An allosteric switch for pro-HGF/Met signaling using zymogen activator peptides (opens in a new tab)
Nat Chem Biol
Allosteric RegulationAllosteric SiteAmino Acid Sequence
Dr. Clifford F. Quan, MD
NPI1235322264PAC ID5193864676
- Medicare services, 2023
- 12
- Medicare patients, 2024
- 19
- Part D claims, 2024
- 4,117
- Publications
- 5
- Hospital affiliations
- 2
- Practice address
- 901 Nevin Ave, Richmond, CA 94801
- Practice phone
- Call (510) 307-1555
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Richmond Medical Center
Richmond, California
Find Dr. Quan'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.
Dr. Clifford F. Quan is an infectious disease specialist in Richmond, California
Dr. Quan practices at Richmond Medical Center in Richmond, California.
Dr. Quan's NPI, 1235322264, was assigned on August 22, 2007. Dr. Quan graduated from David Geffen School of Medicine at UCLA in 2004. Dr. Quan holds California license A94084.
NPI and contact details
- NPI
- 1235322264NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5193864676
- NPI enumeration date
- August 22, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (510) 307-1555
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Clifford F. Quan practices at Richmond Medical Center in Richmond, California
Dr. Quan's primary practice is Richmond Medical Center, at 901 Nevin Ave, Richmond, CA 94801 in Contra Costa County. The practice phone is (510) 307-1555.
- Richmond Medical Center901 Nevin Ave, Richmond, CA 94801 · Contra Costa CountyPhone(510) 307-1555
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Clifford F. Quan is affiliated with 3 sites of care and 1 medical group
Dr. Quan's primary practice is Richmond Medical Center in Richmond, California. Dr. Quan is also affiliated with Walnut Creek Medical Center. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Quan to 1 more hospital, named with a free account.
Richmond Medical CenterPrimary
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 Dr. Clifford F. Quan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Quan practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Richmond Medical Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Clifford F. Quan is one of 1,054 infectious disease specialists in California
Infectious disease is Dr. Quan's primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Dr. Quan is board certified in infectious disease by the American Board of Internal Medicine. Dr. Quan is licensed in California.
Specialties and state licenses
- Infectious disease, CaliforniaPrimary
Infectious disease specialists near Dr. Quan
Counts of infectious disease specialists with a Dmand AI profile, by place and practice. Each opens the list.
1,054infectious disease specialists in California
7infectious disease specialists in Richmond
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Clifford F. Quan billed Medicare for 12 services in 2023
CMS data shows 12 Medicare services from Dr. Quan across 1 procedure code in 2023, for 19 Medicare patients. Medicare paid $434 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 202312
Medicare patients19
Paid by Medicare$434
Procedure codes1
Dr. Quan compared with the California median for infectious disease specialists, 2023
- Dr. Quan
- California median
- Medicare services
- 12vs 42997% below
- Medicare patients
- 19vs 18089% below
- Part D claims
- 3,859vs 11932.4 times
Medians across 930 infectious disease specialists in California with Dmand AI profiles that report each measure.
Dr. Quan's most billed Medicare procedure codes, 2023
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 Dr. Quan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Quan and other infectious disease specialists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Clifford F. Quan treated 19 Medicare patients in 2024, average age 63
CMS counts 19 Medicare patients who saw Dr. Quan in 2024. 58% of them have high blood pressure. Their average risk score is 2.62, 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. Quan's median patient age at 54, with 58% women.
Medicare patients, 202419
Average age63
Average risk score2.62
Chronic conditions among Dr. Quan's Medicare patients, 2024
- High blood pressure58%
Share of Medicare patients with each condition. A patient can have several.
Dr. Quan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 54
Patient panel by sex, all payers
- Women58%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Clifford F. Quan wrote 4,117 Medicare Part D claims in 2024
In 2024, Dr. Quan wrote 4,117 Medicare Part D claims for 1,606 patients. 56% of them were for generic drugs. CMS names the drug for 3,859 of them, across 39 drugs with 11 or more claims each, at $1,452,355 in total drug cost. In 2023, CMS named 2,227 claims across 33 drugs.
Part D claims, 20244,117
Drugs named by CMS39
Total drug cost$1.5M
Part D patients1,606
Dr. Quan's Part D claims by kind of drug, 2024
- Generic2,311 claims56%
- Brand-name1,806 claims44%
Dr. Quan'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. Quan's Part D claims, 2024
- Antibiotics35%1,437 of 4,117 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: 2,2272024: 3,85973%
Drugs named by CMS: 39 in 2024, 33 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
How Dr. Clifford F. Quan takes part in Medicare
Dr. Quan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Clifford F. Quan has 5 publications on record
Dmand AI links 5 papers to Dr. Quan, published from 2007 to 2014. 2012 was the busiest year, with 2. The most frequent topics are Amino Acid Sequence, Cell Survival and Models, Molecular. Dr. Quan's most frequent co-authors are Kiran Bharadwa, MD, Jason Daniel Cronin, MD and Sue Gail Eckhardt, MD.
