Physician Profile
Unclaimed ProfileAbout MARKWARDT
John Markwardt, MD practices critical care (intensivists) in Milwaukee, WI. John is a 2018 graduate of Medical College of Wisconsin. John is also listed as specializing in anesthesiology. Medicare claims data shows John provided 35 services to 26 patients.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (414) 805-8700
- Email not available
Practice Locations
9200 W WISCONSIN AVE
Milwaukee, WI 53226
Procedures Most Often Billed to Medicare
35 services · 26 patients · 2 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Anesthesia for x-ray or radiation therapy | Anaesthesia | 01922 |
11 |
| Critical care, first 30-74 minutes | Office visit | 99291 |
24 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other critical cares in Milwaukee 8
Same specialty, same city.
Trained at Medical College of Wisconsin 7
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 2018 at Medical College of Wisconsin 8
Providers who graduated from the same medical school in the same year.
Also performs Anesthesia for x-ray or radiation therapy 8
Providers in WI who bill this service to Medicare most often.
Common questions
What does Dr. Markwardt specialize in?
Dr. Markwardt is a critical care (intensivists) in Milwaukee, WI. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “CRITICAL CARE (INTENSIVISTS)”.
NPI registry
Where is Dr. Markwardt located?
Dr. Markwardt is listed at 9200 W WISCONSIN AVE, Milwaukee, WI 53226. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Markwardt's phone number?
The number on file is (414) 805-8700. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Markwardt?
Dr. Markwardt's National Provider Identifier is 1518451723. 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
Where did Dr. Markwardt go to medical school?
Dr. Markwardt attended Medical College of Wisconsin, graduating in 2018. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Markwardt have?
Dr. Markwardt has 8 years experience. Calculated from a graduation year of 2018, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Markwardt do most often?
According to Medicare billing data, Dr. Markwardt provides treatments such as anesthesia for x-ray or radiation therapy, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Markwardt's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Markwardt. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.