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

Dr. John Beveridge Parkerson Jr., M.D.

Preventive Medicine/Occupational Environmental Medicine Physician in Baltimore, MD · enumerated 2006.

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

National Provider Identifier

1730299678

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Registry record

Entity type Individual (Type 1)

Name Dr. John Beveridge Parkerson Jr.

Credential M.D.

Sex Male

Practice address Baltimore, MD, 21209

Phone (410) 366-3627

Fax (410) 366-1183

Enumeration date Aug 30, 2006

Last updated in NPPES Mar 7, 2023

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

Taxonomy & licenses

2083P0500X Preventive Medicine/Occupational Environmental Medicine Physician Allopathic & Osteopathic Physicians · License D32875 (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
C1-0005889	Other	DE	STATE PHYSICIAN LICENSE
D32875	Other	MD	STATE PHYSIAN LICENSE

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 is the NPI number for John Parkerson?

The National Provider Identifier (NPI) for John Parkerson is 1730299678, a Type 1 (individual) record in the CMS NPPES registry.

Where does John Parkerson practice?

The practice location on file with NPPES is in Baltimore, MD. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-07.