Curr Atheroscler Rep
Acute Coronary SyndromeArrhythmias, CardiacCOVID-19
Diana L. Tobler
NPI1831523836PAC ID3870828429
- Medicare services, 2024
- 618
- Medicare patients, 2024
- 346
- Part D claims, 2024
- 493
- Publications
- 2
- Hospital affiliations
- 4
- Practice address
- 651 1st W St, Sonoma, CA 95476
- Practice phone
- Call (415) 464-2090
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Marin Healthcare District
Sonoma, California
Find Diana Tobler's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Diana L. Tobler is a cardiologist in Sonoma, California
Diana Tobler practices at Marin Healthcare District in Sonoma, California.
Diana Tobler's NPI, 1831523836, was assigned on August 26, 2013. Diana Tobler graduated from Oregon Health Sciences University School of Medicine in 2016. Diana Tobler holds California license A154056.
NPI and contact details
- NPI
- 1831523836NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3870828429
- NPI enumeration date
- August 26, 2013
- NPI status
- Active
- Offers telehealth
- Yes
- Practice phone
- (415) 464-2090
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Diana L. Tobler practices at Marin Healthcare District in Sonoma, California
Diana Tobler's primary practice is Marin Healthcare District, at 651 1st W St, Sonoma, CA 95476 in Sonoma County. The practice phone is (415) 464-2090.
- Marin Healthcare District651 1st W St, Sonoma, CA 95476 · Sonoma CountyPhone(415) 464-2090
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Diana L. Tobler is affiliated with 9 sites of care and 5 medical groups
Diana Tobler's primary practice is Marin Healthcare District in Sonoma, California. Diana Tobler is also affiliated with Sonoma Valley Hospital. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Diana Tobler to 3 more hospitals, 4 group practices and clinics and 4 medical groups, each named with a free account.
Marin Healthcare DistrictPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Diana L. Tobler's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Diana Tobler practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Marin Healthcare District | Available with a free account |
| +8 more sites and 4 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Diana L. Tobler is one of 2,375 cardiologists in California
Cardiovascular disease is Diana Tobler's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Diana Tobler is licensed in California.
Specialties and state licenses
- Cardiovascular disease, CaliforniaPrimary
Cardiologists near Diana Tobler
Counts of cardiologists with a Dmand AI profile, by place and practice. Each opens the list.
2,375cardiologists in California
2cardiologists in Sonoma
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Diana L. Tobler billed Medicare for 618 services in 2024
CMS data shows 618 Medicare services from Diana Tobler across 12 procedure codes in 2024, for 346 Medicare patients. Medicare paid $45,535 for them.
Medicare services, 2024618
Medicare patients346
Paid by Medicare$45,535
Procedure codes12
Diana Tobler's Medicare services by type, 2021 to 2024
- 2021
- 2024
- Office and hospital visits
- 2021: 352024: 300757%
- Tests and treatments
- 2021: 02024: 217
- Other services
- 2021: 02024: 101
Where Diana Tobler's Medicare services took place, 2024
- In an office33554%
- In a facility28346%
Diana Tobler compared with the California median for cardiologists, 2024
- Diana Tobler
- California median
- Medicare services
- 618vs 1,56060% below
- Medicare patients
- 346vs 64446% below
- Part D claims
- 340vs 1,41076% below
Medians across 2,237 cardiologists in California with Dmand AI profiles that report each measure.
Diana Tobler's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Diana Tobler?
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Diana L. Tobler treated 346 Medicare patients in 2024, average age 78
CMS counts 346 Medicare patients who saw Diana Tobler in 2024. The largest group is 75 to 84, with 158 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 17% are also on Medicaid. Their average risk score is 1.28, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Diana Tobler's median patient age at 73, with 52% women.
Medicare patients, 2024346
Average age78
Average risk score1.28
Also on Medicaid17%
Diana Tobler's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Diana Tobler's Medicare patients by sex, 2024
- Women17551%
- Men17149%
Chronic conditions among Diana Tobler's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease50%
- Atrial fibrillation43%
- Arthritis42%
- Heart failure34%
- Chronic kidney disease31%
- Mood disorders26%
Share of Medicare patients with each condition. A patient can have several.
Diana Tobler's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women52%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Diana L. Tobler wrote 493 Medicare Part D claims in 2024
In 2024, Diana Tobler wrote 493 Medicare Part D claims for 122 patients. 83% of them were for generic drugs. CMS names the drug for 340 of them, across 12 drugs with 11 or more claims each, at $48,481 in total drug cost. In 2023, CMS named 274 claims across 12 drugs.