Papers5
Years published2007 to 2014
Dr. Quan's papers by year, 2007 to 2014
Topics Dr. Quan writes about most
- Amino Acid Sequence
- Cell Survival
- Models, Molecular
- Molecular Sequence Data
- Peptide Library
- Protein Binding
Dr. Quan's most frequent co-authors
- Kiran Bharadwa, MD1 shared paper
- Jason Daniel Cronin, MD1 shared paper
- Sue Gail Eckhardt, MD1 shared paper
Recent publications by Dr. Quan
Amino Acid SequenceAmino Acid SubstitutionCalcium
Antineoplastic AgentsApoptosisBaculoviral IAP Repeat-Containing 3 Protein
Age DistributionAnti-Infective AgentsCommunity-Acquired Infections
Proc Am Thorac Soc
Drug Therapy, CombinationFusariumImmunocompromised Host
See who Dr. Quan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Quan works with, so you can find a warm path to the right infectious disease specialists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Clifford F. Quan has 1 award and honors on record
Dmand AI lists 1 award for Dr. Quan, most recently CMS Stage 1 2012 in 2011.
Awards and honors for Dr. Quan
- 2011
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. Clifford F. Quan graduated from David Geffen School of Medicine at UCLA
Dr. Quan graduated from David Geffen School of Medicine at UCLA in 2004.
- Medical school
- Board certified in infectious disease
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Clifford F. Quan accepts plans from 2 insurance carriers
Dr. Quan is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Quan accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Clifford F. Quan'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 |
| 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. Clifford F. Quan
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. Clifford F. Quan's NPI number?
Dr. Clifford F. Quan's NPI number is 1235322264. It was assigned on August 22, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Clifford F. Quan?
Dr. Clifford F. Quan is an infectious disease specialist in Richmond, California. The primary specialty in the NPI Registry is Infectious Disease Physician (taxonomy code 207RI0200X).
Where does Dr. Clifford F. Quan practice?
Dr. Quan practices at 901 Nevin Ave, Richmond, CA 94801. Dr. Quan's primary practice is Richmond Medical Center in Richmond, California. Dmand AI also links Dr. Quan to 1 hospital.
What is Dr. Clifford F. Quan's office phone number?
The practice phone on file for Dr. Quan is (510) 307-1555.
What is Dr. Clifford F. Quan's medical license number?
Dr. Quan holds California license A94084.
Which hospitals is Dr. Clifford F. Quan affiliated with?
Dr. Quan is affiliated with Walnut Creek Medical Center. Dmand AI links Dr. Quan to 1 more hospital.
What medical group is Dr. Clifford F. Quan part of?
Dr. Quan is linked to The Permanente Medical Group, Inc.
Does Dr. Clifford F. Quan accept Medicare?
Yes. CMS data shows Dr. Quan billed Medicare for 12 services in 2023, and Dr. Quan accepts Medicare assignment.
How many Medicare patients does Dr. Clifford F. Quan see?
CMS counts 19 Medicare patients who saw Dr. Quan in 2024, with an average age of 63.
Is Dr. Clifford F. Quan board certified?
Yes. Dr. Quan is board certified in infectious disease by the American Board of Internal Medicine.
Show 7 more questionsShow fewer questions
What services does Dr. Clifford F. Quan bill to Medicare?
In 2023, Dr. Quan's most billed Medicare services were medicare service (G0008).
Where did Dr. Clifford F. Quan go to medical school?
Dr. Quan graduated from David Geffen School of Medicine at UCLA in 2004.
What drugs does Dr. Clifford F. Quan prescribe most?
In 2024 Medicare Part D data, Dr. Quan's most prescribed drugs by claims were Azithromycin, Atovaquone-Proguanil HCl and Typhim Vi.
How long has Dr. Clifford F. Quan been practicing?
Dr. Quan graduated from medical school in 2004, 22 years ago.
Does Dr. Clifford F. Quan do research?
Dmand AI links 5 publications to Dr. Quan, published from 2007 to 2014.
Who does Dr. Clifford F. Quan publish with?
Dr. Quan's most frequent co-authors are Kiran Bharadwa, MD (1 shared paper), Jason Daniel Cronin, MD (1 shared paper) and Sue Gail Eckhardt, MD (1 shared paper).
What insurance does Dr. Clifford F. Quan accept?
Dr. Quan is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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