Mark J. Schaefer, M.D. practises anesthesiology in West Allis, WI. Mark is a 1989 graduate of Medical College of Wisconsin.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Dr. Schaefer is an anesthesiology in West Allis, WI. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “ANESTHESIOLOGY”.
NPI registry
Dr. Schaefer is listed at 8901 W LINCOLN AVE 2ND FL, West Allis, WI 53227. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (414) 329-4300. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Dr. Schaefer's National Provider Identifier is 1629052428. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Dr. Schaefer attended Medical College of Wisconsin, graduating in 1989. This comes from the CMS National Downloadable File.
CMS public data
Dr. Schaefer has 37 years experience. Calculated from a graduation year of 1989, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Dr. Schaefer provides treatments such as anesthesia for other procedure on large bowel using an endoscope. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Schaefer. If this is you, claiming it is free.
Guide.md
Source: NPPES NPI Registry
8901 W LINCOLN AVE 2ND FL
West Allis, WI 53227
12 services · 12 patients · 1 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Anesthesia for other procedure on large bowel using an endoscope | Anaesthesia | 00811 |
12 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Same specialty, same street address — most likely the same department or group.
Clinically related specialties at the same address — the people this provider most likely works alongside.
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Same specialty, same city.
Other providers in the same specialty who trained at the same institution.
Providers who graduated from the same medical school in the same year.
Providers in WI who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.