1. Home
  2. Directory
  3. California
  4. San Ramon
  5. Internal Medicine
  6. NPI Profile

WILLIAM PATRICK JOSEPH M.D.
NPI 1356423255
Internal Medicine - Infectious Disease in San Ramon, CA

Active since October 19, 2006Opted out of Medicare · through Feb 17, 2027
5601 NORRIS CANYON RD, SUITE #220, SAN RAMON, CA 94583(925) 277-2050(925) 275-1018 Get Directions Write a Review

NPPES record last updated: April 19, 2022. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About William Patrick Joseph M.d. NPPES

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

WILLIAM PATRICK JOSEPH M.D. (NPI 1356423255) is an individual infectious disease provider in San Ramon, California, licensed in California (G27536) and active in the NPI registry since October 2006. He has opted out of Medicare through February 17, 2027 and remains eligible to order and refer.

NPPES Registry Identity

NPI1356423255
Entity TypeIndividualMale
Primary Taxonomy207RI0200X
Provider Legal NameWILLIAM PATRICK JOSEPHCredential: M.D.
Location Address5601 NORRIS CANYON RD, SUITE #220San Ramon, CA 94583-5407
Mailing Address12677 Alcosta Blvd Ste 378San Ramon, CA 94583-4410 · (925) 858-3912 · Fax (925) 275-1018
Phone(925) 277-2050
Fax(925) 275-1018
Sole ProprietorYes
Enumeration DateOctober 19, 2006
Last NPPES UpdateApril 19, 2022
NPPES CertifiedApril 19, 2022
✔ NPI 1356423255 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
License✔ Licensed in CA · G27536
Definition

An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.

5601 NORRIS CANYON RD, San Ramon, CA 94583
Open in Google Maps ↗

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

ⓘ

Opted out of Medicare

William Patrick Joseph M.d. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from February 17, 2013 through February 17, 2027.

Opt-Out Effective DateFebruary 17, 2013
Opt-Out In Effect ThroughFebruary 17, 2027Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94583 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 20

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

DR. FREDERICK ANDERSON ROWE III M.D.
Internal Medicine (Gastroenterology)
5601 NORRIS CANYON RD, SUITE # 240
SAN RAMON, CA 94583
Contra Costa County (925) 901-1303
F. ANDERSON ROWE, M.D. INC.
Internal Medicine (Gastroenterology)
5601 NORRIS CANYON RD, SUITE # 240
SAN RAMON, CA 94583
Contra Costa County (925) 901-1303
HOWARD M SOKOLOFF, DPM,MS,INC
Podiatrist (Foot & Ankle Surgery)
5601 NORRIS CANYON RD, SUITE 240
SAN RAMON, CA 94583
Contra Costa County (925) 830-2929
DOUGLAS SEVERANCE M.D.
Family Medicine
5601 NORRIS CANYON RD, 330
SAN RAMON, CA 94583
Contra Costa County (925) 275-0400
AENOR JANIEL SAWYER MD
Orthopaedic Surgery
5601 NORRIS CANYON RD, SUITE 100
SAN RAMON, CA 94583
Contra Costa County (925) 866-2660
PLEASANT CARE MEDICAL ASSOCIATES
Family Medicine
5601 NORRIS CANYON RD, SUITE 140
SAN RAMON, CA 94583
Contra Costa County (925) 830-0644
TSULING CHANG M.D.
Dermatology
5601 NORRIS CANYON RD
SAN RAMON, CA 94583
Contra Costa County (925) 866-6680
LAUREN ANN ALEXANDER RN, MSN, ANP-BC
Registered Nurse (General Practice)
5601 NORRIS CANYON RD, SUITE 340
SAN RAMON, CA 94583
Contra Costa County (925) 866-8080

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 William Joseph's NPI number?

The NPI number for William Joseph is 1356423255. It was assigned to this individual provider in the NPPES registry on October 19, 2006.

Where is William Joseph located?

William Joseph practices at 5601 Norris Canyon Rd Suite #220, San Ramon, CA 94583. The listed phone number is (925) 277-2050.

What is William Joseph's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Is William Joseph enrolled in Medicare?

No. William Joseph has opted out of Medicare through February 17, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

When was this NPI record last updated?

The NPPES record for William Joseph was last updated on April 19, 2022. NPI Profile syncs with the weekly NPPES data releases published by CMS.