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JAMES SANTIAGO GRISOLIA, M.D. INC
NPI 1801933684
Psychiatry & Neurology - Neurology in San Diego, CA

Active since January 31, 2007
4033 3RD AVE STE 204, SAN DIEGO, CA 92103(619) 297-1155 Get Directions Write a Review

NPPES record last updated: March 26, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About James Santiago Grisolia, M.d. Inc NPPES

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

JAMES SANTIAGO GRISOLIA, M.D. INC (NPI 1801933684) is a healthcare organization registered as a neurology in San Diego, California and active in the NPI registry since January 2007. The organization lists James Santiago Grisolia, Present, as its authorized official.

NPPES Registry Identity

NPI1801933684
Entity TypeOrganization
Primary Taxonomy2084N0400X
Legal Business NameJAMES SANTIAGO GRISOLIA, M.D. INC
Location Address4033 3RD AVE STE 204San Diego, CA 92103-2130
Mailing Address4033 3rd Ave Ste 204San Diego, CA 92103-2130 · (619) 297-1155
Phone(619) 297-1155
Organization SubpartNo
Authorized OfficialJames Santiago GrisoliaPresent · (619) 297-1155
Enumeration DateJanuary 31, 2007
Last NPPES UpdateMarch 26, 2025
NPPES CertifiedMarch 26, 2025
✔ NPI 1801933684 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · NeurologyAllopathic & Osteopathic Physicians
Taxonomy Code2084N0400X
License✔ Licensed in CA · G42884
Definition
A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.
4033 3RD AVE STE 204, San Diego, CA 92103
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Other Identifiers 1

Medicaid00G428840CA

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

James Santiago Grisolia, M.d. Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by October 31, 2026

Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.

StateEnrollment IDDue date
StateCaliforniaEnrollment IDO20101021000537Non-DME Part B · Clinic/Group PracticeDue dateOctober 31, 2026
Source: CMS Revalidation Due Date List, October 2026 release.

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to James Santiago Grisolia, M.D. Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

James Grisolia, M.D.INC
Neurology
NPI 1336102359
4033 3RD AVE STE 204
San Diego, CA 92103
(619) 297-1155
✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 James Santiago Grisolia, M.D. Inc's NPI number?

The NPI number for James Santiago Grisolia, M.D. Inc is 1801933684. It was assigned to this organization in the NPPES registry on January 31, 2007.

Where is James Santiago Grisolia, M.D. Inc located?

James Santiago Grisolia, M.D. Inc is located at 4033 3rd Ave Ste 204, San Diego, CA 92103. The listed phone number is (619) 297-1155.

What is James Santiago Grisolia, M.D. Inc's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

Is James Santiago Grisolia, M.D. Inc enrolled in Medicare?

Yes. James Santiago Grisolia, M.D. Inc is registered in the Medicare PECOS enrollment system.

When is James Santiago Grisolia, M.D. Inc's Medicare revalidation due?

According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (California, Clinic/Group Practice) is due for revalidation by October 31, 2026. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.

How many clinicians bill Medicare through James Santiago Grisolia, M.D. Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Neurology) reassigns their Medicare billing to James Santiago Grisolia, M.D. Inc. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for James Santiago Grisolia, M.D. Inc was last updated on March 26, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.