Dr. Nicholas J. Kwaan, MD
- Medicare services, 2022
- 28
- Medicare patients, 2024
- 18
- Part D claims, 2024
- 623
- Publications
- 7
- Hospital affiliations
- 1
- 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. Kwaan'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. Nicholas J. Kwaan is an internist in Richmond, California
Dr. Kwaan practices at Richmond Medical Center in Richmond, California.
Dr. Kwaan's NPI, 1952628828, was assigned on April 30, 2010. Dr. Kwaan graduated from Albert Einstein College of Medicine in 2010. Dr. Kwaan holds California license A119571.
- NPI
- 1952628828NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9335364140
- NPI enumeration date
- April 30, 2010
- 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
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Nicholas J. Kwaan practices at Richmond Medical Center in Richmond, California
Dr. Kwaan'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. Nicholas J. Kwaan is affiliated with 4 sites of care and 3 medical groups
Dr. Kwaan's primary practice is Richmond Medical Center in Richmond, California. Dr. Kwaan is also affiliated with Oakland Medical Center. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Kwaan to 2 more group practices and clinics and 2 medical groups, 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 Dr. Nicholas J. Kwaan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kwaan practices, 3 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 |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Nicholas J. Kwaan is one of 16,751 internists in California
Internal medicine is Dr. Kwaan's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Kwaan is board certified in critical care medicine by the American Board of Internal Medicine. Dr. Kwaan is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Dr. Kwaan
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. Nicholas J. Kwaan billed Medicare for 28 services in 2022
CMS data shows 28 Medicare services from Dr. Kwaan across 1 procedure code in 2022, for 18 Medicare patients. Medicare paid $1,776 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Kwaan's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 352022: 2820%
Dr. Kwaan compared with the California median for internists, 2022
- Dr. Kwaan
- California median
- Medicare services
- 28vs 36192% below
- Medicare patients
- 18vs 15188% below
- Part D claims
- 535vs 42127% above
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Kwaan's most billed Medicare procedure codes, 2022
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. Kwaan and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Nicholas J. Kwaan treated 18 Medicare patients in 2024, average age 69
CMS counts 18 Medicare patients who saw Dr. Kwaan in 2024. 75% of them have high blood pressure, and 61% have heart failure. Their average risk score is 3.82, 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. Kwaan's median patient age at 59, with 52% women.
Chronic conditions among Dr. Kwaan's Medicare patients, 2024
- High blood pressure75%
- Heart failure61%
Share of Medicare patients with each condition. A patient can have several.
Dr. Kwaan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women52%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Nicholas J. Kwaan wrote 623 Medicare Part D claims in 2024
In 2024, Dr. Kwaan wrote 623 Medicare Part D claims for 139 patients. 39% of them were for generic drugs. CMS names the drug for 535 of them, across 12 drugs with 11 or more claims each, at $1,081,503 in total drug cost. In 2023, CMS named 488 claims across 14 drugs.
Dr. Kwaan's Part D claims by kind of drug, 2024
- Generic243 claims39%
- Brand-name380 claims61%
Dr. Kwaan'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. Kwaan's Part D claims, 2024
- Antibiotics7%46 of 623 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: 4882024: 53510%
Drugs named by CMS: 12 in 2024, 14 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. Nicholas J. Kwaan takes part in Medicare
Dr. Kwaan 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. Nicholas J. Kwaan has 7 publications on record
Dmand AI links 7 papers to Dr. Kwaan, published from 2006 to 2024. 2024 was the busiest year, with 2. The most frequent topics are Acute Lung Injury, Blood Transfusion and Complement Activation. Dr. Kwaan has published most often in J Clin Invest. Dr. Kwaan's most frequent co-authors are Mark R. Looney, MD, Pearl T.c. Toy, MD and Daniel Russell Calabrese, MD.
Dr. Kwaan's papers by year, 2006 to 2024
Topics Dr. Kwaan writes about most
- Acute Lung Injury
- Blood Transfusion
- Complement Activation
- Isoantibodies
- Mice, Inbred BALB C
Dr. Kwaan's most frequent co-authors
- Mark R. Looney, MD5 shared papers
- Pearl T.c. Toy, MD2 shared papers
- Daniel Russell Calabrese, MD1 shared paper
Recent publications by Dr. Kwaan
Am J Med
See who Dr. Kwaan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Kwaan 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. Nicholas J. Kwaan received $67 in industry payments from 2019 to 2022
CMS Open Payments shows 3 general payments to Dr. Kwaan from 2 drug and device companies from 2019 to 2022. Food and beverage make up the largest share, 100% of the total. GlaxoSmithKline, LLC. paid the most, $36.
