STEPHEN MARTIN KNOX MD
NPI 1255439345
Internal Medicine in Oakland, CA

Active since September 20, 2006PECOS Enrolled
400 30TH ST STE 300, OAKLAND, CA 94609(510) 628-0949(510) 628-0947 Get Directions Write a Review

NPPES record last updated: May 8, 2024. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: May 8, 2024, Aug 3, 2022, Jul 18, 2017 and 1 more (4 updates tracked since 2017).

About Stephen Martin Knox Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

STEPHEN MARTIN KNOX MD (NPI 1255439345) is an individual internal medicine provider in Oakland, California, licensed in California (G063555) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS and maintains a secondary practice location in San Francisco.

NPPES Registry Identity

NPI1255439345
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameSTEPHEN MARTIN KNOXCredential: MD
Location Address400 30TH ST STE 300Oakland, CA 94609-3318
Mailing Address6255 W Sunset Blvd Fl 21Los Angeles, CA 90028-7422 · (323) 860-5200 · Fax (323) 467-7119
Fax(510) 628-0947
Sole ProprietorYes
Enumeration DateSeptember 20, 2006
Last NPPES UpdateMay 8, 20244 updates tracked since enumeration
NPPES CertifiedMay 8, 2024
NPI 1255439345 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License Licensed in CA · G063555
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
400 30TH ST STE 300, Oakland, CA 94609

Secondary Practice Location 1

Location 13838 California St, Suite 600San Francisco, CA 94118-1522 · Phone (415) 923-3528 · Fax (415) 668-7615

Other Identifiers 1

Medicaid00G063555CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare (PECOS)

Stephen Martin Knox Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
47 services21 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94609 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Pharmacist
400 30TH ST STE 300
OAKLAND, CA 94609
Nurse Practitioner
400 30TH ST STE 300
OAKLAND, CA 94609
Pharmacist
400 30TH ST STE 300
OAKLAND, CA 94609
Pharmacist
400 30TH ST STE 300
OAKLAND, CA 94609
Nurse Practitioner (Adult Health)
400 30TH ST STE 300
OAKLAND, CA 94609
Family Medicine
400 30TH ST STE 300
OAKLAND, CA 94609

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Stephen Knox's NPI number?

The NPI number for Stephen Knox is 1255439345. It was assigned to this individual provider in the NPPES registry on September 20, 2006.

Where is Stephen Knox located?

Stephen Knox practices at 400 30th St Ste 300, Oakland, CA 94609. The listed phone number is (510) 628-0949.

What is Stephen Knox's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Stephen Knox enrolled in Medicare?

Yes. Stephen Knox is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Stephen Knox was last updated on May 8, 2024. NPI Profile syncs with the weekly NPPES data releases published by CMS.