Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Elizabeth M Tapen, MD

Radiation Oncology Physician in Big Sky, MT · enumerated 2006.

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

National Provider Identifier

1134108525

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Registry record

Entity type Individual (Type 1)

Name Dr. Elizabeth M Tapen

Credential MD

Sex Female

Practice address 2091 Little Coyote Rd Ste 161029, Big Sky, MT, 59716

Phone (845) 797-8700

Enumeration date Jan 13, 2006

Last updated in NPPES Dec 17, 2021

Taxonomy & licenses

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 2323381 (NY) 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
2374E2	Other	NY	EMPIRE BCBS
2622228	Medicaid	NY	-
376669	Other	NY	MVP
82318	Other	NY	GHI HMO
2390E1	Other	NY	EMPIRE BCBS
376670	Other	NY	MVP
82317	Other	NY	GHI HMO
2374E1	Other	NY	EMPIRE BCBS
4099497	Other	NY	GHI PPO
02622228	Medicaid	NY	-
3792539	Other	NY	AETNA USHC HMO
4099496	Other	NY	GHI PPO
2390E2	Other	NY	EMPIRE BCBS
5567616	Other	NY	AETNA USHC PPO

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

Where does Elizabeth Tapen practice?

The practice location on file with NPPES is in Big Sky, MT. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Elizabeth Tapen?

The National Provider Identifier (NPI) for Elizabeth Tapen is 1134108525, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-17.