DIANA TOBLER
NPI 1831523836
Internal Medicine - Cardiovascular Disease in Larkspur, CA

Q: What is Diana Tobler's NPI number?

The NPI number for Diana Tobler is 1831523836. It was assigned to this individual provider in the NPPES registry on August 26, 2013.

Q: What is Diana Tobler's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Diana Tobler was last updated on September 20, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.

Active since August 26, 2013PECOS Enrolled

2 BON AIR RD STE 100, LARKSPUR, CA 94939(415) 927-0666(415) 927-6168 Get Directions Write a Review

NPPES record last updated: September 20, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 20, 2024, Sep 13, 2024 (2 updates tracked since 2024).

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About Diana Tobler NPPES

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

DIANA TOBLER (NPI 1831523836) is an individual cardiovascular disease provider in Larkspur, California, licensed in California (A154056) and active in the NPI registry since August 2013. She is enrolled in Medicare PECOS and is a graduate of Oregon Health Sciences University School Of Medicine (2016).

NPPES Registry Identity

NPI1831523836

Entity TypeIndividualFemale

Primary Taxonomy207RC0000X

Provider Legal NameDIANA TOBLER

Location Address2 BON AIR RD STE 100Larkspur, CA 94939-1144

Mailing Address2 Bon Air Rd Ste 100Larkspur, CA 94939-1144 · (415) 927-0666 · Fax (415) 927-6168

Phone(415) 927-0666

Fax(415) 927-6168

Sole ProprietorNo

Medical School CMSOregon Health Sciences University School Of MedicineGraduated 2016

Enumeration DateAugust 26, 2013

Last NPPES UpdateSeptember 20, 20242 updates tracked since enumeration

NPPES CertifiedSeptember 20, 2024

✔ NPI 1831523836 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 CA · A154056

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 ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

2 BON AIR RD STE 100, Larkspur, CA 94939

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Diana Tobler is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID3870828429

PECOS Enrollment IDI20190718001582

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 Diana Tobler reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Permanente Medical Group Inc

9.4 mi

Internal Medicine

901 NEVIN
Richmond, CA 94801

Reassigned Medicare billing, California enrollment
20,078 clinicians in this Medicare group

NPI 1235226531 (510) 307-1555

Regents Of The University Of California

12 mi

Endocrinology, Diabetes & Metabolism

1600 DIVISADERO ST
San Francisco, CA 94143

Reassigned Medicare billing, California enrollment
2,112 clinicians in this Medicare group

NPI 1235322348 (415) 353-9720

Ucsf Medical Group Business Services

13 mi

Internal Medicine

400 PARNASSUS AVE
San Francisco, CA 94122

Reassigned Medicare billing, California enrollment
5,544 clinicians in this Medicare group

NPI 1477624104 (415) 353-2808

University Of California San Francisco

13 mi

Internal Medicine

400 PARNASSUS AVE
San Francisco, CA 94143

Reassigned Medicare billing, California enrollment
5,645 clinicians in this Medicare group

NPI 1164512851 (415) 476-1000

Regents Univ Of California Ucsf

13 mi

Internal Medicine

505 PARNASSUS AVE
San Francisco, CA 94143

Reassigned Medicare billing, California enrollment
339 clinicians in this Medicare group

NPI 1124439807 (415) 476-1000

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 12

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.

130 services71 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.

90 services90 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.

63 services54 patients

Outpatient heart rehabilitation with electrocardiogram (ecg) monitoring, quality health care professional services 93798

Outpatient heart rehabilitation involves regular visits to a clinic for heart health improvement after a cardiac event. During these sessions, an electrocardiogram (ECG) monitors heart activity, while healthcare professionals provide personalized care and education on lifestyle changes, ensuring a safe recovery and reducing future heart risks.

54 services36 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.

45 services45 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

44 services44 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.

26 services26 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.

18 services14 patients

Ultrasound of heart blood flow, valves and chambers 93320

An ultrasound of your heart, also known as an echocardiogram, is a test that uses sound waves to create detailed images of your heart. It helps doctors check the health of your heart's chambers, valves, and blood flow.

12 services12 patients

Ultrasound of heart with color-depicted blood flow, rate and valve function 93325

An ultrasound of the heart, also known as an echocardiogram, uses sound waves to create pictures of your heart. It shows the structure, movement, and blood flow within your heart. This helps assess the heart's health and function, including the valves and rate.

12 services12 patients

Ultrasound of heart with continuous electrocardiogram (ecg) during rest, exercise and/or drug induced stress with review and report 93351

This procedure involves using ultrasound technology to create images of your heart while you rest, exercise, or undergo drug-induced stress. An ECG continuously monitors your heart's electrical activity. It helps doctors assess heart health and function.

12 services12 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94939 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

$154.04 typical visit price

range $69.07 – $202.63

Typical copayment $38.51 (range $17.26 – $50.65)

Most-billed visit code 99204

Established Patient

$85.00 typical visit price

range $23.44 – $166.64

Typical copayment $21.25 (range $5.86 – $41.66)

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.

Other Providers at the Same Location NPPES 19

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. SAHAR NADERI M.D.

Internal Medicine (Cardiovascular Disease)