Jonathan Leffert, M.D.
NPI 1891720785 · Endocrinology, Diabetes & Metabolism Physician · Dallas, TX
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jonathan Leffert, M.D. is a Endocrinology, Diabetes & Metabolism Physician provider in Dallas, TX (NPI 1891720785).
Provider details
- NPI number
- 1891720785
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G7081 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
3,356 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 883 | $133 |
| Blood Glucose (sugar) Test Performed By Hand-Held Instrument82962 | 525 | $3 |
| Hemoglobin A1c Level83036 | 496 | $10 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 471 | $17 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 325 | $94 |
| Continuous Monitoring of Blood Sugar Level in Tissue Fluid Using Sensor Under Skin With Interpretation and Report |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 46 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 397 | 123 |
| Levothyroxine Sodiumbrand: Synthroid | 322 | 84 |
| Semaglutidebrand: Ozempic | 207 | 49 |
| Alendronate Sodium | 182 | 55 |
| Metformin Hcl | 174 | 54 |
| Empagliflozinbrand: Jardiance | 109 | 28 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$831 across 38 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-11
- Last updated
- 2015-04-06
Frequently asked questions
- What is Jonathan Leffert's NPI number?
- Jonathan Leffert's National Provider Identifier (NPI) is 1891720785, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jonathan Leffert's specialty?
- Jonathan Leffert is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Jonathan Leffert located?
- Jonathan Leffert's practice location on file with NPPES is 9301 N Central Expy, Dallas, TX 75231-0806.
- What is Jonathan Leffert's phone number?
- The practice phone number listed in the NPPES registry for Jonathan Leffert is (214) 369-5992.
- Does Jonathan Leffert accept Medicare?
- Jonathan Leffert is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jonathan Leffert's NPI active?
- Yes — Jonathan Leffert's NPI (1891720785) is active in the NPPES registry as of the last update on 2015-04-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.