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

Dr. Jason Lee Massa, DO

Individual provider Neurology Physician · NPI 1841636156

Dr. Jason Lee Massa, DO is a Neurology in Walnut Creek, California. Qualified in 2013, 13 years ago. Practices with East Bay Neurology Inc, a 7-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
13
Licensed in
CA
In the registry since
2013
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

675 Ygnacio Valley Rd Ste A102
Walnut Creek, CA 94596-3882
Phone: (925) 938-5252
Fax: (925) 938-1343
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Neurology Physician (primary) Taxonomy 2084N0400X · Licence 20A13615 (CA)

Record details

NPI number1841636156
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMay 14, 2013
Last updated in NPPESOctober 2, 2020
Certification dateOctober 2, 2020
Mailing address675 Ygnacio Valley Rd, Ste A102, Walnut Creek, CA 94596-3882

Medicare enrollment

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

Medicare specialtyNEUROLOGY
Medical schoolOTHER
Graduated 2013 (13 years in practice)
Group practice East Bay Neurology Inc — 7 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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