Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Ronald Lawrence Ginsberg, MD

Gastroenterology Physician in Baltimore, MD · enumerated 2005.

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

National Provider Identifier

1801877758

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Registry record

Entity type Individual (Type 1)

Name Dr. Ronald Lawrence Ginsberg

Credential MD

Sex Male

Practice address 19 Walker Ave, Suite 302, Baltimore, MD, 21208

Phone (410) 484-4840

Fax (410) 484-1084

Enumeration date Nov 8, 2005

Last updated in NPPES Jul 9, 2007

Taxonomy & licenses

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License D14133 (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
G3470001	Other	DC	CAREFIRST PROVIDER NUMBER
06227	Other	MD	AMERIGROUP PROVIDER NUMBE
2997934	Other	MD	AETNA HMO PROVIDER NUMBER
413358	Other	MD	MAMSI PROVIDER NUMBER
4281798	Other	MD	AETNA PPO PROVIDER NUMBER
KCW5	Other	MD	CAREFIRST PROVIDER 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 specialty is Ronald Ginsberg?

Ronald Ginsberg is registered in NPPES with the primary taxonomy of Gastroenterology 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 2007-07-09.