Dr. Jonathan Gau, MD
- Medicare services, 2024
- 159
- Medicare patients, 2024
- 52
- Part D claims, 2024
- 97
- Publications
- 3
- Hospital affiliations
- 1
- Practice address
- 101 City Drive South, Orange, CA 92868
- Practice phone
- Call (714) 456-7890
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Gau's professional email, personal email and mobile number
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Dr. Jonathan Gau is a hospitalist in Orange, California
Dr. Gau practices at UCI Health - Orange in Orange, California, part of UC Irvine.
Dr. Gau's NPI, 1730765603, was assigned on March 22, 2021. Dr. Gau holds California license A181959.
- NPI
- 1730765603NPI Registry (opens in a new tab)
- NPI enumeration date
- March 22, 2021
- NPI status
- Active
- Practice phone
- (714) 456-7890
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 31
- Medical school graduation
- 2021
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Jonathan Gau practices at UCI Health - Orange in Orange, California
Dr. Gau's primary practice is UCI Health - Orange, at 101 City Drive South, Orange, CA 92868 in Orange County. The practice phone is (714) 456-7890.
- UCI Health - Orange101 City Drive South, Orange, CA 92868 · Orange CountyPhone(714) 456-7890
Source: Dmand AI Affiliation Data
Dr. Jonathan Gau is affiliated with 1 site of care and 1 medical group
Dr. Gau's primary practice is UCI Health - Orange in Orange, California, part of UC Irvine. The medical group on file is UCI Health.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Jonathan Gau's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gau practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UCI Health - Orange | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jonathan Gau is one of 3,186 hospitalists in California
Hospitalist is Dr. Gau's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Gau is licensed in California.
Specialties and state licenses
- Hospitalist, CaliforniaPrimary
Hospitalists near Dr. Gau
Counts of hospitalists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Jonathan Gau billed Medicare for 159 services in 2024
CMS data shows 159 Medicare services from Dr. Gau across 4 procedure codes in 2024, for 52 Medicare patients. Medicare paid $15,909 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Gau compared with the California median for hospitalists, 2024
- Dr. Gau
- California median
- Medicare services
- 159vs 43063% below
- Medicare patients
- 52vs 20174% below
Medians across 2,991 hospitalists in California with Dmand AI profiles that report each measure.
Dr. Gau'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Gau and other hospitalists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jonathan Gau treated 52 Medicare patients in 2024, average age 70
CMS counts 52 Medicare patients who saw Dr. Gau in 2024. The largest group is 65 to 74, with 20 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 73% are also on Medicaid. Their average risk score is 3.60, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Gau's median patient age at 70, with 40% women.
Dr. Gau's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Gau's Medicare patients by sex, 2024
- Women2140%
- Men3160%
Chronic conditions among Dr. Gau's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease56%
- Diabetes56%
- Arthritis54%
- Mood disorders44%
- Depression42%
- Heart failure42%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gau's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women40%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jonathan Gau wrote 97 Medicare Part D claims in 2024
In 2024, Dr. Gau wrote 97 Medicare Part D claims for 40 patients. 70% of them were for generic drugs.
Dr. Gau's Part D claims by kind of drug, 2024
- Generic68 claims70%
- Brand-name and other29 claims30%
Drug classes CMS tracks in Dr. Gau's Part D claims, 2024
- Antibiotics11%11 of 97 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Jonathan Gau has 3 publications on record
Dmand AI links 3 papers to Dr. Gau, published from 2017 to 2024. Dr. Gau's most frequent co-authors are Tzung Z. Hsiai, MD, Andy Yen-Tang Lee, MD and Behram Parvez Mody, MD.
Dr. Gau's papers by year, 2017 to 2024
Dr. Gau's most frequent co-authors
- Tzung Z. Hsiai, MD1 shared paper
- Andy Yen-Tang Lee, MD1 shared paper
- Behram Parvez Mody, MD1 shared paper
Recent publications by Dr. Gau
See who Dr. Gau researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Gau works with, so you can find a warm path to the right hospitalists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Jonathan Gau received $270 in industry payments from 2024 to 2025
CMS Open Payments shows 3 general payments to Dr. Gau from 2 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Kestra Medical Technology Services, Inc. paid the most, $152.
General payments to Dr. Gau by program year, 2024 to 2025
Companies that paid Dr. Gau the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Jonathan Gau'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand 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 (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) |
| 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 Dr. Jonathan Gau
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Jonathan Gau's NPI number?
Dr. Jonathan Gau's NPI number is 1730765603. It was assigned on March 22, 2021, and it is active in the NPI Registry.
What kind of doctor is Dr. Jonathan Gau?
Dr. Jonathan Gau is a hospitalist in Orange, California. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Jonathan Gau practice?
Dr. Gau practices at 101 City Drive South, Orange, CA 92868. Dr. Gau's primary practice is UCI Health - Orange in Orange, California, part of UC Irvine.
What is Dr. Jonathan Gau's office phone number?
The practice phone on file for Dr. Gau is (714) 456-7890.
What is Dr. Jonathan Gau's medical license number?
Dr. Gau holds California license A181959.
Which hospitals is Dr. Jonathan Gau affiliated with?
Dr. Gau practices at UCI Health - Orange in Orange, California.
What medical group is Dr. Jonathan Gau part of?
Dr. Gau is linked to UCI Health.
Does Dr. Jonathan Gau accept Medicare?
Yes. CMS data shows Dr. Gau billed Medicare for 159 services in 2024.
How many Medicare patients does Dr. Jonathan Gau see?
CMS counts 52 Medicare patients who saw Dr. Gau in 2024, with an average age of 70.
What services does Dr. Jonathan Gau bill to Medicare?
In 2024, Dr. Gau's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99223) and hospital inpatient care (99232).
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Has Dr. Jonathan Gau received payments from drug or device companies?
CMS Open Payments shows $270 in general payments to Dr. Gau from 2 companies from 2024 to 2025. The largest total came from Kestra Medical Technology Services, Inc.
How long has Dr. Jonathan Gau been practicing?
Dr. Gau graduated from medical school in 2021, 5 years ago.
Does Dr. Jonathan Gau do research?
Dmand AI links 3 publications to Dr. Gau, published from 2017 to 2024.
Who does Dr. Jonathan Gau publish with?
Dr. Gau's most frequent co-authors are Tzung Z. Hsiai, MD (1 shared paper), Andy Yen-Tang Lee, MD (1 shared paper) and Behram Parvez Mody, MD (1 shared paper).
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