Robert Michael Stack, MD
Robert Michael Stack is a Orthopaedic Surgery Physician provider (Orthopaedic Surgery) practicing in Las Cruces, NM, registered in the NPPES registry with NPI 1134111461 since 2005. The credential MD stands for Doctor of Medicine. Practices at Las Cruces Orthopaedic Associates, PC (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1134111461 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Robert Michael Stack |
| Credential | MD |
| Sex | Male |
| Practice address | 675 AVENIDA DE MESILLA, Las Cruces, NM, 88005 |
| Phone | 5055253535 |
| Fax | 5055270217 |
| Enumeration date | 2005-08-23 |
| Last updated in NPPES | 2007-10-29 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 207X00000X | Orthopaedic Surgery Physician | Primary | 78268 | NM |
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 |
|---|---|---|---|
| 26210 | Other | NM | PRESBYTERIAN |
| 16010 | Other | NM | HMO |
| 2666 | Other | NM | BC BS |
| 0761430001 | Other | NM | DMERC |
| 39445593 | Other | NM | CHAMPUS |
| 88005C005 | Other | NM | TRICARE |
Copy-ready billing details
Provider: Robert Stack, MD NPI: 1134111461 Taxonomy: 207X00000X (Orthopaedic Surgery Physician) Address: 675 AVENIDA DE MESILLA, Las Cruces, NM, 88005
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1144212473 | Las Cruces Orthopaedic Associates, PC | Organization | Orthopaedic Surgery Physician | Las Cruces, NM |
| 1811978919 | Wayne Lindsey | Individual | Orthopaedic Surgery Physician | Las Cruces, NM |
| 1124076948 | Paul Saiz | Individual | Orthopaedic Surgery Physician | Las Cruces, NM |
| 1104126481 | Michael Hamrick | Individual | Nurse Practitioner | Las Cruces, NM |
Verify this record
Cross-check NPI 1134111461 against the authoritative CMS record: view Robert Michael Stack on the official NPPES registry .
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 or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-10-29.