1. Home
  2. Directory
  3. Massachusetts
  4. Worcester
  5. Internal Medicine
  6. NPI Profile

MR. TZVI JONAS M.D.
NPI 1609197326
Internal Medicine in Worcester, MA

Active since June 16, 2010PECOS EnrolledAccepts Medicare Assignment
119 BELMONT ST, WORCESTER, MA 01605(508) 334-8515(508) 334-6490 Get Directions Write a Review

NPPES record last updated: July 11, 2013. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Mr. Tzvi Jonas M.d. NPPES

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

MR. TZVI JONAS M.D. (NPI 1609197326) is an individual internal medicine provider in Worcester, Massachusetts, licensed in Massachusetts (256968) and active in the NPI registry since June 2010. He is enrolled in Medicare PECOS, is affiliated with Mount Sinai Hospital, and is a graduate of Jefferson Medical College Of Thomas Jefferson University (2010).

NPPES Registry Identity

NPI1609197326
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameMR. TZVI JONASCredential: M.D.
Location Address119 BELMONT STWorcester, MA 01605-2903
Mailing AddressPo Box 415348Boston, MA 02241-5348 · (800) 225-8885 · Fax (508) 334-1977
Phone(508) 334-8515
Fax(508) 334-6490
Sole ProprietorNo
Medical School CMSJefferson Medical College Of Thomas Jefferson UniversityGraduated 2010
Enumeration DateJune 16, 2010
Last NPPES UpdateJuly 11, 2013
✔ NPI 1609197326 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MA · 256968
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
119 BELMONT ST, Worcester, MA 01605
Open in Google Maps ↗

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

Mr. Tzvi Jonas 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 ID7416191994
PECOS Enrollment IDI20210211003468
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

2

Medicare enrollment records show Tzvi Jonas reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Steward Medical Group, Inc
32 mi
Specialist
9 GALEN ST
Watertown, MA 02472
  • Reassigned Medicare billing, Massachusetts enrollment
  • 1,103 clinicians in this Medicare group
NPI 1629398219 (615) 467-4474
Murray Jonas M.D., P.L.L.C.
160 mi
Internal Medicine
1569 E 18TH ST
Brooklyn, NY 11230
  • Reassigned Medicare billing, New York enrollment
  • 2 clinicians in this Medicare group
NPI 1932251774 (718) 375-6500

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 4

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.

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.
1,104 services201 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.
321 services99 patients
Hospital discharge day management, 30 minutes or less 99238
Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.
210 services152 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.
119 services35 patients

Hospital Affiliations CMS Care Compare 2

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

Mount Sinai Hospital

Acute Care Hospitals · New York, NY
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330024
LocationOne Gustave L Levy PlaceNew York, NY 10029 · New York County
Emergency services Birthing friendly

Mount Sinai Beth Israel

Acute Care Hospitals · New York, NY
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330169
LocationFirst Avenue At 16th StreetNew York, NY 10003 · New York County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01605 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
$103.48 typical visit price
range $19.11 – $144.84
Typical copayment $25.87 (range $4.77 – $36.21)
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.

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. PANKAJ ANIL KSHEERSAGAR M.B.B.S.,M.D
Family Medicine
119 BELMONT ST
WORCESTER, MA 01605
Worcester County (508) 334-5571
JASON D YANG
Internal Medicine (Rheumatology)
119 BELMONT ST
WORCESTER, MA 01605
Worcester County (508) 334-5224
SANDRA BELLINI N.P.
Nurse Practitioner (Neonatal, Critical Care)
119 BELMONT ST
WORCESTER, MA 01605
Worcester County (508) 334-6470
BENJAMIN D. HAMAR MD
Obstetrics & Gynecology (Maternal & Fetal Medicine)
119 BELMONT ST
WORCESTER, MA 01605
Worcester County (508) 334-0550
WALTER J ZAWACKI NP
Nurse Practitioner
119 BELMONT ST
WORCESTER, MA 01605
Worcester County (508) 334-8934
CARYN SULLIVAN LCSW
Social Worker
119 BELMONT ST
WORCESTER, MA 01605
Worcester County (508) 334-1000
WAYNE WAYFU CHAN M.D.
Orthopaedic Surgery
119 BELMONT ST
WORCESTER, MA 01605
Worcester County (508) 334-9750
NICHOLAS PAICOS PA STUDENT
Physician Assistant
119 BELMONT ST
WORCESTER, MA 01605
Worcester County (508) 334-8515

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 Tzvi Jonas's NPI number?

The NPI number for Tzvi Jonas is 1609197326. It was assigned to this individual provider in the NPPES registry on June 16, 2010.

Where is Tzvi Jonas located?

Tzvi Jonas practices at 119 Belmont St, Worcester, MA 01605. The listed phone number is (508) 334-8515.

What is Tzvi Jonas's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Tzvi Jonas enrolled in Medicare?

Yes. Tzvi Jonas 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 Tzvi Jonas's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tzvi Jonas reassigns Medicare benefits to 2 organizations: Steward Medical Group, Inc (Watertown, MA) and Murray Jonas M.D., P.L.L.C. (Brooklyn, NY). 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 Tzvi Jonas's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Tzvi Jonas affiliated with any hospitals?

According to CMS data, Tzvi Jonas is affiliated with Mount Sinai Hospital and Mount Sinai Beth Israel.

When was this NPI record last updated?

The NPPES record for Tzvi Jonas was last updated on July 11, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.