Steven Wayne York
Internal Medicine Physician · Northridge, CA
Steven Wayne York is an internal medicine physician with a practice address in Northridge, California, and NPI 1124035894, issued on Aug 2, 2006. Check the license (California A25716, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Steven Wayne York
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A25716 CA
Self-reported in NPPES; status is on the state search - Practice location
- 18250 Roscoe Blvd, Northridge, CA 91325
- Phone
- (661) 272-0240
- Enumerated
- Aug 2, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 18250 Roscoe Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Steven Wayne York in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A25716Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
25% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,381 Medicare Part D claims for 171 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 56 claims were for opioids.
Most prescribed
- Atorvastatin Calcium159 claims
- Metformin Hcl104 claims
- Levothyroxine Sodium96 claims
- Amlodipine Besylate84 claims
- Lisinopril81 claims
- Gabapentin56 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.
Steven Wayne York among 17,696 internal medicine physician records in California
Steven Wayne York 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2007 · 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).
38 internal medicine physician records list a practice address in Northridge
They are 38 of the 2,598 NPPES records with a practice address in Northridge, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Northridge → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Masoud Azizad, MDNorthridge, CA 913251033174826
- Christopher Buttelman, MDNorthridge, CA 913251437128840
- Christopher Chow, MDNorthridge, CA 913251528024122
- Samuel Feizi, MDNorthridge, CA 913251356389274
- Lev Gelman, MDNorthridge, CA 913251851356018
- William Josephson, MDNorthridge, CA 913251376647651
- Shahid Khan, MDNorthridge, CA 913251770518771
- Daniel Lewis, MD.Northridge, CA 913251508974718
Common questions
What is Steven Wayne York's NPI number?
Steven Wayne York's National Provider Identifier (NPI) is 1124035894, issued on Aug 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Steven Wayne York located?
The NPPES record lists a practice address at 18250 Roscoe Blvd, Northridge, CA, 91325. Phone: (661) 272-0240. Providers update this record themselves, so call before visiting.
How can I verify Steven Wayne York's license?
NPPES lists California license number A25716, 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 Steven Wayne York prescribe under Medicare Part D?
In 2024, Steven Wayne York had 2,381 Medicare Part D claims for 171 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.