Dr. Jeff C. Kwok, DO
- Medicare services, 2024
- 136
- Medicare patients, 2024
- 219
- Publications
- 1
- Hospital affiliations
- 2
- Industry payments
- $265
- Practice address
- 2540 East St, Concord, CA 94520
- Practice phone
- Call (925) 682-8200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Kwok'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. Jeff C. Kwok is an anesthesiologist in Concord, California
Dr. Kwok practices at Concord Medical Center in Concord, California, part of John Muir Health.
Dr. Kwok's NPI, 1932421344, was assigned on February 26, 2010. Dr. Kwok graduated from Touro University California - Vallejo in 2007. Dr. Kwok holds California license 10697.
- NPI
- 1932421344NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8022251099
- NPI enumeration date
- February 26, 2010
- NPI status
- Active
- Practice phone
- (925) 682-8200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Jeff C. Kwok practices at Concord Medical Center in Concord, California
Dr. Kwok's primary practice is Concord Medical Center, at 2540 East St, Concord, CA 94520 in Contra Costa County. The practice phone is (925) 682-8200.
- Concord Medical Center2540 East St, Concord, CA 94520 · Contra Costa CountyPhone(925) 682-8200
Source: Dmand AI Affiliation Data
Dr. Jeff C. Kwok is affiliated with 2 sites of care and 3 medical groups
Dr. Kwok's primary practice is Concord Medical Center in Concord, California, part of John Muir Health. Dr. Kwok is also affiliated with John Muir Medical Center, Walnut Creek. The medical group on file is CEP America. Dmand AI also links Dr. Kwok to 2 more medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Jeff C. Kwok's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kwok practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Concord Medical Center | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across John Muir Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Jeff C. Kwok is one of 6,593 anesthesiologists in California
Anesthesiology is Dr. Kwok's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Kwok is board certified in anesthesiology by the American Board of Anesthesiology. Dr. Kwok is licensed in California.
Specialties and state licenses
- Anesthesiology, CaliforniaPrimary
Anesthesiologists near Dr. Kwok
Counts of anesthesiologists 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. Jeff C. Kwok billed Medicare for 136 services in 2024
CMS data shows 136 Medicare services from Dr. Kwok across 6 procedure codes in 2024, for 219 Medicare patients. Medicare paid $17,159 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Kwok's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 722024: 703%
- Anesthesia
- 2023: 612024: 668%
Dr. Kwok compared with the California median for anesthesiologists, 2024
- Dr. Kwok
- California median
- Medicare services
- 136vs 7289% above
- Medicare patients
- 219vs 14353% above
Medians across 5,562 anesthesiologists in California with Dmand AI profiles that report each measure.
Dr. Kwok'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.
Need commercial claims for Dr. Kwok?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Kwok and other anesthesiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jeff C. Kwok treated 219 Medicare patients in 2024, average age 76
CMS counts 219 Medicare patients who saw Dr. Kwok in 2024. The largest group is 65 to 74, with 87 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 24% are also on Medicaid. Their average risk score is 1.79, 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. Kwok's median patient age at 62, with 50% women.
Dr. Kwok's Medicare patients by age, 2024
Dr. Kwok's Medicare patients by sex, 2024
- Women12457%
- Men9543%
Chronic conditions among Dr. Kwok's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis66%
- Atrial fibrillation36%
- Mood disorders36%
- Diabetes35%
- Chronic kidney disease33%
- Depression33%
Share of Medicare patients with each condition. A patient can have several.
Dr. Kwok's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women50%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
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Dr. Jeff C. Kwok has 1 publication on record
Dmand AI links 1 paper to Dr. Kwok.
Recent publications by Dr. Kwok
See who Dr. Kwok researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Kwok works with, so you can find a warm path to the right anesthesiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Jeff C. Kwok received $265 in industry payments from 2016 to 2023
CMS Open Payments shows 5 general payments to Dr. Kwok from 4 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 100% of the total. Halyard Health, Inc. paid the most, $135.
General payments to Dr. Kwok by program year, 2016 to 2023
Companies that paid Dr. Kwok the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Jeff C. Kwok graduated from Touro University California - Vallejo
Dr. Kwok graduated from Touro University California - Vallejo in 2007.
- Medical school
- Board certified in anesthesiology
- Board certified in 2009 - 2026
- Board certified in 2009 - 2012
- Board certified in 2012 - 2013
Source: Dmand AI Professional Profile Data
Dr. Jeff C. Kwok accepts plans from 1 insurance carrier
Dr. Kwok is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
- CMS Medicare
Source: Dmand AI Insurance Network Data
Sources for Dr. Jeff C. Kwok'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) |
| 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) |
| 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. Jeff C. Kwok
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. Jeff C. Kwok's NPI number?
Dr. Jeff C. Kwok's NPI number is 1932421344. It was assigned on February 26, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Jeff C. Kwok?
Dr. Jeff C. Kwok is an anesthesiologist in Concord, California. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Jeff C. Kwok practice?
Dr. Kwok practices at 2540 East St, Concord, CA 94520. Dr. Kwok's primary practice is Concord Medical Center in Concord, California, part of John Muir Health. Dmand AI also links Dr. Kwok to 2 medical groups.
What is Dr. Jeff C. Kwok's office phone number?
The practice phone on file for Dr. Kwok is (925) 682-8200.
What is Dr. Jeff C. Kwok's medical license number?
Dr. Kwok holds California license 10697.
Which hospitals is Dr. Jeff C. Kwok affiliated with?
Dr. Kwok practices at Concord Medical Center in Concord, California. Dr. Kwok is also affiliated with John Muir Medical Center, Walnut Creek.
What medical group is Dr. Jeff C. Kwok part of?
Dr. Kwok is linked to CEP America. Dmand AI links Dr. Kwok to 2 more medical groups.
Does Dr. Jeff C. Kwok accept Medicare?
Yes. CMS data shows Dr. Kwok billed Medicare for 136 services in 2024.
How many Medicare patients does Dr. Jeff C. Kwok see?
CMS counts 219 Medicare patients who saw Dr. Kwok in 2024, with an average age of 76.
Is Dr. Jeff C. Kwok board certified?
Yes. Dr. Kwok is board certified in anesthesiology by the American Board of Anesthesiology.
Show 6 more questionsShow fewer questions
What services does Dr. Jeff C. Kwok bill to Medicare?
In 2024, Dr. Kwok's most billed Medicare services were surgery: brain, spine and nerves (64447), anesthesia (00731) and surgery: brain, spine and nerves (64415).
Where did Dr. Jeff C. Kwok go to medical school?
Dr. Kwok graduated from Touro University California - Vallejo in 2007.
Has Dr. Jeff C. Kwok received payments from drug or device companies?
CMS Open Payments shows $265 in general payments to Dr. Kwok from 4 companies from 2016 to 2023. The largest total came from Halyard Health, Inc.
How long has Dr. Jeff C. Kwok been practicing?
Dr. Kwok graduated from medical school in 2007, 19 years ago.
Does Dr. Jeff C. Kwok do research?
Dmand AI links 1 publication to Dr. Kwok.
What insurance does Dr. Jeff C. Kwok accept?
Dr. Kwok is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
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