Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William Tham, MD

Pain Medicine (Physical Medicine & Rehabilitation) Physician in Annapolis, MD · enumerated 2005.

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

National Provider Identifier

1114917937

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name William Tham

Credential MD

Sex Male

Practice address 2002 Medical Pkwy, Suite 430, Annapolis, MD, 21401

Phone (410) 266-2700

Fax (410) 269-1149

Enumeration date Oct 24, 2005

Last updated in NPPES Jan 24, 2008

Taxonomy & licenses

2081P2900X Pain Medicine (Physical Medicine & Rehabilitation) Physician Allopathic & Osteopathic Physicians · License D40561 (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
52125237	Other	MD	MD BLUE SHIELD
63990	Other	MD	MAMSI HEALTH PLANS
4139559	Other	-	AETNA
C4750001	Other	DC	DC BLUE SHIELD

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

Is NPI 1114917937 active?

Yes, as of the latest NPPES snapshot, NPI 1114917937 is active (record last updated 2008-01-24).

How do I verify William Tham's NPI record?

Cross-check NPI 1114917937 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-01-24.