Diana Tobler
NPI 1831523836 · Cardiovascular Disease Physician · Larkspur, CA
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Diana Tobler is a Cardiovascular Disease Physician provider in Larkspur, CA (NPI 1831523836).
Provider details
- NPI number
- 1831523836
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
12 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
618 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 130 | $125 |
| 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 | 101 | $17 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 90 | $70 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 63 | $139 |
| Outpatient Heart Rehabilitation With Electrocardiogram (ecg) Monitoring, Quality Health Care Professional Services93798 | 54 | $31 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 40 | 13 |
| Spironolactone | 35 | 18 |
| Furosemide | 34 | 17 |
| Amlodipine Besylate | 33 | 16 |
| Atorvastatin Calcium | 32 | 15 |
| Metoprolol Succinate | 30 | 18 |
| Carvedilol | 29 | 13 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$263 across 3 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
- 2013-08-26
- Last updated
- 2024-09-20
- Certified
- 2024-09-20
Frequently asked questions
- What is Diana Tobler's NPI number?
- Diana Tobler's National Provider Identifier (NPI) is 1831523836, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diana Tobler's specialty?
- Diana Tobler is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Diana Tobler located?
- Diana Tobler's practice location on file with NPPES is 2 Bon Air Rd Ste 100, Larkspur, CA 94939-1144.
- What is Diana Tobler's phone number?
- The practice phone number listed in the NPPES registry for Diana Tobler is (415) 927-0666.
- Does Diana Tobler accept Medicare?
- Diana Tobler is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Diana Tobler's NPI active?
- Yes — Diana Tobler's NPI (1831523836) is active in the NPPES registry as of the last update on 2024-09-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.