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Dr. Geoffrey Cornelius Quinn, MD
NPI1215975826
- Medicare services, 2024
- 690
- Medicare patients, 2024
- 264
- Part D claims, 2024
- 5,070
- Publications
- 2
- Industry payments
- $1,388
- Practice address
- 3838 California St, San Francisco, CA 94118
- Practice phone
- Call (415) 972-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Brown & Toland Medical Group
San Francisco, California
Find Dr. Quinn's professional email, personal email and mobile number
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Dr. Geoffrey Cornelius Quinn is an internist in San Francisco, California
Dr. Quinn practices at Brown & Toland Medical Group in San Francisco, California.
Dr. Quinn's NPI, 1215975826, was assigned on June 4, 2006. Dr. Quinn graduated from Weill Cornell Medicine in 1992. Dr. Quinn holds California license G083611.
NPI and contact details
- NPI
- 1215975826NPI Registry (opens in a new tab)
- NPI enumeration date
- June 4, 2006
- NPI status
- Active
- Practice phone
- (415) 972-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Geoffrey Cornelius Quinn practices at Brown & Toland Medical Group in San Francisco, California
Dr. Quinn's primary practice is Brown & Toland Medical Group, at 3838 California St, San Francisco, CA 94118 in San Francisco County. The practice phone is (415) 972-6000.
- Brown & Toland Medical Group3838 California St, San Francisco, CA 94118 · San Francisco CountyPhone(415) 972-6000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Geoffrey Cornelius Quinn is affiliated with 2 sites of care and 1 medical group
Dr. Quinn's primary practice is Brown & Toland Medical Group in San Francisco, California. Dmand AI also links Dr. Quinn to 1 group practice or clinic and 1 medical group, each named with a free account.
Brown & Toland Medical GroupPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Geoffrey Cornelius Quinn's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Quinn practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Brown & Toland Medical Group | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Geoffrey Cornelius Quinn is one of 16,751 internists in California
Internal medicine is Dr. Quinn's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Quinn is board certified in internal medicine by the American Board of Internal Medicine. Dr. Quinn is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists acid reflux, acute gallbladder or bile duct inflammation, acute kidney failure, acute mini-stroke (TIA), alzheimer's disease, anxiety, arthritis and asthma among the conditions Dr. Quinn treats.
Internists near Dr. Quinn
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
Dr. Geoffrey Cornelius Quinn billed Medicare for 690 services in 2024
CMS data shows 690 Medicare services from Dr. Quinn across 6 procedure codes in 2024, for 264 Medicare patients. Medicare paid $56,206 for them. Every service was in an office.
Medicare services, 2024690
Medicare patients264
Paid by Medicare$56,206
Procedure codes6
Dr. Quinn's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Other services
- 2023: 3082024: 37522%
- Office and hospital visits
- 2023: 3672024: 27725%
- Lab and pathology
- 2023: 532024: 3828%
Dr. Quinn compared with the California median for internists, 2024
- Dr. Quinn
- California median
- Medicare services
- 690vs 36191% above
- Medicare patients
- 264vs 15175% above
- Part D claims
- 4,547vs 42110.8 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Quinn'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. Quinn and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Geoffrey Cornelius Quinn treated 264 Medicare patients in 2024, average age 78
CMS counts 264 Medicare patients who saw Dr. Quinn in 2024. The largest group is 75 to 84, with 127 patients. 63% of them have high cholesterol, and 56% have high blood pressure. Their average risk score is 0.90, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Quinn's median patient age at 76, with 34% women.
Medicare patients, 2024264
Average age78
Average risk score0.90
Dr. Quinn's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Quinn's Medicare patients by sex, 2024
- Women10640%
- Men15860%
Chronic conditions among Dr. Quinn's Medicare patients, 2024
- High cholesterol63%
- High blood pressure56%
- Arthritis36%
- Ischemic heart disease27%
- Atrial fibrillation19%
- Cancer19%
- Chronic kidney disease15%
- Diabetes12%
Share of Medicare patients with each condition. A patient can have several.
Dr. Quinn's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women34%
- Men63%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Geoffrey Cornelius Quinn wrote 5,070 Medicare Part D claims in 2024
In 2024, Dr. Quinn wrote 5,070 Medicare Part D claims for 479 patients. 90% of them were for generic drugs. CMS names the drug for 4,547 of them, across 83 drugs with 11 or more claims each, at $215,693 in total drug cost. In 2023, CMS named 5,152 claims across 85 drugs.