Part D claims, 2024493
Drugs named by CMS12
Total drug cost$48,481
Part D patients122
Diana Tobler's Part D claims by kind of drug, 2024
- Generic411 claims83%
- Brand-name82 claims17%
Diana Tobler's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2742024: 34024%
Drugs named by CMS: 12 in 2024, 12 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Diana L. Tobler offers telehealth to Medicare patients
CMS lists Diana Tobler as offering telehealth.
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Diana L. Tobler has 2 publications on record
Dmand AI links 2 papers to Diana Tobler, published from 2011 to 2022. Diana Tobler's most frequent co-authors are Brian Taylor Clifford, MD, Michelle L. Hermiston, MD and Scott C. Kogan, MD.
Papers2
Years published2011 to 2022
Diana Tobler's most frequent co-authors
- Brian Taylor Clifford, MD1 shared paper
- Michelle L. Hermiston, MD1 shared paper
- Scott C. Kogan, MD1 shared paper
Recent publications by Diana Tobler
See who Diana Tobler researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Diana Tobler works with, so you can find a warm path to the right cardiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Diana L. Tobler received $263 in industry payments in 2024
CMS Open Payments shows 3 general payments to Diana Tobler from 1 drug or device company in 2024. Food and beverage make up the largest share, 100% of the total. HeartFlow, Inc. paid the most, $263.
Companies that paid Diana Tobler the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Diana L. Tobler graduated from Oregon Health Sciences University School of Medicine
Diana Tobler graduated from Oregon Health Sciences University School of Medicine in 2016.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Diana L. Tobler's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Diana L. Tobler
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Diana L. Tobler's NPI number?
Diana L. Tobler's NPI number is 1831523836. It was assigned on August 26, 2013, and it is active in the NPI Registry.
What does Diana L. Tobler specialize in?
Diana L. Tobler is a cardiologist in Sonoma, California. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Diana L. Tobler practice?
Diana Tobler practices at 651 1st W St, Sonoma, CA 95476. Diana Tobler's primary practice is Marin Healthcare District in Sonoma, California. Dmand AI also links Diana Tobler to 3 hospitals, 4 group practices and clinics and 4 medical groups.
What is Diana L. Tobler's office phone number?
The practice phone on file for Diana Tobler is (415) 464-2090.
What is Diana L. Tobler's medical license number?
Diana Tobler holds California license A154056.
Which hospitals is Diana L. Tobler affiliated with?
Diana Tobler is affiliated with Sonoma Valley Hospital. Dmand AI links Diana Tobler to 3 more hospitals.
What medical group is Diana L. Tobler part of?
Diana Tobler is linked to The Permanente Medical Group, Inc. Dmand AI links Diana Tobler to 4 more medical groups.
Does Diana L. Tobler accept Medicare?
Yes. CMS data shows Diana Tobler billed Medicare for 618 services in 2024.
Does Diana L. Tobler offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Diana Tobler as offering telehealth services.
How many Medicare patients does Diana L. Tobler see?
CMS counts 346 Medicare patients who saw Diana Tobler in 2024, with an average age of 78.
Show 7 more questionsShow fewer questions
What services does Diana L. Tobler bill to Medicare?
In 2024, Diana Tobler's most billed Medicare services were hospital inpatient care (99233), heart test or procedure (93306) and medicare service (G2211).
Where did Diana L. Tobler go to medical school?
Diana Tobler graduated from Oregon Health Sciences University School of Medicine in 2016.
What drugs does Diana L. Tobler prescribe most?
In 2024 Medicare Part D data, Diana Tobler's most prescribed drugs by claims were Losartan Potassium, Spironolactone and Furosemide.
Has Diana L. Tobler received payments from drug or device companies?
CMS Open Payments shows $263 in general payments to Diana Tobler from 1 company from 2024 to 2024. The largest total came from HeartFlow, Inc.
How long has Diana L. Tobler been practicing?
Diana Tobler graduated from medical school in 2016, 10 years ago.
Does Diana L. Tobler do research?
Dmand AI links 2 publications to Diana Tobler, published from 2011 to 2022.
Who does Diana L. Tobler publish with?
Diana Tobler's most frequent co-authors are Brian Taylor Clifford, MD (1 shared paper), Michelle L. Hermiston, MD (1 shared paper) and Scott C. Kogan, MD (1 shared paper).
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