RAMSES M. THABET NASIF M.D.
NPI 1689014284
Internal Medicine - Cardiovascular Disease in Worcester, MA

Q: What is Ramses Thabet Nasif's NPI number?

The NPI number for Ramses Thabet Nasif is 1689014284. It was assigned to this individual provider in the NPPES registry on June 27, 2013.

Q: What is Ramses Thabet Nasif's specialty?

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

Active since June 27, 2013PECOS EnrolledAccepts Medicare Assignment

123 SUMMER ST, STE #290 N, WORCESTER, MA 01608(508) 368-3130(508) 368-3167 Get Directions Write a Review

NPPES record last updated: September 12, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Sep 12, 2025, Mar 10, 2022, Sep 2, 2020 (3 updates tracked since 2020).

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About Ramses M. Thabet Nasif M.d. NPPES

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

RAMSES M. THABET NASIF M.D. (NPI 1689014284) is an individual cardiovascular disease provider in Worcester, Massachusetts, licensed in Massachusetts (282899) and active in the NPI registry since June 2013. He is enrolled in Medicare PECOS, is affiliated with Heywood Hospital, and is a graduate of Other (2006).

NPPES Registry Identity

NPI1689014284

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameRAMSES M. THABET NASIFCredential: M.D.

Location Address123 SUMMER ST, STE #290 NWorcester, MA 01608-1216

Mailing Address5 Neponset St, Mercantile Center 12th FloorWorcester, MA 01606-2714 · (508) 852-0600

Phone(508) 368-3130

Fax(508) 368-3167

Sole ProprietorYes

Medical School CMSOtherGraduated 2006

Enumeration DateJune 27, 2013

Last NPPES UpdateSeptember 12, 20253 updates tracked since enumeration

NPPES CertifiedSeptember 12, 2025

✔ NPI 1689014284 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

License✔ Licensed in MA · 282899

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.

Also ListedInternal Medicine · Interventional CardiologyTaxonomy 207RI0011X · License 282899 (MA)

123 SUMMER ST, Worcester, MA 01608

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Taro Health.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

Ramses M. Thabet Nasif 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 ID9638597222

PECOS Enrollment IDI20200914002404

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 Ramses Thabet Nasif reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Saint Vincent Physician Services, Inc.

Same address

Family Medicine

123 SUMMER ST STE 279
Worcester, MA 01608

Reassigned Medicare billing, Massachusetts enrollment
197 clinicians in this Medicare group

NPI 1013997329 (508) 363-6040

Reliant Medical Group, Inc

2.3 mi

Family Medicine

5 NEPONSET ST
Worcester, MA 01606

Reassigned Medicare billing, Massachusetts enrollment
718 clinicians in this Medicare group

NPI 1720017528 (508) 852-0600

Signature Healthcare Medical Group Inc

40 mi

Internal Medicine

110 LIBERTY ST
Brockton, MA 02301

Reassigned Medicare billing, Massachusetts enrollment
409 clinicians in this Medicare group

NPI 1508804949 (508) 894-0400

Mass General Brigham Medical Group Northern Massachusetts Inc

49 mi

Emergency Medicine

81 HIGHLAND AVE
Salem, MA 01970

Reassigned Medicare billing, Massachusetts enrollment
994 clinicians in this Medicare group

NPI 1588606123 (978) 354-4173

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 17

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.

526 services380 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.

400 services217 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.

239 services160 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.

149 services133 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.

107 services99 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.

105 services86 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.

64 services13 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.

59 services59 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.

54 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.

48 services48 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.

36 services13 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.

34 services32 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.

34 services34 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.

24 services18 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.

22 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

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.

14 services12 patients

Hospital Affiliations CMS Care Compare 3

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

Heywood Hospital

Acute Care Hospitals · Gardner, MA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220095

Location242 Green StreetGardner, MA 01440 · Worcester County

Emergency services Birthing friendly

Umass Memorial Medical Center/University Campus

Acute Care Hospitals · Worcester, MA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220163

Location55 Lake Avenue NorthWorcester, MA 01655 · Worcester County

Emergency services Birthing friendly

St Vincent Hospital

Acute Care Hospitals · Worcester, MA

2/5 CMS rating

OwnershipProprietary

CMS Certification Number220176

Location123 Summer StreetWorcester, MA 01608 · Worcester County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01608 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

$134.47 typical visit price

range $58.86 – $177.36

Typical copayment $33.61 (range $14.71 – $44.34)

Most-billed visit code 99204

Established Patient

$73.22 typical visit price

range $19.11 – $144.84

Typical copayment $18.30 (range $4.77 – $36.21)

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.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Automatic external defibrillator, with integrated electrocardiogram analysis, garment type K0606

DME-Other DME · category DE013N

1 supplier14 claims14 services$2,000.01 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

MADAIAH LOKESHWARI M.D.

Hospitalist

123 SUMMER ST
WORCESTER, MA 01608

Worcester County (508) 363-6849

DR. MADHAV SHARMA MD

Internal Medicine

123 SUMMER ST
WORCESTER, MA 01608

Worcester County (508) 363-5438

YESHASWINI KATKOORI MD

Student in an Organized Health Care Education/Training Program

123 SUMMER ST
WORCESTER, MA 01608

Worcester County (508) 363-5000

DANIELLE MAY PELOQUIN

Nurse Anesthetist, Certified Registered

123 SUMMER ST
WORCESTER, MA 01608

Worcester County (508) 363-5000

DR. YAYAN CHEN M.D.

Pathology (Anatomic Pathology & Clinical Pathology)

123 SUMMER ST
WORCESTER, MA 01608

Worcester County (508) 363-6049

FARRICY & KRAFT LLP

Obstetrics & Gynecology (Obstetrics)

123 SUMMER ST, SUITE 560
WORCESTER, MA 01608

Worcester County (508) 363-6100

KEITH A BEALS PA

Physician Assistant

123 SUMMER ST
WORCESTER, MA 01608

Worcester County (508) 363-5000

ANNE E COVINO CNM

Midwife

123 SUMMER ST
WORCESTER, MA 01608

Worcester County (508) 363-5000

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 Ramses Thabet Nasif's NPI number?

The NPI number for Ramses Thabet Nasif is 1689014284. It was assigned to this individual provider in the NPPES registry on June 27, 2013.

Where is Ramses Thabet Nasif located?

Ramses Thabet Nasif practices at 123 Summer St Ste #290 N, Worcester, MA 01608. The listed phone number is (508) 368-3130.

What is Ramses Thabet Nasif's specialty?

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

Is Ramses Thabet Nasif enrolled in Medicare?

Yes. Ramses Thabet Nasif 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 Ramses Thabet Nasif's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ramses Thabet Nasif reassigns Medicare benefits to 4 organizations: Saint Vincent Physician Services, Inc. (Worcester, MA), Reliant Medical Group, Inc (Worcester, MA), Signature Healthcare Medical Group Inc (Brockton, MA) and Mass General Brigham Medical Group Northern Massachusetts Inc (Salem, MA). 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 Ramses Thabet Nasif's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Ramses Thabet Nasif accept?

Health plans from Taro Health list Ramses Thabet Nasif 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 Ramses Thabet Nasif affiliated with any hospitals?

According to CMS data, Ramses Thabet Nasif is affiliated with Heywood Hospital, Umass Memorial Medical Center/University Campus and St Vincent Hospital.

When was this NPI record last updated?

The NPPES record for Ramses Thabet Nasif was last updated on September 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.