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Edit this profileAt a glance
- 601 W Nifong Blvd, Suite 2B, Columbia, MO 65203
About Dr. Vandewalker
Mark L. Vandewalker, M.D. practices allergy in Columbia, MO. Mark is a 1974 graduate of Washington University School of Medicine. According to Medicare claims data, Mark cared for 554 Medicare patients across 7,658 services. The services billed most often include professional service for preparation and provision of 1 or more antigens, test for allergy using allergenic extract, and professional service for single injection of allergen. The provider's National Provider Identifier (NPI) is 1386833358.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (573) 446-7000
- Email not available
Practice Locations
601 W NIFONG BLVD SUITE 2B
Columbia, MO 65203
Procedures Most Often Billed to Medicare
7,658 services · 554 patients · 9 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Professional service for preparation and provision of 1 or more antigens | Treatment | 95165 |
2,880 | More often than most peers in Allergy |
| Test for allergy using allergenic extract | Treatment | 95004 |
2,459 | More often than most peers in Allergy |
| Professional service for single injection of allergen | Treatment | 95115 |
1,846 | More than most peers in Allergy |
| Professional service for multiple injections of allergen | Treatment | 95117 |
250 | As often as other peers in Allergy |
| Test to measure rate of airflow | Treatment | 94375 |
47 | As often as other peers in Allergy |
| Administration and interpretation of patient-focused health risk assessment | Treatment | 96160 |
23 | Less often than most peers in Allergy |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
109 | More often than most peers in Allergy |
| Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional | Office visit | 99211 |
23 | Too few peers to compare |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
21 | Less often than most peers in Allergy |
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.
Other allergy specialists at this location 1
Same specialty, same street address — most likely the same department or group.
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.
Trained at Washington University School of Medicine 1
Other providers in the same specialty who trained at the same institution.
More connections — 14 related providers in 2 groups
Class of 1974 at Washington University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Professional service for preparation and provision of 1 or more antigens 6
Providers in MO who bill this service to Medicare most often.
Common questions
What is Mark L. Vandewalker's specialty?
Mark L. Vandewalker is an allergy in Columbia, MO. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find Mark L. Vandewalker?
Mark L. Vandewalker is listed at 601 W Nifong Blvd Suite 2B, Columbia, MO 65203. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Mark L. Vandewalker?
The number on file is (573) 446-7000. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Mark L. Vandewalker's NPI number?
Mark L. Vandewalker's National Provider Identifier is 1386833358. 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
What is Mark L. Vandewalker's education?
Mark L. Vandewalker attended Washington University School of Medicine, graduating in 1974. This comes from the CMS National Downloadable File.
CMS public data
How long has Mark L. Vandewalker been practicing?
Mark L. Vandewalker has 52 years experience. Calculated from a graduation year of 1974, reported in the CMS National Downloadable File.
CMS public data
What is Mark L. Vandewalker known for?
According to Medicare billing data, Mark L. Vandewalker provides treatments such as professional service for preparation and provision of 1 or more antigens and test for allergy using allergenic extract, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Mark L. Vandewalker confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Mark L. Vandewalker. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.