Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Maxwell B. Merkow MD, A Medical Corporation

Neurological Surgery Physician in Walnut Creek, CA · enumerated 2017 · authorized official Maxwell Merkow, Owner/President.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1598290769

Verified

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Registry record

Entity type Organization (Type 2)

Legal business name Maxwell B. Merkow MD, A Medical Corporation

Practice address 130 La Casa Via Bldg 2#110, Walnut Creek, CA, 94598

Phone (925) 309-5155

Enumeration date Apr 26, 2017

Last updated in NPPES Mar 17, 2018

Taxonomy & classification

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License A141272 (PA) Primary

Authorized official

Name Maxwell Merkow

Title Owner/President

Phone (925) 309-5155

Other identifiers

Identifier	Type	State	Issuer
A141272	Other	CA	LICENSE NUMBER

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What type of organization is Maxwell B. Merkow MD, A Medical Corporation?

Maxwell B. Merkow MD, A Medical Corporation is registered in NPPES as a Neurological Surgery Physician (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-03-17.