Part D claims, 20245,070
Drugs named by CMS83
Total drug cost$215,693
Part D patients479
Dr. Quinn's Part D claims by kind of drug, 2024
- Generic4,578 claims90%
- Brand-name479 claims9%
- Other13 claims0%
Dr. Quinn'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. Quinn's Part D claims, 2024
- Opioids2%99 of 5,070 claims
- Antibiotics1%70 of 5,070 claims
- Antipsychotics, patients 65 and over1%35 of 5,070 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: 5,1522024: 4,54712%
Drugs named by CMS: 83 in 2024, 85 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. Geoffrey Cornelius Quinn has 2 publications on record
Dmand AI links 2 papers to Dr. Quinn in 2017. Dr. Quinn's most frequent co-authors are Stephen Alan Paget, MD and Sergio Schwartzman, MD.
Papers2
Dr. Quinn's most frequent co-authors
- Stephen Alan Paget, MD1 shared paper
- Sergio Schwartzman, MD1 shared paper
Recent publications by Dr. Quinn
Semin Arthritis Rheum
Antirheumatic AgentsArthritis, RheumatoidLymphoma, Non-Hodgkin
See who Dr. Quinn researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Quinn works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Geoffrey Cornelius Quinn received $1,388 in industry payments from 2016 to 2025
CMS Open Payments shows 60 general payments to Dr. Quinn from 19 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Amgen Inc. paid the most, $338.
General payments to Dr. Quinn by program year, 2016 to 2025
Companies that paid Dr. Quinn the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Geoffrey Cornelius Quinn has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Quinn.
Awards and honors for Dr. Quinn
- Undated
- Checkbook Top Doc
- Super Doc
Source: Dmand AI Professional Profile Data
Dr. Geoffrey Cornelius Quinn graduated from Weill Cornell Medicine
Dr. Quinn graduated from Weill Cornell Medicine in 1992.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Geoffrey Cornelius Quinn accepts plans from 13 insurance carriers
Dr. Quinn is in network with 13 carriers, including Elevance, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Aetna
- Blue Cross Blue Shield of Massachusetts
- Humana
- Regence Health Plans
- +5 more carriersWith a free account
Plan types Dr. Quinn accepts, by number of carriers
- PPO9
- Medicare8
- HMO6
- POS4
- EPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Geoffrey Cornelius Quinn'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) |
| 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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Geoffrey Cornelius Quinn
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. Geoffrey Cornelius Quinn's NPI number?
Dr. Geoffrey Cornelius Quinn's NPI number is 1215975826. It was assigned on June 4, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Geoffrey Cornelius Quinn?
Dr. Geoffrey Cornelius Quinn is an internist in San Francisco, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Geoffrey Cornelius Quinn practice?
Dr. Quinn practices at 3838 California St, San Francisco, CA 94118. Dr. Quinn's primary practice is Brown & Toland Medical Group in San Francisco, California. Dmand AI also links Dr. Quinn to 1 group practice or clinic and 1 medical group.
What is Dr. Geoffrey Cornelius Quinn's office phone number?
The practice phone on file for Dr. Quinn is (415) 972-6000.
What is Dr. Geoffrey Cornelius Quinn's medical license number?
Dr. Quinn holds California license G083611.
Does Dr. Geoffrey Cornelius Quinn accept Medicare?
Yes. CMS data shows Dr. Quinn billed Medicare for 690 services in 2024.
How many Medicare patients does Dr. Geoffrey Cornelius Quinn see?
CMS counts 264 Medicare patients who saw Dr. Quinn in 2024, with an average age of 78.
Is Dr. Geoffrey Cornelius Quinn board certified?
Yes. Dr. Quinn is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Geoffrey Cornelius Quinn bill to Medicare?
In 2024, Dr. Quinn's most billed Medicare services were office visit, established patient (99214), medicare service (G0439) and medicare service (G0442).
Where did Dr. Geoffrey Cornelius Quinn go to medical school?
Dr. Quinn graduated from Weill Cornell Medicine in 1992.
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What drugs does Dr. Geoffrey Cornelius Quinn prescribe most?
In 2024 Medicare Part D data, Dr. Quinn's most prescribed drugs by claims were Atorvastatin Calcium, Losartan Potassium and Amlodipine Besylate.
Has Dr. Geoffrey Cornelius Quinn received payments from drug or device companies?
CMS Open Payments shows $1,388 in general payments to Dr. Quinn from 19 companies from 2016 to 2025. The largest total came from Amgen Inc.
How long has Dr. Geoffrey Cornelius Quinn been practicing?
Dr. Quinn graduated from medical school in 1992, 34 years ago.
Does Dr. Geoffrey Cornelius Quinn do research?
Dmand AI links 2 publications to Dr. Quinn.
Who does Dr. Geoffrey Cornelius Quinn publish with?
Dr. Quinn's most frequent co-authors are Stephen Alan Paget, MD (1 shared paper) and Sergio Schwartzman, MD (1 shared paper).
What insurance does Dr. Geoffrey Cornelius Quinn accept?
Dr. Quinn is in network with 13 carriers, including Elevance, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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