Dr. Stan L Markus, MD
Dr. Stan L Markus is a Surgery Physician provider (Surgery) practicing in Oconomowoc, WI, registered in the NPPES registry with NPI 1134103641 since 2005. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1134103641 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Stan L Markus |
| Credential | MD |
| Sex | Male |
| Practice address | 888 THACKERAY TRL STE 103, Oconomowoc, WI, 53066 |
| Phone | 2625671499 |
| Fax | 2625674502 |
| Enumeration date | 2005-11-30 |
| Last updated in NPPES | 2017-11-29 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 208C00000X | Colon & Rectal Surgery Physician | Secondary | 28258 | WI |
| 208600000X | Surgery Physician | Primary | 28258 | WI |
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 |
|---|---|---|---|
| 30821400 | Medicaid | WI | — |
Copy-ready billing details
Provider: Stan Markus, MD NPI: 1134103641 Taxonomy: 208600000X (Surgery Physician) Address: 888 THACKERAY TRL STE 103, Oconomowoc, WI, 53066
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1508825605 | Eric Elliot | Individual | Physician Assistant | Oconomowoc, WI |
| 1710946132 | Cynthia Pangallo | Individual | Surgery Physician | Oconomowoc, WI |
| 1457311441 | Emily Stoddard | Individual | Surgery Physician | Oconomowoc, WI |
| 1831862895 | Allegiance Medical, Inc. | Organization | Internal Medicine Physician | Oconomowoc, WI |
| 1265230601 | Primelife Health and Wellness | Organization | Integrative Medicine Physician | Oconomowoc, WI |
Verify this record
Cross-check NPI 1134103641 against the authoritative CMS record: view Dr. Stan L Markus 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 2017-11-29.