NPI Portal NPI Lookup & Verification

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

Dr. Marc Warren Bloom, D.C.

Rehabilitation Chiropractor in Ottsville, PA · enumerated 2006 · practices at Chironetics International Incorporated.

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

National Provider Identifier

1376502377

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Registry record

Entity type Individual (Type 1)
Name Dr. Marc Warren Bloom
Credential D.C.
Sex Male
Practice address Ottsville, PA, 18942
Phone (610) 847-9936
Fax (610) 847-9936
Enumeration date Mar 20, 2006
Last updated in NPPES Jul 19, 2012

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

Taxonomy & licenses

111NS0005X Sports Physician Chiropractor Chiropractic Providers · License DC002902L (PA) Secondary
111NR0400X Rehabilitation Chiropractor Chiropractic Providers · License DC002902L (PA) Primary
111NR0400X Rehabilitation Chiropractor Chiropractic Providers · License 1079 (MT) Secondary
111NS0005X Sports Physician Chiropractor Chiropractic Providers · License 1079 (MT) Secondary
111N00000X Chiropractor Chiropractic Providers · License 1079 (MT) Secondary
DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential

Other identifiers

Identifier Type State Issuer
000089742 Other PA HIGHMARK BLUE SHIELD ID
0023261000 Other PA BLUE CROSS HMO ID

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.

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Frequently asked questions

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.
What specialty is Marc Bloom?
Marc Bloom is registered in NPPES with the primary taxonomy of Rehabilitation Chiropractor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-07-19.