Irene Ang Dy, MD
Hematology (Internal Medicine) Physician · Castro Valley, CA
Irene Ang Dy, MD is a hematology (internal medicine) physician with a practice address in Castro Valley, California, and NPI 1528393063, issued on Oct 15, 2009. Check the license (California A120038, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Irene Ang Dy
- Credential
- MD
- Primary taxonomy
- Hematology (Internal Medicine) Physician 207RH0000X
- License number
- A120038 CA
Self-reported in NPPES; status is on the state search - Practice location
- 20055 Lake Chabot RD Ste 130, Castro Valley, CA 94546
- Phone
- (510) 888-0657
- Enumerated
- Oct 15, 2009
- Record last updated
- Oct 16, 2024
- Medicare enrollment
- Enrolled (PECOS I20200814001548); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 20055 Lake Chabot RD Ste 130
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Juliet Fong, PA-CPhysician Assistant1639968670
- Nitin Joshi, M.D.Hematology (Internal Medicine) Physician1154541423
- Mahboub Noori, MDHematology & Oncology Physician1831695915
- Arpeet Shah, M.D.Medical Oncology Physician1558780825
- Kathryn Simms, NPNurse Practitioner1447770359
- Usha Sunkara, M.D,Hematology & Oncology Physician1346267028
Verify Irene Ang Dy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A120038Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
53% fewer Medicare Part D claims than the average hematology (internal medicine) physician in 2024
233 Medicare Part D claims for 66 beneficiaries, against an average of 496 among the 1,036 providers of this specialty who prescribed in Part D.
Most prescribed
- Anastrozole35 claims
- Letrozole17 claims
- Hydroxyurea15 claims
- Tamoxifen Citrate12 claims
- Alendronate Sodium11 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: $651.51
14 payments; by number, the most common kind was food and beverage; the largest payer was Secura Bio, Inc. The 721 providers of this specialty with any payment received $13,778.35 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.
One hospital affiliation
- Kadlec Regional Medical CenterKennewick, WA · Acute Care Hospitals4 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Hematology (Internal Medicine) Physician providers in California
There are 175 hematology (internal medicine) physician records in California.
Other hematology (internal medicine) physician records in California
- John Adamson, MDSan Diego, CA1477504801
- Mhd Monzr Al Malki, M.D.Duarte, CA1043489362
- Ibrahim Aldoss, M.D.Duarte, CA1861692485
- Haris Ali, M.D.Duarte, CA1467672907
- Julio Alvarenga Thiebaud, M.D.Irvine, CA1457770497
- Joseph Alvarnas, M.D.Duarte, CA1558321745
- Idoroenyi Amanam, M.D.Duarte, CA1205257920
- Sally Arai, MDStanford, CA1881739530
- Ahmed Aribi, MDDuarte, CA1912024910
- Andrew Artz, M.D., M.S.Duarte, CA1306859772
Common questions
What is Irene Ang Dy, MD's NPI number?
Irene Ang Dy, MD's National Provider Identifier (NPI) is 1528393063, issued on Oct 15, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Irene Ang Dy, MD located?
The NPPES record lists a practice address at 20055 Lake Chabot RD Ste 130, Castro Valley, CA, 94546. Phone: (510) 888-0657. Providers update this record themselves, so call before visiting.
How can I verify Irene Ang Dy, MD's license?
NPPES lists California license number A120038, 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 Irene Ang Dy, MD prescribe under Medicare Part D?
In 2024, Irene Ang Dy, MD had 233 Medicare Part D claims for 66 beneficiaries; the average among hematology (internal medicine) physician prescribers was 496. 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.