General payments to Dr. Kwaan by program year, 2019 to 2022
Companies that paid Dr. Kwaan the most, 2019 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Nicholas J. Kwaan graduated from Albert Einstein College of Medicine
Dr. Kwaan graduated from Albert Einstein College of Medicine in 2010.
- Medical school
- Board certified in critical care medicine
- Board certified in internal medicine
- Board certified in pulmonary disease
Source: Dmand AI Professional Profile Data
Dr. Nicholas J. Kwaan accepts plans from 7 insurance carriers
Dr. Kwaan is in network with 7 carriers, including Blue Cross Blue Shield of Michigan, Kaiser Permanente and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- Kaiser Permanente
- Blue Cross Blue Shield of Massachusetts
- Elevance
- HCSC
- Regence Health Plans
- CMS Medicare
Plan types Dr. Kwaan accepts, by number of carriers
- Medicare6
- PPO5
- HMO2
- POS2
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Nicholas J. Kwaan'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) |
| 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. Nicholas J. Kwaan
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. Nicholas J. Kwaan's NPI number?
Dr. Nicholas J. Kwaan's NPI number is 1952628828. It was assigned on April 30, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Nicholas J. Kwaan?
Dr. Nicholas J. Kwaan is an internist in Richmond, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Nicholas J. Kwaan practice?
Dr. Kwaan practices at 901 Nevin Ave, Richmond, CA 94801. Dr. Kwaan's primary practice is Richmond Medical Center in Richmond, California. Dmand AI also links Dr. Kwaan to 2 group practices and clinics and 2 medical groups.
What is Dr. Nicholas J. Kwaan's office phone number?
The practice phone on file for Dr. Kwaan is (510) 307-1555.
What is Dr. Nicholas J. Kwaan's medical license number?
Dr. Kwaan holds California license A119571.
Which hospitals is Dr. Nicholas J. Kwaan affiliated with?
Dr. Kwaan is affiliated with Oakland Medical Center.
What medical group is Dr. Nicholas J. Kwaan part of?
Dr. Kwaan is linked to The Permanente Medical Group, Inc. Dmand AI links Dr. Kwaan to 2 more medical groups.
Does Dr. Nicholas J. Kwaan accept Medicare?
Yes. CMS data shows Dr. Kwaan billed Medicare for 28 services in 2022, and Dr. Kwaan accepts Medicare assignment.
How many Medicare patients does Dr. Nicholas J. Kwaan see?
CMS counts 18 Medicare patients who saw Dr. Kwaan in 2024, with an average age of 69.
Is Dr. Nicholas J. Kwaan board certified?
Yes. Dr. Kwaan is board certified in critical care medicine by the American Board of Internal Medicine.
Show 8 more questionsShow fewer questions
What services does Dr. Nicholas J. Kwaan bill to Medicare?
In 2022, Dr. Kwaan's most billed Medicare services were hospital inpatient care (99232).
Where did Dr. Nicholas J. Kwaan go to medical school?
Dr. Kwaan graduated from Albert Einstein College of Medicine in 2010.
What drugs does Dr. Nicholas J. Kwaan prescribe most?
In 2024 Medicare Part D data, Dr. Kwaan's most prescribed drugs by claims were Albuterol Sulfate Hfa, Spiriva Respimat and Ofev.
Has Dr. Nicholas J. Kwaan received payments from drug or device companies?
CMS Open Payments shows $67 in general payments to Dr. Kwaan from 2 companies from 2019 to 2022. The largest total came from GlaxoSmithKline, LLC.
How long has Dr. Nicholas J. Kwaan been practicing?
Dr. Kwaan graduated from medical school in 2010, 16 years ago.
Does Dr. Nicholas J. Kwaan do research?
Dmand AI links 7 publications to Dr. Kwaan, published from 2006 to 2024.
Who does Dr. Nicholas J. Kwaan publish with?
Dr. Kwaan's most frequent co-authors are Mark R. Looney, MD (5 shared papers), Pearl T.c. Toy, MD (2 shared papers) and Daniel Russell Calabrese, MD (1 shared paper).
What insurance does Dr. Nicholas J. Kwaan accept?
Dr. Kwaan is in network with 7 carriers, including Blue Cross Blue Shield of Michigan, Kaiser Permanente and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
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