Dr. Mary R. Kwaan, MD, MPH
- Medicare services, 2024
- 242
- Medicare patients, 2024
- 158
- Part D claims, 2024
- 124
- Publications
- 25
- MIPS score, 2024
- 93
- Practice address
- 200 Medical Plz, Los Angeles, CA 90024
- Practice phone
- Call (310) 794-9206
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Peter Morton UCLA Medical Building
Los Angeles, 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. Mary R. Kwaan is a colorectal surgeon in Los Angeles, California
Dr. Kwaan practices at Peter Morton UCLA Medical Building in Los Angeles, California.
Dr. Kwaan's NPI, 1588732911, was assigned on December 2, 2006. Dr. Kwaan graduated from Harvard Medical School in 2001. Dr. Kwaan holds California license C154058.
- NPI
- 1588732911NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1456404870
- NPI enumeration date
- December 2, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (310) 794-9206
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mary R. Kwaan practices at Peter Morton UCLA Medical Building in Los Angeles, California
Dr. Kwaan's primary practice is Peter Morton UCLA Medical Building, at 200 Medical Plz, Los Angeles, CA 90024 in Los Angeles County. The practice phone is (310) 794-9206.
- Peter Morton UCLA Medical Building200 Medical Plz, Los Angeles, CA 90024 · Los Angeles CountyPhone(310) 794-9206
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mary R. Kwaan is affiliated with 5 sites of care and 1 medical group
Dr. Kwaan's primary practice is Peter Morton UCLA Medical Building in Los Angeles, California. Dr. Kwaan is also affiliated with Ronald Reagan UCLA Medical Center. The medical group on file is UCLA Associated General Surgeons. Dmand AI also links Dr. Kwaan to 1 more hospital, 1 group practice or clinic and 1 home health agency, 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. Mary R. Kwaan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kwaan practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Peter Morton UCLA Medical Building | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mary R. Kwaan is one of 187 colorectal surgeons in California
Colon and rectal surgery is Dr. Kwaan's primary specialty in the NPI Registry, under taxonomy code 208C00000X. Dr. Kwaan is board certified in colon & rectal surgery by the American Board of Colon and Rectal Surgery. Dmand AI has Dr. Kwaan's licenses on file in 3 states: California, Minnesota and Massachusetts.
Specialties and state licenses
- Colon and rectal surgery, CaliforniaPrimary
- Minnesota license
- Massachusetts license
Clinical focus
Dmand AI lists colonoscopy, colon removal, gastrointestinal bleeding, gastrointestinal obstruction, hemorrhoids and intestinal or bowel obstruction among the conditions Dr. Kwaan treats.
Colorectal surgeons near Dr. Kwaan
Counts of colorectal surgeons 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. Mary R. Kwaan billed Medicare for 242 services in 2024
CMS data shows 242 Medicare services from Dr. Kwaan across 7 procedure codes in 2024, for 158 Medicare patients. Medicare paid $27,457 for them. Every service was in an office.
Dr. Kwaan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1702024: 1753%
- Surgery
- 2023: 692024: 673%
Dr. Kwaan compared with the California median for colorectal surgeons, 2024
- Dr. Kwaan
- California median
- Medicare services
- 242vs 27010% below
- Medicare patients
- 158vs 155Close to median
- Part D claims
- 66vs 717% below
Medians across 175 colorectal surgeons in California with Dmand AI profiles that report each measure.
Dr. Kwaan'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. Kwaan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Kwaan and other colorectal surgeons in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mary R. Kwaan treated 158 Medicare patients in 2024, average age 74
CMS counts 158 Medicare patients who saw Dr. Kwaan in 2024. The largest group is 65 to 74, with 69 patients. 75% of them have high cholesterol, and 68% have high blood pressure. 23% are also on Medicaid. Their average risk score is 1.71, 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 54, with 54% women.
Dr. Kwaan's Medicare patients by age, 2024
Dr. Kwaan's Medicare patients by sex, 2024
- Women9661%
- Men6239%
Chronic conditions among Dr. Kwaan's Medicare patients, 2024
- High cholesterol75%
- High blood pressure68%
- Arthritis58%
- Cancer36%
- Ischemic heart disease34%
- Anxiety32%
- Mood disorders32%
- Depression30%
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 54
Patient panel by sex, all payers
- Women54%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mary R. Kwaan wrote 124 Medicare Part D claims in 2024
In 2024, Dr. Kwaan wrote 124 Medicare Part D claims for 49 patients. 96% of them were for generic drugs. CMS names the drug for 66 of them, across 3 drugs with 11 or more claims each, at $880 in total drug cost. In 2023, CMS named 47 claims across 3 drugs.
Dr. Kwaan's Part D claims by kind of drug, 2024
- Generic119 claims96%
- Brand-name and other5 claims4%
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
- Opioids12%15 of 124 claims
- Antibiotics42%52 of 124 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: 472024: 6640%
Drugs named by CMS: 3 in 2024, 3 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
Dr. Mary R. Kwaan scored 93 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 93 out of 100 for Dr. Kwaan for performance year 2024, reported as part of a group. Dr. Kwaan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Kwaan as offering telehealth. CMS counts 19 procedures of colonoscopy by Dr. Kwaan, more than 47% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Kwaan's MIPS scores, performance year 2024
- 93of 100Final score
- 69.8of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 82of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Kwaan ranks in Medicare procedure volume
- Colonoscopy
- 47th percentile19 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Mary R. Kwaan has 25 publications on record
Dmand AI links 25 papers to Dr. Kwaan, published from 2011 to 2022. 2013 was the busiest year, with 4. Dr. Kwaan's most frequent co-authors are Robert David Madoff, MD, David A. Rothenberger, MD and Christopher Jen-Hung Chow, MD.
