DR. ROGER ANTHONY SHAMMAS M.D.
NPI 1346235595
Internal Medicine - Cardiovascular Disease in Grand Rapids, MI

Q: What is Roger Shammas's NPI number?

The NPI number for Roger Shammas is 1346235595. It was assigned to this individual provider in the NPPES registry on September 14, 2005.

Q: What is Roger Shammas'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 Roger Shammas was last updated on March 31, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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 September 14, 2005PECOS EnrolledAccepts Medicare Assignment

1000 E PARIS AVE SE, STE 200, GRAND RAPIDS, MI 49546(616) 949-8554(616) 949-6557 Get Directions Write a Review

NPPES record last updated: March 31, 2008. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Dr. Roger Anthony Shammas M.d. NPPES

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

DR. ROGER ANTHONY SHAMMAS M.D. (NPI 1346235595) is an individual cardiovascular disease provider in Grand Rapids, Michigan, licensed in Michigan (4301070756) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS, is affiliated with Mercy Health Saint Mary's, and is a graduate of Wayne State University School Of Medicine (1991).

NPPES Registry Identity

NPI1346235595

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameDR. ROGER ANTHONY SHAMMASCredential: M.D.

Location Address1000 E PARIS AVE SE, STE 200Grand Rapids, MI 49546-3691

Mailing Address1000 E Paris Ave Se, Ste 200Grand Rapids, MI 49546-3691

Phone(616) 949-8554

Fax(616) 949-6557

Sole ProprietorNo

Medical School CMSWayne State University School Of MedicineGraduated 1991

Enumeration DateSeptember 14, 2005

Last NPPES UpdateMarch 31, 2008

✔ NPI 1346235595 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 MI · 4301070756

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.

1000 E PARIS AVE SE, Grand Rapids, MI 49546

Open in Google Maps ↗

Other Identifiers 2

Medicare UPINF46852MI

Medicare ID-Type UnspecifiedN90310005MI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health 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. Roger Anthony Shammas 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 ID3375528094

PECOS Enrollment IDI20040622001411

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

Advantage Health Saint Mary's Medical Group

4.8 mi

Multi-Specialty

200 JEFFERSON SE
Grand Rapids, MI 49503

Reassigned Medicare billing, Michigan enrollment
737 clinicians in this Medicare group

NPI 1952340911 (616) 685-5000

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 28

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 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.

286 services237 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.

123 services122 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.

101 services51 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.

63 services62 patients

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

50 services49 patients

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

47 services47 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.

37 services37 patients

Evaluation of cardiac rhythm monitor system, remote up to 30 days 93298

This procedure involves remotely monitoring your heart rhythm for up to 30 days. A small device will record your heart's activity, which can be accessed by your healthcare team. This aids in diagnosing any irregularities or issues with your heart function.

36 services29 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.

35 services35 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.

35 services35 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

35 services29 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.

33 services33 patients

Heart muscle strain imaging 93356

Heart muscle strain imaging is a non-invasive test that uses sound waves to create pictures of your heart. It helps doctors evaluate how well your heart muscle is working and detect any damage or disease. This can aid in diagnosing heart conditions and guiding treatment plans.

30 services30 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.

25 services25 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

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.

25 services25 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.

25 services25 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.

24 services23 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.

23 services22 patients

Heart muscle strain imaging 93356

22 services22 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.

20 services20 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.

20 services20 patients

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

15 services15 patients

3d radiographic procedure 76376

14 services14 patients

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

14 services14 patients

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

14 services14 patients

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

14 services14 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

11 services11 patients

Hospital Affiliations CMS Care Compare

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

Mercy Health Saint Mary's

Acute Care Hospitals · Grand Rapids, MI

4/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number230059

Location200 Jefferson Avenue SEGrand Rapids, MI 49503 · Kent County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 49546 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

$126.15 typical visit price

range $54.34 – $166.68

Typical copayment $31.53 (range $13.58 – $41.67)

Most-billed visit code 99204

Established Patient

$68.07 typical visit price

range $17.09 – $135.40

Typical copayment $17.01 (range $4.27 – $33.85)

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 20

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

DR. NAVNEET SINGH MANDER M.D.

Urology

1000 E PARIS AVE SE, SUITE 230
GRAND RAPIDS, MI 49546

Kent County (616) 949-4340

GENENE EVELYN SOBOLESKI RBT

Behavior Technician

1000 E PARIS AVE SE
GRAND RAPIDS, MI 49546

Kent County (844) 854-1116

JANNAT SAKI

Behavior Technician

1000 E PARIS AVE SE
GRAND RAPIDS, MI 49546

Kent County (844) 244-1818

COBY K ODATE

Behavior Technician

1000 E PARIS AVE SE
GRAND RAPIDS, MI 49546

Kent County (844) 244-1818

JAVONTE BRIEON JACKSON RBT

Behavior Technician

1000 E PARIS AVE SE
GRAND RAPIDS, MI 49546

Kent County (844) 854-1116

SAMANTHA PRINCE

Behavior Technician

1000 E PARIS AVE SE
GRAND RAPIDS, MI 49546

Kent County (844) 244-1818

ROY W WADDELL M.D.

Orthopaedic Surgery

1000 E PARIS AVE SE, SUITE 215
GRAND RAPIDS, MI 49546

Kent County (616) 949-8945

SERENA BLASKO BEHAVIOR TECHNICIAN

Behavior Technician

1000 E PARIS AVE SE
GRAND RAPIDS, MI 49546

Kent County (844) 244-1818

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 Roger Shammas's NPI number?

The NPI number for Roger Shammas is 1346235595. It was assigned to this individual provider in the NPPES registry on September 14, 2005.

Where is Roger Shammas located?

Roger Shammas practices at 1000 E Paris Ave SE Ste 200, Grand Rapids, MI 49546. The listed phone number is (616) 949-8554.

What is Roger Shammas's specialty?

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

Is Roger Shammas enrolled in Medicare?

Yes. Roger Shammas 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 Roger Shammas's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Roger Shammas reassigns Medicare benefits to Advantage Health Saint Mary's Medical Group (Grand Rapids, MI). 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 Roger Shammas's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Roger Shammas accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Blue Care Network of Michigan and Blue Cross Blue Shield of Michigan Mutual Insurance Company and 2 other insurers list Roger Shammas 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 Roger Shammas affiliated with any hospitals?

According to CMS data, Roger Shammas is affiliated with Mercy Health Saint Mary's.

When was this NPI record last updated?

The NPPES record for Roger Shammas was last updated on March 31, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.