May Shu Chen, MD
Nephrology Physician · Mission Viejo, CA
May Shu Chen, MD is a nephrology physician with a practice address in Mission Viejo, California, and NPI 1881772887, issued on Nov 1, 2006. Check the license (California G78591, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- May Shu Chen
- Credential
- MD
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- G78591 CA
Self-reported in NPPES; status is on the state search - Practice location
- 26800 Crown Valley Pkwy, Mission Viejo, CA 92691
- Phone
- (949) 364-0644
- Enumerated
- Nov 1, 2006
- Record last updated
- Jan 23, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (949) 364-1520
- Medicare enrollment
- Enrolled (PECOS I20040810001380); accepts Medicare assignment
- Medical or professional school
- University Of Chicago, Pritzker School Of Medicine, 1992
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,468 in California → Look up another NPI →
Also registered at 26800 Crown Valley Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Soodabeh Abravesh, M.D.Obstetrics & Gynecology Physician1376785865
- Matt Ahmadi, D.P.M.Foot & Ankle Surgery Podiatrist1285635144
- Jennifer Altamira, ACNPAcute Care Nurse Practitioner1205815248
- Habib Azad, M.D.Nephrology Physician1114962610
- Bahman Badie, M.D.Internal Medicine Physician1396721916
- Mehrnaz Badie, M.D.Internal Medicine Physician1831212885
Verify May Shu Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G78591Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2% more Medicare Part D claims than the average nephrology physician in 2024
1,501 Medicare Part D claims for 219 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Amlodipine Besylate95 claims
- Losartan Potassium93 claims
- Hydralazine Hcl76 claims
- Furosemide68 claims
- Metoprolol Succinate58 claims
- Atorvastatin Calcium57 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.
Industry payments in 2024: $980.97
42 payments; by number, the most common kind was food and beverage; the largest payer was Vifor Pharma, Inc. The 8,230 providers of this specialty with any payment received $3,091.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Providence Medical FoundationFullerton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
May Shu Chen among 1,468 nephrology physician records in California
May Shu Chen, MD is one of 1,468 nephrology physician records with a practice address in California. 88% 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, 48% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated1992 · median 2001 among the 1,128 with a school on file
- Record last updated2013 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in California
There are 1,468 nephrology physician records in California.
All 1,468 in California → Every provider in Mission Viejo → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Habib Azad, M.D.Mission Viejo, CA 926911114962610
- Magdy Nawar, MDMission Viejo, CA 926911881799096
- David Packard, MDMission Viejo, CA 926911558307173
- Steve Tran, MDMission Viejo, CA 926911487722732
- Wei Ling Lau, M.D.Irvine, CA 926971558572032
- Tuan Nguyen, DOWestminster, CA 926831164959185
- Minh Do, M.D.Santa Ana, CA 927031619964368
- Nama Beck, M.D.Santa Ana, CA 927051740245281
Common questions
What is May Shu Chen, MD's NPI number?
May Shu Chen, MD's National Provider Identifier (NPI) is 1881772887, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is May Shu Chen, MD located?
The NPPES record lists a practice address at 26800 Crown Valley Pkwy, Mission Viejo, CA, 92691. Phone: (949) 364-0644. Providers update this record themselves, so call before visiting.
How can I verify May Shu Chen, MD's license?
NPPES lists California license number G78591, 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 May Shu Chen, MD prescribe under Medicare Part D?
In 2024, May Shu Chen, MD had 1,501 Medicare Part D claims for 219 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
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.