William Kenneth Halliday, M.D.
Cardiovascular Disease Physician · Montebello, CA
William Kenneth Halliday, M.D. is a cardiovascular disease physician with a practice address in Montebello, California, and NPI 1013021708, issued on Aug 18, 2006. Check the license (California A23526, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- William Kenneth Halliday
- Credential
- M.D.
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- A23526 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2444 W Beverly Blvd, Montebello, CA 90640
- Phone
- (323) 201-4130
- Enumerated
- Aug 18, 2006
- Record last updated
- Aug 29, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (323) 201-4134
- Medicare enrollment
- Enrolled (PECOS I20060508000705); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 2,574 in California → Look up another NPI →
Also registered at 2444 W Beverly Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Heain Aung, FNP-CNurse Practitioner1457969032
- Esmeralda Galaviz, MS, RDNRegistered Dietitian1225545080
- Liliane Idylle, D.O.Internal Medicine Physician1114298957
- Cathy Liang, FNPFamily Nurse Practitioner1669215745
- Blanca Torres, N.P.Family Nurse Practitioner1487078952
- Simon WongPhysician Assistant1669878906
Verify William Kenneth Halliday in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A23526Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
21% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
2,442 Medicare Part D claims for 420 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 30% of claims.
Most prescribed
- Eliquis531 claims
- Metoprolol Succinate237 claims
- Carvedilol190 claims
- Atorvastatin Calcium132 claims
- Losartan Potassium111 claims
- Entresto104 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: $17.83
1 payment: food and beverage; the largest payer was Pfizer Inc. The 16,686 providers of this specialty with any payment received $3,819.56 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
- Albion Medical Partners OF California West PCCerritos, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Kenneth Halliday among 2,574 cardiovascular disease physician records in California
William Kenneth Halliday, M.D. is one of 2,574 cardiovascular disease physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 45% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated1968 · median 1999 among the 1,742 with a school on file
- Record last updated2019 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in California
There are 2,574 cardiovascular disease physician records in California.
All 2,574 in California → Every provider in Montebello → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Mir Ali, M.D.Montebello, CA 906401295759694
- Kamlesh Dhawan, MDMontebello, CA 906401821023540
- Phillip Harding, M.D.Montebello, CA 906401326296880
- Iftikhar Khan, M. D.Montebello, CA 906401114095098
- Bao Yang, MDMontebello, CA 906401386657815
- Mohammed Khursheed, M.D.La Mirada, CA 906381053326793
- Nathapet Srinivasan, M.D.Norwalk, CA 906501316029853
- Rex Winters, MDCypress, CA 906301477584191
Common questions
What is William Kenneth Halliday, M.D.'s NPI number?
William Kenneth Halliday, M.D.'s National Provider Identifier (NPI) is 1013021708, issued on Aug 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Kenneth Halliday, M.D. located?
The NPPES record lists a practice address at 2444 W Beverly Blvd, Montebello, CA, 90640. Phone: (323) 201-4130. Providers update this record themselves, so call before visiting.
How can I verify William Kenneth Halliday, M.D.'s license?
NPPES lists California license number A23526, 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 William Kenneth Halliday, M.D. prescribe under Medicare Part D?
In 2024, William Kenneth Halliday, M.D. had 2,442 Medicare Part D claims for 420 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. 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.