NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Marlen S Strefling, MD

Orthopaedic Surgery Physician in Brownwood, TX · enumerated 2006 · practices at Strefling Orthopaedic Surgery, PA.

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

National Provider Identifier

1316981020

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Marlen S Strefling
Credential MD
Sex Male
Practice address 125 South Park Drive, Suite B, Brownwood, TX, 76801
Fax (325) 643-5447
Enumeration date Jun 15, 2006
Last updated in NPPES Jun 4, 2010

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License J5491 (TX) 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
0013RC Other TX BCBS PROVIDER-GROUP
0346454-01 Medicaid TX -
0874390001 Other TX CIGNA -PALMETTO
8AW457 Other TX BCBS PROVIDER #

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

What specialty is Marlen Strefling?
Marlen Strefling is registered in NPPES with the primary taxonomy of Orthopaedic Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-06-04.