Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark P. Tanenbaum, M.D.

Cardiovascular Disease Physician in Fairfax, VA · enumerated 2005 · practices at The Cardiovascular Group, PC.

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

National Provider Identifier

1114929247

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Registry record

Entity type Individual (Type 1)

Name Mark P. Tanenbaum

Credential M.D.

Sex Male

Practice address 3580 Joseph Siewick Dr Ste 305, Fairfax, VA, 22033

Phone (703) 648-3266

Fax (703) 648-3264

Enumeration date Jun 1, 2005

Last updated in NPPES Aug 25, 2022

Taxonomy & licenses

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 0101043105 (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
031738500	Medicaid	DC	-
060035106	Other	DC	RAILROAD MEDICARE DC #
060062627	Other	VA	RAILROAD MEDICARE VA #
1114929247	Medicaid	VA	-
121300800	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

Is NPI 1114929247 active?

Yes, as of the latest NPPES snapshot, NPI 1114929247 is active (record last updated 2022-08-25).

How do I verify Mark Tanenbaum's NPI record?

Cross-check NPI 1114929247 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 →

Pradeep Nayak Cardiovascular Disease Physician · Fairfax, VA NPI 1922000181 Ketan Trivedi Cardiovascular Disease Physician · Fairfax, VA NPI 1457353583 Gautam Ramakrishna Cardiovascular Disease Physician · Fairfax, VA NPI 1801896097 Erin Simon Acute Care Nurse Practitioner · Fairfax, VA NPI 1316958176 Melissa Myers Adult Health Nurse Practitioner · Fairfax, VA NPI 1073694485 Mary Tisch Physician Assistant · Fairfax, VA NPI 1558566455 The Cardiovascular Group, PC Cardiovascular Disease Physician · Fairfax, VA NPI 1508009341 Cristobal Goa Cardiovascular Disease Physician · Fairfax, VA NPI 1528201993

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-08-25.