Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Michael Grundel Ison, M.D., M.S.

Q: What is the NPI number for Michael Ison?

The National Provider Identifier (NPI) for Michael Ison is 1316941222, a Type 1 (individual) record in the CMS NPPES registry.

Infectious Disease Physician in Falls Church, VA · enumerated 2005.

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

National Provider Identifier

1316941222

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Registry record

Entity type Individual (Type 1)

Name Dr. Michael Grundel Ison

Credential M.D., M.S.

Sex Male

Practice address 3300 Gallows Rd, Falls Church, VA, 22042

Phone (703) 776-4001

Fax (703) 776-7113

Enumeration date Jun 8, 2005

Last updated in NPPES Jul 8, 2024

Taxonomy & licenses

207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License 221230 (MA) Secondary

207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License 0101230684 (VA) 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
5862540	Medicaid	VA	-

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 is the NPI number for Michael Ison?

The National Provider Identifier (NPI) for Michael Ison is 1316941222, a Type 1 (individual) record in the CMS NPPES registry.

Where does Michael Ison practice?

The practice location on file with NPPES is in Falls Church, VA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-07-08.