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MAY CHENG-SU CHEN MD
NPI 1386603447
Internal Medicine - Medical Oncology in Campbell, CA

Active since March 18, 2006PECOS EnrolledAccepts Medicare Assignment
50 E HAMILTON AVE, STE 200, CAMPBELL, CA 95008(408) 376-2300(408) 376-2316 Get Directions Write a Review

NPPES record last updated: October 22, 2007. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About May Cheng-su Chen Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MAY CHENG-SU CHEN MD (NPI 1386603447) is an individual medical oncology provider in Campbell, California, licensed in California (G83884) and active in the NPI registry since March 2006. She is enrolled in Medicare PECOS and is a graduate of Yale University School Of Medicine (1993).

NPPES Registry Identity

NPI1386603447
Entity TypeIndividualFemale
Primary Taxonomy207RX0202X
Provider Legal NameMAY CHENG-SU CHENCredential: MD
Location Address50 E HAMILTON AVE, STE 200Campbell, CA 95008
Mailing Address50 E Hamilton Ave, Ste 200Campbell, CA 95008 · (408) 376-2300 · Fax (408) 376-2316
Phone(408) 376-2300
Fax(408) 376-2316
Sole ProprietorNo
Medical School CMSYale University School Of MedicineGraduated 1993
Enumeration DateMarch 18, 2006
Last NPPES UpdateOctober 22, 2007
✔ NPI 1386603447 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RX0202X
License✔ Licensed in CA · G83884
Definition
An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.
50 E HAMILTON AVE, Campbell, CA 95008
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Other Identifiers 3

Medicaid00G838840CA
Medicare UPINH53665CA
Medicare PIN00G838840CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

May Cheng-su Chen Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5991762072
PECOS Enrollment IDI20041210000590
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 8

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
508 services282 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
501 services337 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
76 services76 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
73 services35 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
37 services37 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
23 services23 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95008 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$206.04 typical visit price
range $70.37 – $206.04
Typical copayment $51.51 (range $17.59 – $51.51)
Most-billed visit code 99205
Established Patient
$121.77 typical visit price
range $23.96 – $169.60
Typical copayment $30.44 (range $5.99 – $42.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 3

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Capecitabine, oral, 500 mg J8521
Treatment-Treatment - Miscellaneous · category RX029N
5 suppliers30 claims1,856 services$0.75 avg. paid by Medicare
Breast prosthesis, silicone or equal, without integral adhesive L8030
DME-Orthotic Devices · category DF000N
2 suppliers11 claims13 services$278.08 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period Q0511
Treatment-Chemotherapy · category RH012N
4 suppliers22 claims22 services$18.92 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 11

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DIANA FAYE FINK M.D
Emergency Medicine
50 E HAMILTON AVE, # 100
CAMPBELL, CA 95008
Santa Clara County (408) 364-7600
ANNE RIEKO UYEI MD
Internal Medicine (Hematology & Oncology)
50 E HAMILTON AVE, STE 200
CAMPBELL, CA 95008
Santa Clara County (408) 376-2300
NATHALIE ANNE BROPHY MD
Internal Medicine (Medical Oncology)
50 E HAMILTON AVE, STE 200
CAMPBELL, CA 95008
Santa Clara County (408) 376-2300
CHRISTIAN JAMES FULMER DO
Family Medicine
50 E HAMILTON AVE, SUITE 120
CAMPBELL, CA 95008
Santa Clara County (408) 995-5453
SOUTHBAY ONCOLOGY HEMATOLOGY PARTNERS MEDICAL ASSOCIATES
Internal Medicine (Hematology & Oncology)
50 E HAMILTON AVE, STE 200
CAMPBELL, CA 95008
Santa Clara County (408) 376-2300
MARTIN DONALD RUBENSTEIN MD
Internal Medicine (Medical Oncology)
50 E HAMILTON AVE, STE 200
CAMPBELL, CA 95008
Santa Clara County (408) 376-2300
TINNY DOHN D.O
Family Medicine
50 E HAMILTON AVE, # 100
CAMPBELL, CA 95008
Santa Clara County (408) 364-7600
UNIVERSITY HEALTHCARE ALLIANCE
Internal Medicine
50 E HAMILTON AVE, SUITE 200
CAMPBELL, CA 95008
Santa Clara County (510) 974-8258

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is May Chen's NPI number?

The NPI number for May Chen is 1386603447. It was assigned to this individual provider in the NPPES registry on March 18, 2006.

Where is May Chen located?

May Chen practices at 50 E Hamilton Ave Ste 200, Campbell, CA 95008. The listed phone number is (408) 376-2300.

What is May Chen's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

Is May Chen enrolled in Medicare?

Yes. May Chen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for May Chen was last updated on October 22, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.