Dr. James Conrad Gardner, MD
- Part D claims, 2024
- 1,607
- Hospital affiliations
- 1
- Industry payments
- $3,794
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 250 Bon Air Road, Greenbrae, CA 94904
- Practice phone
- Call (415) 925-7900
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. James Conrad Gardner is a general practice physician in Greenbrae, California
Dr. Gardner practices at MarinHealth Medical Center in Greenbrae, California, part of Marin Healthcare District.
Dr. Gardner's NPI, 1255447330, was assigned on August 22, 2006. Dr. Gardner graduated from David Geffen School of Medicine at UCLA in 1986. Dr. Gardner holds California license G060562.
- NPI
- 1255447330NPI Registry (opens in a new tab)
- NPI enumeration date
- August 22, 2006
- NPI status
- Active
- Practice phone
- (415) 925-7900
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1986
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. James Conrad Gardner practices at MarinHealth Medical Center in Greenbrae, California
Dr. Gardner's primary practice is MarinHealth Medical Center, at 250 Bon Air Road, Greenbrae, CA 94904 in Marin County. The practice phone is (415) 925-7900.
- MarinHealth Medical Center250 Bon Air Road, Greenbrae, CA 94904 · Marin CountyPhone(415) 925-7900
Source: Dmand AI Affiliation Data
Dr. James Conrad Gardner is affiliated with 1 site of care
Dr. Gardner's primary practice is MarinHealth Medical Center in Greenbrae, California, part of Marin Healthcare District.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. James Conrad Gardner's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gardner practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| MarinHealth Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. James Conrad Gardner is one of 1,526 general practice physicians in California
General practice is Dr. Gardner's primary specialty in the NPI Registry, under taxonomy code 208D00000X. Dr. Gardner is licensed in California.
Specialties and state licenses
- General practice, CaliforniaPrimary
General practice physicians near Dr. Gardner
Counts of general practice physicians 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. James Conrad Gardner's patients have a median age of 65
Across all payers, Dmand AI patient panel data puts Dr. Gardner's median patient age at 65, with 48% women.
Dr. Gardner's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women48%
- Men49%
Source: Dmand AI Patient Panel Data
Dr. James Conrad Gardner wrote 1,607 Medicare Part D claims in 2024
In 2024, Dr. Gardner wrote 1,607 Medicare Part D claims for 153 patients. 91% of them were for generic drugs. CMS names the drug for 1,105 of them, across 44 drugs with 11 or more claims each, at $27,611 in total drug cost. In 2023, CMS named 1,221 claims across 49 drugs.
Dr. Gardner's Part D claims by kind of drug, 2024
- Generic1,459 claims91%
- Brand-name129 claims8%
- Other19 claims1%
Dr. Gardner'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.
Drug classes CMS tracks in Dr. Gardner's Part D claims, 2024
- Opioids2%31 of 1,607 claims
- Antibiotics3%54 of 1,607 claims
- Antipsychotics, patients 65 and over1%18 of 1,607 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,2212024: 1,10510%
Drugs named by CMS: 44 in 2024, 49 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
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Dr. James Conrad Gardner received $3,794 in industry payments from 2016 to 2024
CMS Open Payments shows 196 general payments to Dr. Gardner from 33 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 94% of the total. Abbvie Inc. paid the most, $537.
General payments to Dr. Gardner by program year, 2016 to 2024
General payments to Dr. Gardner by kind, 2016 to 2024
- Food and beverage$3,56894%
- Education$2266%
Companies that paid Dr. Gardner the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. James Conrad Gardner graduated from David Geffen School of Medicine at UCLA
Dr. Gardner graduated from David Geffen School of Medicine at UCLA in 1986.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. James Conrad Gardner'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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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) |
| 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 Dr. James Conrad Gardner
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. James Conrad Gardner's NPI number?
Dr. James Conrad Gardner's NPI number is 1255447330. It was assigned on August 22, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. James Conrad Gardner?
Dr. James Conrad Gardner is a general practice physician in Greenbrae, California. The primary specialty in the NPI Registry is General Practice Physician (taxonomy code 208D00000X).
Where does Dr. James Conrad Gardner practice?
Dr. Gardner practices at 250 Bon Air Road, Greenbrae, CA 94904. Dr. Gardner's primary practice is MarinHealth Medical Center in Greenbrae, California, part of Marin Healthcare District.
What is Dr. James Conrad Gardner's office phone number?
The practice phone on file for Dr. Gardner is (415) 925-7900.
What is Dr. James Conrad Gardner's medical license number?
Dr. Gardner holds California license G060562.
Which hospitals is Dr. James Conrad Gardner affiliated with?
Dr. Gardner practices at MarinHealth Medical Center in Greenbrae, California.
Where did Dr. James Conrad Gardner go to medical school?
Dr. Gardner graduated from David Geffen School of Medicine at UCLA in 1986.
What drugs does Dr. James Conrad Gardner prescribe most?
In 2024 Medicare Part D data, Dr. Gardner's most prescribed drugs by claims were Levothyroxine Sodium, Progesterone and Liothyronine Sodium.
Has Dr. James Conrad Gardner received payments from drug or device companies?
CMS Open Payments shows $3,794 in general payments to Dr. Gardner from 33 companies from 2016 to 2024. The largest total came from Abbvie Inc.
How long has Dr. James Conrad Gardner been practicing?
Dr. Gardner graduated from medical school in 1986, 40 years ago.
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