Stephen Martin Knox, MD
Internal Medicine Physician · Oakland, CA
Stephen Martin Knox, MD is an internal medicine physician with a practice address in Oakland, California, and NPI 1255439345, issued on Sep 20, 2006. Check the license (California G063555, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Stephen Martin Knox
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G063555 CA
Self-reported in NPPES; status is on the state search - Practice location
- 400 30TH St Ste 300, Oakland, CA 94609
- Phone
- (510) 628-0949
- Enumerated
- Sep 20, 2006
- Record last updated
- May 8, 2024
- Fax
- (510) 628-0947
- Medicaid ID
- 00G063555 CA
- Entity
- Type 1 · individual
Also registered at 400 30TH St Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Wilsen Lance CalaguasPharmacist1033061031
- Alberletia Joseph, NURSE PRACTITIONERNurse Practitioner1114418209
- Sean LuisAdult Health Nurse Practitioner1417320433
- William Stewart, RPHPharmacist1184231961
- Cindy TranPharmacist1386272821
- Sandra Win, M.D.Family Medicine Physician1497800718
Verify Stephen Martin Knox in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G063555Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
39% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,922 Medicare Part D claims for 62 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 34% of claims. 28 claims were for opioids.
Most prescribed
- Biktarvy171 claims
- Lisinopril64 claims
- Metformin Hcl64 claims
- Descovy61 claims
- Rosuvastatin Calcium59 claims
- Gabapentin57 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: $163.59
5 payments; by number, the most common kind was food and beverage; the largest payer was ViiV Healthcare Company. The 50,334 providers of this specialty with any payment received $1,303.06 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.
432 internal medicine physician records list a practice address in Oakland
They are 432 of the 18,558 NPPES records with a practice address in Oakland, and 17,696 internal medicine physician records in California.
All 432 in Oakland → All 17,696 in California → Every provider in Oakland →
Other internal medicine physician records in California
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- Alistair Aaronson, MDStanford, CA1457628760
- Jose Abad., MDSacramento, CA1144607219
- Donna Abare, MDOakland, CA1386722155
- Marce AbareScotts Valley, CA1457744708
- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Stephen Martin Knox, MD's NPI number?
Stephen Martin Knox, MD's National Provider Identifier (NPI) is 1255439345, issued on Sep 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Martin Knox, MD located?
The NPPES record lists a practice address at 400 30TH St Ste 300, Oakland, CA, 94609. Phone: (510) 628-0949. Providers update this record themselves, so call before visiting.
How can I verify Stephen Martin Knox, MD's license?
NPPES lists California license number G063555, 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 Stephen Martin Knox, MD prescribe under Medicare Part D?
In 2024, Stephen Martin Knox, MD had 1,922 Medicare Part D claims for 62 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.