Tzvi Jonas, M.D.
NPI 1609197326 · Internal Medicine Physician · Worcester, MA
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tzvi Jonas, M.D. is a Internal Medicine Physician provider in Worcester, MA (NPI 1609197326).
Provider details
- NPI number
- 1609197326
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 256968 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
16 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,754 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 1,104 | $132 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 321 | $88 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 210 | $90 |
| Critical Care, First 30-74 Minutes99291 | 119 | $237 |
Typical Medicare-allowed amounts for these services range $88–$237 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-06-16
- Last updated
- 2013-07-11
Frequently asked questions
- What is Tzvi Jonas's NPI number?
- Tzvi Jonas's National Provider Identifier (NPI) is 1609197326, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tzvi Jonas's specialty?
- Tzvi Jonas is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Tzvi Jonas located?
- Tzvi Jonas's practice location on file with NPPES is 119 Belmont St, Worcester, MA 01605-2903.
- What is Tzvi Jonas's phone number?
- The practice phone number listed in the NPPES registry for Tzvi Jonas is (508) 334-8515.
- Does Tzvi Jonas accept Medicare?
- Tzvi Jonas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tzvi Jonas's NPI active?
- Yes — Tzvi Jonas's NPI (1609197326) is active in the NPPES registry as of the last update on 2013-07-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.