Dr. May Shu Chen, MD
- Medicare services, 2024
- 1,477
- Medicare patients, 2024
- 429
- Part D claims, 2024
- 1,501
- Hospital affiliations
- 2
- Industry payments
- $6,774
- Practice address
- 23141 Plaza Pointe Drive, Laguna Hills, CA 92653
- Practice phone
- Call (949) 588-9211
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
DaVita Saddleback Dialysis
Dialysis Center - Independent · Laguna Hills, California
Find Dr. Chen'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. May Shu Chen is a nephrologist in Laguna Hills, California
Dr. Chen practices at DaVita Saddleback Dialysis in Laguna Hills, California.
Dr. Chen's NPI, 1881772887, was assigned on November 1, 2006. Dr. Chen graduated from Pritzker School of Medicine in 1992. Dr. Chen's California license number on file is G78591.
- NPI
- 1881772887NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0547232571
- NPI enumeration date
- November 1, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (949) 588-9211
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. May Shu Chen practices at DaVita Saddleback Dialysis in Laguna Hills, California
Dr. Chen's primary practice is DaVita Saddleback Dialysis, at 23141 Plaza Pointe Drive, Laguna Hills, CA 92653 in Orange County. The practice phone is (949) 588-9211.
- DaVita Saddleback Dialysis23141 Plaza Pointe Drive, Laguna Hills, CA 92653 · Orange CountyPhone(949) 588-9211
Source: Dmand AI Affiliation Data
Dr. May Shu Chen is affiliated with 6 sites of care and 1 medical group
Dr. Chen's primary practice is DaVita Saddleback Dialysis in Laguna Hills, California. Dr. Chen is also affiliated with MemorialCare Saddleback Medical Center. The medical group on file is St. Jude Heritage Medical Group. Dmand AI also links Dr. Chen to 1 more hospital, 2 dialysis centers and 1 group practice or clinic, 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. May Shu Chen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chen practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| DaVita Saddleback Dialysis | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. May Shu Chen is one of 1,401 nephrologists in California
Nephrology is Dr. Chen's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Chen is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Chen's licenses on file in 2 states: California and Illinois.
Specialties and state licenses
- Nephrology, CaliforniaPrimary
- Illinois license
Clinical focus
Dmand AI lists acute kidney failure, chronic anemia, chronic kidney disease, fluid and electrolyte imbalances and kidney disease among the conditions Dr. Chen treats.
Nephrologists near Dr. Chen
Counts of nephrologists 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. May Shu Chen billed Medicare for 1,477 services in 2024
CMS data shows 1,477 Medicare services from Dr. Chen across 19 procedure codes in 2024, for 429 Medicare patients. Medicare paid $158,704 for them.
Dr. Chen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,1132024: 1,0545%
- Tests and treatments
- 2023: 2172024: 26623%
- Lab and pathology
- 2023: 4682024: 11176%
- Surgery
- 2023: 1902024: 4676%
Where Dr. Chen's Medicare services took place, 2024
- In an office83657%
- In a facility64143%
Dr. Chen compared with the California median for nephrologists, 2024
- Dr. Chen
- California median
- Medicare services
- 1,477vs 1,08436% above
- Medicare patients
- 429vs 30740% above
- Part D claims
- 1,158vs 95521% above
Medians across 1,355 nephrologists in California with Dmand AI profiles that report each measure.
Dr. Chen'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. Chen?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chen and other nephrologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. May Shu Chen treated 429 Medicare patients in 2024, average age 78
CMS counts 429 Medicare patients who saw Dr. Chen in 2024. The largest group is 75 to 84, with 165 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 12% are also on Medicaid. Their average risk score is 3.36, 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. Chen's median patient age at 72, with 46% women.
Dr. Chen's Medicare patients by age, 2024
Dr. Chen's Medicare patients by sex, 2024
- Women20548%
- Men22452%
Chronic conditions among Dr. Chen's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Diabetes51%
- Ischemic heart disease50%
- Heart failure45%
- Atrial fibrillation41%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women46%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. May Shu Chen wrote 1,501 Medicare Part D claims in 2024
In 2024, Dr. Chen wrote 1,501 Medicare Part D claims for 219 patients. 87% of them were for generic drugs. CMS names the drug for 1,158 of them, across 37 drugs with 11 or more claims each, at $88,823 in total drug cost. In 2023, CMS named 1,009 claims across 33 drugs.
