NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Gabriel A Martinez Geigel, MD

Pain Medicine (Physical Medicine & Rehabilitation) Physician in Baltimore, MD · enumerated 2007.

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

National Provider Identifier

1457481194

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Registry record

Entity type Individual (Type 1)
Name Gabriel A Martinez Geigel
Credential MD
Sex Male
Practice address Baltimore, MD, 21237
Fax (410) 687-3805
Enumeration date Mar 6, 2007
Last updated in NPPES Jun 27, 2017

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

2081P2900X Pain Medicine (Physical Medicine & Rehabilitation) Physician Allopathic & Osteopathic Physicians · License D30809 (MD) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
225911 Other - MAMSI
4369602 Other - AETNA
378921700 Medicaid MD -

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 specialty is Gabriel Martinez Geigel?
Gabriel Martinez Geigel is registered in NPPES with the primary taxonomy of Pain Medicine (Physical Medicine & Rehabilitation) Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-06-27.