Cho May, M.D
Internal Medicine Physician · Simi Valley, CA
Cho May, M.D is an internal medicine physician with a practice address in Simi Valley, California, and NPI 1063805331, issued on Mar 11, 2015. Check the license (California A155306, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Cho May
- Credential
- M.D
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- A155306 CA
MT207789 PA
Self-reported in NPPES; status is on the state search - Practice location
- 2975 Sycamore Dr, Simi Valley, CA 93065
- Phone
- (626) 944-5144
- Enumerated
- Mar 11, 2015
- Record last updated
- Oct 15, 2024
- Medicare enrollment
- Enrolled (PECOS I20220126002908); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 2975 Sycamore Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Lorraine Burke, MS, RDRegistered Dietitian1770966129
- Jennifer Christeson, LCSWClinical Social Worker1881856235
Verify Cho May in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A155306Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average internal medicine physician in 2024
737 Medicare Part D claims for 509 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Baclofen66 claims
- Ibuprofen61 claims
- Albuterol Sulfate Hfa51 claims
- Cephalexin45 claims
- Doxycycline Hyclate39 claims
- Amoxicillin29 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.
Bills Medicare through 3 group practices
- Apollomed Hospitalists A Medical CorporationMonterey Park, CA
- Pih Health PhysiciansLos Angeles, CA
- Southern California Permanente Medical GroupPanorama City, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Cho May among 17,696 internal medicine physician records in California
Cho May, M.D is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 76% of them.
- NPI issued2015 · 76% of these records are older, 21% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2007 · median 2004 among the 11,065 with a school on file
- Record last updated2024 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
25 internal medicine physician records list a practice address in Simi Valley
They are 25 of the 1,397 NPPES records with a practice address in Simi Valley, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Simi Valley → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- George Dichter, M.D.Simi Valley, CA 930651841265261
- Gurdip Flora, M.DSimi Valley, CA 930651164611075
- Chandrashekhar Joshi, MDSimi Valley, CA 930651215049374
- Charles Kennedy, MDSimi Valley, CA 930651942576111
- William Lee, MDSimi Valley, CA 930651619960705
- Mojgan Makhsoosi, M.D. INC.Simi Valley, CA 930651346218658
- Smita Mandal, M.D.Simi Valley, CA 930651285876854
- William Matzner, M.D., PH.D.Simi Valley, CA 930651306905716
Common questions
What is Cho May, M.D's NPI number?
Cho May, M.D's National Provider Identifier (NPI) is 1063805331, issued on Mar 11, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Cho May, M.D located?
The NPPES record lists a practice address at 2975 Sycamore Dr, Simi Valley, CA, 93065. Phone: (626) 944-5144. Providers update this record themselves, so call before visiting.
How can I verify Cho May, M.D's license?
NPPES lists California license number A155306, 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 Cho May, M.D prescribe under Medicare Part D?
In 2024, Cho May, M.D had 737 Medicare Part D claims for 509 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.