Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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William Cooper Longton, MD

Individual provider Anesthesiology Physician · NPI 1275625204

William Cooper Longton, MD is a Pain Management in Walnut Creek, California. Graduated from University of Arizona College of Medicine in 1989, 37 years ago. Practices with Bass Medical Group, a 292-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
37
Trained at
University of Arizona College of Medicine
Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1601 Ygnacio Valley Rd
Walnut Creek, CA 94598-3122
Phone: (925) 939-3000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence G71946 (CA)

Record details

NPI number1275625204
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 28, 2006
Last updated in NPPESJune 16, 2016

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPAIN MANAGEMENT
Medical schoolUNIVERSITY OF ARIZONA COLLEGE OF MEDICINE
Graduated 1989 (37 years in practice)
Group practice Bass Medical Group — 292 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations7 on file with Medicare

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