Dr. Kwaan's papers by year, 2011 to 2022
Dr. Kwaan's most frequent co-authors
- Robert David Madoff, MD8 shared papers
- David A. Rothenberger, MD6 shared papers
- Christopher Jen-Hung Chow, MD4 shared papers
Recent publications by Dr. Kwaan
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 colorectal surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Mary R. Kwaan received $323 in industry payments from 2019 to 2022
CMS Open Payments shows 3 general payments to Dr. Kwaan from 3 drug and device companies from 2019 to 2022. Food and beverage make up the largest share, 100% of the total. Prescient Surgical paid the most, $274.
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. Mary R. Kwaan graduated from Harvard Medical School
Dr. Kwaan graduated from Harvard Medical School in 2001.
- Medical school
- Board certified in colon & rectal surgery
- Board certified in surgery
Source: Dmand AI Professional Profile Data
Dr. Mary R. Kwaan accepts plans from 14 insurance carriers
Dr. Kwaan is in network with 14 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. HMO plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Elevance
- Regence Health Plans
- Alliant Health Plans
- +6 more carriersWith a free account
Plan types Dr. Kwaan accepts, by number of carriers
- HMO7
- Medicare7
- PPO7
- EPO4
- POS3
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Mary R. 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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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. Mary R. 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. Mary R. Kwaan's NPI number?
Dr. Mary R. Kwaan's NPI number is 1588732911. It was assigned on December 2, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mary R. Kwaan?
Dr. Mary R. Kwaan is a colorectal surgeon in Los Angeles, California. The primary specialty in the NPI Registry is Colon & Rectal Surgery Physician (taxonomy code 208C00000X).
Where does Dr. Mary R. Kwaan practice?
Dr. Kwaan practices at 200 Medical Plz, Los Angeles, CA 90024. Dr. Kwaan's primary practice is Peter Morton UCLA Medical Building in Los Angeles, California. Dmand AI also links Dr. Kwaan to 1 hospital, 1 group practice or clinic and 1 home health agency.
What is Dr. Mary R. Kwaan's office phone number?
The practice phone on file for Dr. Kwaan is (310) 794-9206.
What is Dr. Mary R. Kwaan's medical license number?
Dr. Kwaan holds California license C154058, one of the licenses on file in 3 states.
Which states has Dr. Mary R. Kwaan been licensed in?
Dmand AI has state licenses on file for Dr. Kwaan in California (2018 to 2026), Minnesota (2009 to 2018) and Massachusetts (2003 to 2015).
Which hospitals is Dr. Mary R. Kwaan affiliated with?
Dr. Kwaan is affiliated with Ronald Reagan UCLA Medical Center. Dmand AI links Dr. Kwaan to 1 more hospital.
What medical group is Dr. Mary R. Kwaan part of?
Dr. Kwaan is linked to UCLA Associated General Surgeons.
Does Dr. Mary R. Kwaan accept Medicare?
Yes. CMS data shows Dr. Kwaan billed Medicare for 242 services in 2024, and Dr. Kwaan accepts Medicare assignment.
Does Dr. Mary R. Kwaan offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Kwaan as offering telehealth services.
Show 11 more questionsShow fewer questions
What is Dr. Mary R. Kwaan's MIPS score?
Dr. Kwaan's MIPS final score for performance year 2024 is 93 out of 100, reported as part of a group.
How many Medicare patients does Dr. Mary R. Kwaan see?
CMS counts 158 Medicare patients who saw Dr. Kwaan in 2024, with an average age of 74.
Is Dr. Mary R. Kwaan board certified?
Yes. Dr. Kwaan is board certified in colon & rectal surgery by the American Board of Colon and Rectal Surgery.
What services does Dr. Mary R. Kwaan bill to Medicare?
In 2024, Dr. Kwaan's most billed Medicare services were surgery: digestive system (46600), office visit, established patient (99214) and office visit, established patient (99213).
Where did Dr. Mary R. Kwaan go to medical school?
Dr. Kwaan graduated from Harvard Medical School in 2001.
What drugs does Dr. Mary R. Kwaan prescribe most?
In 2024 Medicare Part D data, Dr. Kwaan's most prescribed drugs by claims were Metronidazole, Neomycin Sulfate and Lidocaine.
Has Dr. Mary R. Kwaan received payments from drug or device companies?
CMS Open Payments shows $323 in general payments to Dr. Kwaan from 3 companies from 2019 to 2022. The largest total came from Prescient Surgical.
How long has Dr. Mary R. Kwaan been practicing?
Dr. Kwaan graduated from medical school in 2001, 25 years ago.
Does Dr. Mary R. Kwaan do research?
Dmand AI links 25 publications to Dr. Kwaan, published from 2011 to 2022.
Who does Dr. Mary R. Kwaan publish with?
Dr. Kwaan's most frequent co-authors are Robert David Madoff, MD (8 shared papers), David A. Rothenberger, MD (6 shared papers) and Christopher Jen-Hung Chow, MD (4 shared papers).
What insurance does Dr. Mary R. Kwaan accept?
Dr. Kwaan is in network with 14 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. HMO plans come from the most carriers, 7. Check the plan with the practice before a visit.
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