Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

J.Douglas Clark, MD PC

Q: What type of organization is J.Douglas Clark, MD PC?

J.Douglas Clark, MD PC is registered in NPPES as a Critical Care Medicine (Internal Medicine) Physician (its primary provider taxonomy).

Critical Care Medicine (Internal Medicine) Physician in Spartanburg, SC · enumerated 2007 · authorized official Darla Brown, Office Manager.

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

National Provider Identifier

1730229808

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Registry record

Entity type Organization (Type 2)

Legal business name J.Douglas Clark, MD PC

Practice address 2030 North Church Place, Spartanburg, SC, 29303

Phone (864) 582-6858

Fax (864) 585-0999

Enumeration date Feb 7, 2007

Last updated in NPPES Jun 11, 2012

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 19596 (SC) Secondary

207RC0200X Critical Care Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 19596 (SC) Primary

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License 19596 (SC) Secondary

207RS0012X Sleep Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 19596 (SC) Secondary

Authorized official

Name Darla Brown

Title Office Manager

Phone (864) 582-6858

Other identifiers

Identifier	Type	State	Issuer
290009501	Other	SC	RAILROAD
8688	Other	SC	MBPG'S
T3660	Medicaid	SC	-

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 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.

What type of organization is J.Douglas Clark, MD PC?

J.Douglas Clark, MD PC is registered in NPPES as a Critical Care Medicine (Internal Medicine) Physician (its primary provider taxonomy).

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-06-11.