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CORNERSTONE INTEGRATIVE MEDICINE
NPI 1881249332
Internal Medicine in Oakland, CA

Active since August 01, 2019
3012 SUMMIT ST STE 2675, OAKLAND, CA 94609(510) 869-6740(510) 869-6742 Get Directions Write a Review

NPPES record last updated: August 12, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 12, 2026, Apr 8, 2021, Aug 1, 2019 (3 updates tracked since 2019).

About Cornerstone Integrative Medicine NPPES

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

CORNERSTONE INTEGRATIVE MEDICINE (NPI 1881249332) is a healthcare organization registered as an internal medicine in Oakland, California and active in the NPI registry since August 2019. The organization lists Amy Li Matecki, Ceo Partner, Co-owner, as its authorized official.

NPPES Registry Identity

NPI1881249332
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameCORNERSTONE INTEGRATIVE MEDICINE
Location Address3012 SUMMIT ST STE 2675Oakland, CA 94609-3480
Mailing Address3012 Summit St Ste 2675Oakland, CA 94609-3480 · (510) 326-4649
Phone(510) 869-6740
Fax(510) 869-6742
Organization SubpartNo
Authorized OfficialAmy Li MateckiCeo Partner, Co-owner · (510) 869-6740
Enumeration DateAugust 1, 2019
Last NPPES UpdateAugust 12, 20263 updates tracked since enumeration
NPPES CertifiedAugust 12, 2026
✔ NPI 1881249332 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
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.
Also ListedAcupuncturistTaxonomy 171100000X
3012 SUMMIT ST STE 2675, Oakland, CA 94609
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Other Identifiers 10

Medicaid1346573094CA
Medicaid1790937506CA
Medicaid1932538121CA
Medicaid1831124080CA
Medicaid1861427684CA
Medicaid1770571077CA
Medicaid1245404607TN
Medicaid1558678201CA
Medicaid1003114463CA
Medicaid1295995256CA

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Cornerstone Integrative Medicine is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Cornerstone Integrative Medicine, which bills Medicare for the services this clinician delivers.

Clinician (1)

Amy Matecki, MD
Internal Medicine
NPI 1770571077
3012 SUMMIT ST STE 2675
Oakland, CA 94609
(510) 869-6740
✔ 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 Cornerstone Integrative Medicine's NPI number?

The NPI number for Cornerstone Integrative Medicine is 1881249332. It was assigned to this organization in the NPPES registry on August 1, 2019.

Where is Cornerstone Integrative Medicine located?

Cornerstone Integrative Medicine is located at 3012 Summit St Ste 2675, Oakland, CA 94609. The listed phone number is (510) 869-6740.

What is Cornerstone Integrative Medicine's specialty?

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

Is Cornerstone Integrative Medicine enrolled in Medicare?

Yes. Cornerstone Integrative Medicine is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Cornerstone Integrative Medicine?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Cornerstone Integrative Medicine. 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 Cornerstone Integrative Medicine was last updated on August 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.