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

Ms. Nancy M. Ortenberg, M,A., LMFT

Counselor in Boulder, CO · enumerated 2007 · practices at Anam Chara.

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

National Provider Identifier

1053590885

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Registry record

Entity type Individual (Type 1)

Name Ms. Nancy M. Ortenberg

Credential M,A., LMFT

Sex Female

Practice address Boulder, CO, 80302

Phone (303) 449-2011

Fax (303) 449-8525

Enumeration date Oct 29, 2007

Last updated in NPPES May 8, 2009

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

Taxonomy & licenses

101Y00000X Counselor Behavioral Health & Social Service Providers · License MFT 287 (CO) Primary

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License MFT 287 (CO) Secondary

LMFT · Licensed Marriage and Family Therapist: A licensed therapist specializing in relational and family psychotherapy. About the LMFT credential

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 Nancy Ortenberg practice?

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

What is the NPI number for Nancy Ortenberg?

The National Provider Identifier (NPI) for Nancy Ortenberg is 1053590885, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Anam Chara Community Based Hospice Care Agency · Boulder, CO NPI 1306872908 Jennifer Epstein Mental Health Counselor · Boulder, CO NPI 1801948971 Jennie Gershater Mental Health Counselor · Boulder, CO NPI 1811268758 Tobin Haas Psychologist · Boulder, CO NPI 1629473186 Sue Jordan Kertzner Professional Counselor · Boulder, CO NPI 1255005948

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-05-08.