Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Thomas John Lang, M.D.

Rheumatology Physician in Columbia, MD · enumerated 2006 · practices at Arthritis Care Specialists of Maryland, P.A..

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

National Provider Identifier

1457312332

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Registry record

Entity type Individual (Type 1)

Name Dr. Thomas John Lang

Credential M.D.

Sex Male

Practice address 6350 Stevens Forest Rd Ste 101, Columbia, MD, 21046

Phone (410) 992-7440

Fax (443) 276-0349

Enumeration date Mar 30, 2006

Last updated in NPPES Sep 8, 2023

Taxonomy & licenses

207RR0500X Rheumatology Physician Allopathic & Osteopathic Physicians · License D0052541 (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
BL5654719	Other	MD	DEA
D0052541	Other	MD	STATE LICENSE
296100800	Medicaid	MD	-
M43719	Other	MD	CDS

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

What specialty is Thomas Lang?

Thomas Lang is registered in NPPES with the primary taxonomy of Rheumatology 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.

Other providers at this practice address

Browse all →

Arthritis Care Specialists of Maryland, P.A. Rheumatology Physician · Columbia, MD NPI 1639153521 Stephen George Rheumatology Physician · Columbia, MD NPI 1386628055 Marlyn Lorenzo Rheumatology Physician · Columbia, MD NPI 1639107097 Shabnam Ali Rheumatology Physician · Columbia, MD NPI 1487837837 Moe Zan Rheumatology Physician · Columbia, MD NPI 1831365378 Alyssa Chin Physician Assistant · Columbia, MD NPI 1659816890

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-09-08.