Dr. Chen's Part D claims by kind of drug, 2024
- Generic1,310 claims87%
- Brand-name178 claims12%
- Other13 claims1%
Dr. Chen'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. Chen's Part D claims, 2024
- Antibiotics3%43 of 1,501 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: 1,0092024: 1,15815%
Drugs named by CMS: 37 in 2024, 33 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. May Shu Chen offers telehealth to Medicare patients
Dr. Chen accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Chen as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. May Shu Chen received $6,774 in industry payments from 2016 to 2025
CMS Open Payments shows 306 general payments to Dr. Chen from 28 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Relypsa, Inc. paid the most, $815.
General payments to Dr. Chen by program year, 2016 to 2025
Companies that paid Dr. Chen the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. May Shu Chen has 1 award and honors on record
Dmand AI lists 1 award for Dr. Chen.
Awards and honors for Dr. Chen
- Undated
- Checkbook Top Doc
Source: Dmand AI Professional Profile Data
Dr. May Shu Chen graduated from Pritzker School of Medicine
Dr. Chen graduated from Pritzker School of Medicine in 1992. Dr. Chen is a member of ACP.
- Medical school
- Board certified in internal medicine
- Board certified in nephrology
Source: Dmand AI Professional Profile Data
Dr. May Shu Chen accepts plans from 14 insurance carriers
Dr. Chen is in network with 14 carriers, including Elevance, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Humana
- Aetna
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- +6 more carriersWith a free account
Plan types Dr. Chen accepts, by number of carriers
- PPO10
- Medicare8
- HMO7
- EPO3
- POS3
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. May Shu Chen'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) |
| 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. May Shu Chen
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. May Shu Chen's NPI number?
Dr. May Shu Chen's NPI number is 1881772887. It was assigned on November 1, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. May Shu Chen?
Dr. May Shu Chen is a nephrologist in Laguna Hills, California. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. May Shu Chen practice?
Dr. Chen practices at 23141 Plaza Pointe Drive, Laguna Hills, CA 92653. Dr. Chen's primary practice is DaVita Saddleback Dialysis in Laguna Hills, California. Dmand AI also links Dr. Chen to 1 hospital, 2 dialysis centers and 1 group practice or clinic.
What is Dr. May Shu Chen's office phone number?
The practice phone on file for Dr. Chen is (949) 588-9211.
What is Dr. May Shu Chen's medical license number?
Dr. Chen's California license number on file is G78591, one of the licenses on file in 2 states.
Which states has Dr. May Shu Chen been licensed in?
Dmand AI has state licenses on file for Dr. Chen in California (1994 to 2025) and Illinois (1995 to 1999).
Which hospitals is Dr. May Shu Chen affiliated with?
Dr. Chen is affiliated with MemorialCare Saddleback Medical Center. Dmand AI links Dr. Chen to 1 more hospital.
What medical group is Dr. May Shu Chen part of?
Dr. Chen is linked to St. Jude Heritage Medical Group.
Does Dr. May Shu Chen accept Medicare?
Yes. CMS data shows Dr. Chen billed Medicare for 1,477 services in 2024, and Dr. Chen accepts Medicare assignment.
Does Dr. May Shu Chen offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Chen as offering telehealth services.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. May Shu Chen see?
CMS counts 429 Medicare patients who saw Dr. Chen in 2024, with an average age of 78.
Is Dr. May Shu Chen board certified?
Yes. Dr. Chen is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. May Shu Chen bill to Medicare?
In 2024, Dr. Chen's most billed Medicare services were hospital inpatient care (99232), office visit, established patient (99214) and office visit, established patient (99213).
Where did Dr. May Shu Chen go to medical school?
Dr. Chen graduated from Pritzker School of Medicine in 1992.
What drugs does Dr. May Shu Chen prescribe most?
In 2024 Medicare Part D data, Dr. Chen's most prescribed drugs by claims were Amlodipine Besylate, Losartan Potassium and Hydralazine HCl.
Has Dr. May Shu Chen received payments from drug or device companies?
CMS Open Payments shows $6,774 in general payments to Dr. Chen from 28 companies from 2016 to 2025. The largest total came from Relypsa, Inc.
How long has Dr. May Shu Chen been practicing?
Dr. Chen graduated from medical school in 1992, 34 years ago.
What insurance does Dr. May Shu Chen accept?
Dr. Chen is in network with 14 carriers, including Elevance, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
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