NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Alan Keith Tannenbaum, M.D.

Cardiovascular Disease Physician in New Brunswick, NJ · enumerated 2006.

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

National Provider Identifier

1588747521

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Registry record

Entity type Individual (Type 1)
Name Dr. Alan Keith Tannenbaum
Credential M.D.
Sex Male
Practice address New Brunswick, NJ, 08901
Phone (732) 249-4410
Fax (732) 249-1208
Enumeration date Oct 23, 2006
Last updated in NPPES Apr 8, 2010

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

174400000X Specialist Other Service Providers · License MA048977 (NJ) Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 25MA04897700 (NJ) Secondary
207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 25MA04897700 (NJ) 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
060015491 Other NJ RR MEDICARE PTAN
1092802 Other NJ HORIZON NJ HEALTH
15634 Other NJ UNIVERSITY HEALTH PLANS
F04685 Other NJ HEALTHNET
060015491 Other NJ RR MCR PTAN
M10000542 01 Other NJ AMERICHOICE
29269 Other NJ BEECH STREET
0626708 Medicaid NJ -
18141 Other NJ AMERIGROUP

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

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.
What specialty is Alan Tannenbaum?
Alan Tannenbaum is registered in NPPES with the primary taxonomy of Cardiovascular Disease Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-04-08.