Willy Singh, D.O.
Nephrology Physician · Whittier, CA
Willy Singh, D.O. is a nephrology physician with a practice address in Whittier, California, and NPI 1265587075, issued on Jan 24, 2007. Check the license (California 20A11778, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Willy Singh
- Credential
- D.O.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License numbers
- 20A11778 CA
5399 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 12401 Washington Blvd, Whittier, CA 90602
- Phone
- (562) 698-0811
- Enumerated
- Jan 24, 2007
- Record last updated
- Apr 26, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicaid ID
- 502403 AZ
- Medicare enrollment
- Enrolled (PECOS I20121121000550); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,468 in California → Look up another NPI →
Also registered at 12401 Washington Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Anas Abu-Khader, MDInternal Medicine Physician1881180784
- Johanna Aceves, NPNurse Practitioner1841415502
- Kariann Akiyama, MS, RDN, CNSCRegistered Dietitian1639870009
- Syed Ali, MDAnesthesiology Physician1295775625
- Jamee Ambariantz, PAPhysician Assistant1790726123
- Talin Azilazyan, PHARMDPharmacist1700739372
Verify Willy Singh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A11778Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
26% fewer Medicare Part D claims than the average nephrology physician in 2024
1,087 Medicare Part D claims for 135 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D.
Most prescribed
- Hydralazine Hcl91 claims
- Furosemide72 claims
- Amlodipine Besylate71 claims
- Prosol70 claims
- Nifedipine Er59 claims
- Farxiga50 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: $179.44
5 payments; by number, the most common kind was food and beverage; the largest payer was Aurinia Pharma U.S., 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
- Kidney Specialists Medical CorporationMontebello, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Willy Singh among 1,468 nephrology physician records in California
Willy Singh, D.O. 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 2007, is newer than 52% of them.
- NPI issued2007 · 52% of these records are older, 35% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2005 · median 2001 among the 1,128 with a school on file
- Record last updated2016 · 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 Whittier → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Riad Darwish, M.D.Whittier, CA 906021366459208
- Kevin Huang, M.D.Whittier, CA 906021275540114
- Jennifer Imparato, DOWhittier, CA 906021770786469
- Grace Lin, M.D.Whittier, CA 906021114167178
- Shahriare Nasser-Moaddeli, M.D.Whittier, CA 906021902811391
- Binoy Shah, MDWhittier, CA 906021326629718
- Jayakumar Vidhun, M.D.Whittier, CA 906021275685638
- Dilpreet Julka, M.D.Whittier, CA 906031033296629
Common questions
What is Willy Singh, D.O.'s NPI number?
Willy Singh, D.O.'s National Provider Identifier (NPI) is 1265587075, issued on Jan 24, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Willy Singh, D.O. located?
The NPPES record lists a practice address at 12401 Washington Blvd, Whittier, CA, 90602. Phone: (562) 698-0811. Providers update this record themselves, so call before visiting.
How can I verify Willy Singh, D.O.'s license?
NPPES lists California license number 20A11778, 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 Willy Singh, D.O. prescribe under Medicare Part D?
In 2024, Willy Singh, D.O. had 1,087 Medicare Part D claims for 135 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.