Robert James Doris
- Medicare services, 2024
- 248
- Medicare patients, 2024
- 180
- Part D claims, 2024
- 436
- Hospital affiliations
- 3
- Industry payments
- $21
- Practice address
- 1100 Larkspur Landing Cir, Larkspur, CA 94939
- Practice phone
- Call (415) 884-1840
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Prima Medical Foundation
Larkspur, California
Find Robert Doris' professional email, personal email and mobile number
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Robert James Doris is an internist in Larkspur, California
Robert Doris practices at Prima Medical Foundation in Larkspur, California.
Robert Doris' NPI, 1528647096, was assigned on April 3, 2021. Robert Doris holds California license A196909.
- NPI
- 1528647096NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2860893344
- NPI enumeration date
- April 3, 2021
- NPI status
- Active
- Offers telehealth
- Yes
- Practice phone
- (415) 884-1840
- 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; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Robert James Doris practices at Prima Medical Foundation in Larkspur, California
Robert Doris' primary practice is Prima Medical Foundation, at 1100 Larkspur Landing Cir, Larkspur, CA 94939 in Marin County. The practice phone is (415) 884-1840.
- Prima Medical Foundation1100 Larkspur Landing Cir, Larkspur, CA 94939 · Marin CountyPhone(415) 884-1840
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Robert James Doris is affiliated with 10 sites of care and 1 medical group
Robert Doris' primary practice is Prima Medical Foundation in Larkspur, California. Robert Doris is also affiliated with UCSF Helen Diller Medical Center at Parnassus Heights. The medical group on file is UCSF Medical Group. Dmand AI also links Robert Doris to 2 more hospitals, 5 home health agencies and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Robert James Doris' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Robert Doris practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Prima Medical Foundation | Available with a free account |
| +9 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Robert James Doris is one of 16,751 internists in California
Internal medicine is Robert Doris' primary specialty in the NPI Registry, under taxonomy code 207R00000X. Robert Doris is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Robert Doris
Counts of internists 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
Robert James Doris billed Medicare for 248 services in 2024
CMS data shows 248 Medicare services from Robert Doris across 3 procedure codes in 2024, for 180 Medicare patients. Medicare paid $28,972 for them. Every service was in an office.
Robert Doris' Medicare services by type, 2024
- Office and hospital visits189
- Other services59
Robert Doris compared with the California median for internists, 2024
- Robert Doris
- California median
- Medicare services
- 248vs 36131% below
- Medicare patients
- 180vs 15119% above
- Part D claims
- 111vs 42174% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Robert Doris' 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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Robert James Doris treated 180 Medicare patients in 2024, average age 78
CMS counts 180 Medicare patients who saw Robert Doris in 2024. The largest group is 75 to 84, with 77 patients. 75% of them have high cholesterol, and 64% have high blood pressure. Their average risk score is 0.93, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Robert Doris' median patient age at 69, with 60% women.
Robert Doris' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Robert Doris' Medicare patients by sex, 2024
- Women10056%
- Men8044%
Chronic conditions among Robert Doris' Medicare patients, 2024
- High cholesterol75%
- High blood pressure64%
- Arthritis43%
- Osteoporosis27%
- Chronic kidney disease24%
- Ischemic heart disease21%
- Mood disorders21%
- Cancer18%
Share of Medicare patients with each condition. A patient can have several.
Robert Doris' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women60%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Robert James Doris wrote 436 Medicare Part D claims in 2024
In 2024, Robert Doris wrote 436 Medicare Part D claims for 178 patients. 83% of them were for generic drugs. CMS names the drug for 111 of them, across 6 drugs with 11 or more claims each, at $26,311 in total drug cost.
Robert Doris' Part D claims by kind of drug, 2024
- Generic364 claims83%
- Brand-name and other72 claims17%
Robert Doris' 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.
Drug classes CMS tracks in Robert Doris' Part D claims, 2024
- Opioids3%12 of 436 claims
- Antibiotics6%27 of 436 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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
Robert James Doris offers telehealth to Medicare patients
CMS lists Robert Doris as offering telehealth.
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Robert James Doris received $21 in industry payments in 2024
CMS Open Payments shows 1 general payment to Robert Doris from 1 drug or device company in 2024. Food and beverage make up the largest share, 100% of the total. CSL Behring paid the most, $21.
Companies that paid Robert Doris the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Robert James Doris'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 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) |
| 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 Robert James Doris
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Robert James Doris' NPI number?
Robert James Doris' NPI number is 1528647096. It was assigned on April 3, 2021, and it is active in the NPI Registry.
What does Robert James Doris specialize in?
Robert James Doris is an internist in Larkspur, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Robert James Doris practice?
Robert Doris practices at 1100 Larkspur Landing Cir, Larkspur, CA 94939. Robert Doris' primary practice is Prima Medical Foundation in Larkspur, California. Dmand AI also links Robert Doris to 2 hospitals, 5 home health agencies and 1 group practice or clinic.
What is Robert James Doris' office phone number?
The practice phone on file for Robert Doris is (415) 884-1840.
What is Robert James Doris' medical license number?
Robert Doris holds California license A196909, one of 2 state licenses on file.
Which hospitals is Robert James Doris affiliated with?
Robert Doris is affiliated with UCSF Helen Diller Medical Center at Parnassus Heights. Dmand AI links Robert Doris to 2 more hospitals.
What medical group is Robert James Doris part of?
Robert Doris is linked to UCSF Medical Group.
Does Robert James Doris accept Medicare?
Yes. CMS data shows Robert Doris billed Medicare for 248 services in 2024.
Does Robert James Doris offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Robert Doris as offering telehealth services.
How many Medicare patients does Robert James Doris see?
CMS counts 180 Medicare patients who saw Robert Doris in 2024, with an average age of 78.
Show 4 more questionsShow fewer questions
What services does Robert James Doris bill to Medicare?
In 2024, Robert Doris' most billed Medicare services were office visit, established patient (99214), medicare service (G0439) and office visit, established patient (99213).
What drugs does Robert James Doris prescribe most?
In 2024 Medicare Part D data, Robert Doris' most prescribed drugs by claims were Atorvastatin Calcium, Gabapentin and Lisinopril.
Has Robert James Doris received payments from drug or device companies?
CMS Open Payments shows $21 in general payments to Robert Doris from 1 company from 2024 to 2024. The largest total came from CSL Behring.
How long has Robert James Doris been practicing?
Robert Doris graduated from medical school in 2021, 5 years ago.
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