Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Joanna B Tyzack, MD

Endocrinology, Diabetes & Metabolism Physician in Timonium, MD · enumerated 2005.

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

National Provider Identifier

1487659892

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Registry record

Entity type Individual (Type 1)

Name Dr. Joanna B Tyzack

Credential MD

Sex Female

Practice address 1 Texas Station Ct, Suite 300, Timonium, MD, 21093

Phone (410) 828-7417

Fax (410) 828-4695

Enumeration date Jun 14, 2005

Last updated in NPPES May 9, 2025

Taxonomy & licenses

207RE0101X Endocrinology, Diabetes & Metabolism Physician Allopathic & Osteopathic Physicians · License D42383 (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
203561600	Medicaid	MD	-

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

How do I verify Joanna Tyzack's NPI record?

Cross-check NPI 1487659892 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1487659892 active?

Yes, as of the latest NPPES snapshot, NPI 1487659892 is active (record last updated 2025-05-09).

Other providers at this practice address

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Ruth Horowitz Endocrinology, Diabetes & Metabolism Physician · Timonium, MD NPI 1003811423 Mark Bradford Medical Physician Assistant · Timonium, MD NPI 1831137611 Meena Khan Endocrinology, Diabetes & Metabolism Physician · Timonium, MD NPI 1831200203 Nishi Das Internal Medicine Physician · Lutherville Timonium, MD NPI 1730240284 Albert H Dudley III MD LLC Specialist · Timonium, MD NPI 1790848760 Jeffrey Mindel Endocrinology, Diabetes & Metabolism Physician · Timonium, MD NPI 1821133091 Ashley Davidson Endocrinology, Diabetes & Metabolism Physician · Timonium, MD NPI 1457481947 Tamara Irby Physical Therapist · Timonium, MD NPI 1588796916

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-05-09.