plan was discussed but the patient did not wish or was not able to name a surrogate decision maker…

100%775 patients5/55-star benchmark: 100%

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…

100%842 patients5/55-star benchmark: 100%

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.

ED ASHTAR M.D., F.A.C.P.

Internal Medicine (Hematology & Oncology)

15225 SHADY GROVE RD, SUITE 210
ROCKVILLE, MD 20850

Montgomery County (240) 477-6620

DANIEL J GOLDBERG M.D.

Internal Medicine (Cardiovascular Disease)

15225 SHADY GROVE RD, SUITE 201
ROCKVILLE, MD 20850

Montgomery County (301) 670-3000

RICHARD I WEINSTEIN M.D.

Internal Medicine (Cardiovascular Disease)

15225 SHADY GROVE RD, SUITE 201
ROCKVILLE, MD 20850

Montgomery County (301) 670-3000

MONTGOMERY DERMATOLOGY ASSOCIATES, LLC

Clinic/Center (Medical Specialty)

15225 SHADY GROVE RD, STE. 303
ROCKVILLE, MD 20850

Montgomery County (301) 216-2980

DANIEL LEONARD GRIFFEN III M.D.

Internal Medicine (Cardiovascular Disease)

15225 SHADY GROVE RD, SUITE 201
ROCKVILLE, MD 20850

Montgomery County (301) 670-3000

JIN MOON KANG M.D.

Family Medicine

15225 SHADY GROVE RD, SUITE 102
ROCKVILLE, MD 20850

Montgomery County (301) 330-0661

DR. ALAN STUART CHANALES MD

Internal Medicine (Pulmonary Disease)

15225 SHADY GROVE RD
ROCKVILLE, MD 20850

Montgomery County (301) 330-0200

GREGORY H FISHER M.D.

Internal Medicine (Cardiovascular Disease)

15225 SHADY GROVE RD, SUITE 201
ROCKVILLE, MD 20850

Montgomery County (301) 670-3000

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 Chen's NPI number?

The NPI number for Michael Chen is 1184650954. It was assigned to this individual provider in the NPPES registry on June 24, 2006.

Where is Michael Chen located?

Michael Chen practices at 15225 Shady Grove Rd Suite 201, Rockville, MD 20850. The listed phone number is (301) 670-3000.

What is Michael Chen's specialty?

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

Is Michael Chen enrolled in Medicare?

Yes. Michael Chen 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 Michael Chen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michael Chen reassigns Medicare benefits to Adventist Physician Services, Inc. (Gaithersburg, MD). 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 Michael Chen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Michael Chen affiliated with any hospitals?

According to CMS data, Michael Chen is affiliated with Holy Cross Hospital, Adventist Healthcare White Oak Medical Center, Adventist Healthcare Shady Grove Medical Center and Holy Cross Germantown Hospital.

When was this NPI record last updated?

The NPPES record for Michael Chen was last updated on August 29, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months 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.