Mary R. Kwaan, M.D., M.P.H.
Colon & Rectal Surgery Physician · Los Angeles, CA
Mary R. Kwaan, M.D., M.P.H. is a colon & rectal surgery physician with a practice address in Los Angeles, California, and NPI 1588732911, issued on Dec 2, 2006. Check the license (California C154058, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mary R. Kwaan
- Credential
- M.D., M.P.H.
- Primary taxonomy
- Colon & Rectal Surgery Physician 208C00000X
- License number
- C154058 CA
Self-reported in NPPES; status is on the state search - Practice location
- 200 Ucla Medical Plz Ste 214, Los Angeles, CA 90095
- Phone
- (310) 794-7788
- Enumerated
- Dec 2, 2006
- Record last updated
- Dec 26, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (310) 794-4337
- Medicare enrollment
- Enrolled (PECOS I20180308002011); accepts Medicare assignment
- Medical or professional school
- Harvard Medical School, 2001
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest colon & rectal surgery physician records → All 198 in California → Look up another NPI →
Also registered at 200 Ucla Medical Plz Ste 214
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Danica Adkins, NPAcute Care Nurse Practitioner1306243860
- Sherona Bau, N.P.Acute Care Nurse Practitioner1902056062
- Simon Beaven, MDInternal Medicine Physician1205018967
- Ronald Busuttil, MDTransplant Surgery Physician1639103906
- Sabrinah ChristieSurgery Physician1154625440
- Erin Colantuono, NPAcute Care Nurse Practitioner1922436500
Verify Mary R. Kwaan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C154058Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
35% fewer Medicare Part D claims than the average colon & rectal surgery physician in 2024
124 Medicare Part D claims for 49 beneficiaries, against an average of 192 among the 1,836 providers of this specialty who prescribed in Part D. 15 claims were for opioids.
Most prescribed
- Metronidazole27 claims
- Neomycin Sulfate21 claims
- Lidocaine18 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 88.9 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Ucla Associated General SurgeonsLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary R. Kwaan among 198 colon & rectal surgery physician records in California
Mary R. Kwaan, M.D., M.P.H. is one of 198 colon & rectal surgery physician records with a practice address in California. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 57% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated2001 · median 2002 among the 149 with a school on file
- Record last updated2019 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208C00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Colon & Rectal Surgery Physician providers in California
There are 198 colon & rectal surgery physician records in California.
All 198 in California → Every provider in Los Angeles → Colon & Rectal Surgery Physician nationwide →
The 8 colon & rectal surgery physician records with the nearest ZIP codes
- Kevork Kazanjian, M.D.Los Angeles, CA 900951053591941
- Clifford Ko, MDLos Angeles, CA 900951023198769
- Anne Lin, MDLos Angeles, CA 900951437358884
- Marcia Russell, MDLos Angeles, CA 900951346398245
- Marjun Duldulao, M.D.Los Angeles, CA 900891063684850
- Adrian Ortega, M.D.Los Angeles, CA 900891386920718
- Phillip Fleshner, MDLos Angeles, CA 900481881695286
- Mari Madsen, M.D.West Hollywood, CA 900481942286638
Common questions
What is Mary R. Kwaan, M.D., M.P.H.'s NPI number?
Mary R. Kwaan, M.D., M.P.H.'s National Provider Identifier (NPI) is 1588732911, issued on Dec 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mary R. Kwaan, M.D., M.P.H. located?
The NPPES record lists a practice address at 200 Ucla Medical Plz Ste 214, Los Angeles, CA, 90095. Phone: (310) 794-7788. Providers update this record themselves, so call before visiting.
How can I verify Mary R. Kwaan, M.D., M.P.H.'s license?
NPPES lists California license number C154058, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mary R. Kwaan, M.D., M.P.H. prescribe under Medicare Part D?
In 2024, Mary R. Kwaan, M.D., M.P.H. had 124 Medicare Part D claims for 49 beneficiaries; the average among colon & rectal surgery physician prescribers was 192. Part D covers Medicare prescriptions only.
What is Mary R. Kwaan, M.D., M.P.H.'s MIPS final score?
The 2023 MIPS final score is 88.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.