Physician Profile
Unclaimed ProfileAbout KNAPP
Based in Florissant, MO, William Stephen Knapp, D.O. is listed in the NPI registry under internal medicine. William graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 1978. William is also listed as specialising in family medicine — geriatric medicine.
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
Common questions
What kind of doctor is Dr. Knapp?
Dr. Knapp is an internal medicine in Florissant, MO. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
What is Dr. Knapp's address?
Dr. Knapp is listed at 2137 CHARBONIER RD STE B, Florissant, MO 63031. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Knapp?
The number on file is (314) 831-0181. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Knapp's NPI number?
Dr. Knapp's National Provider Identifier is 1023099140. 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. Knapp train?
Dr. Knapp attended At Still University of Health Sciences, College of Osteo Med, Kirksville, graduating in 1978. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Knapp been practising?
Dr. Knapp has 48 years experience. Calculated from a graduation year of 1978, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Knapp perform?
According to Medicare billing data, Dr. Knapp performs procedures including insertion of needle into vein for collection of blood sample; provides treatments such as influenza vaccine split virus, preservative free and routine electrocardiogram using at least 12 leads with interpretation and report, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Knapp confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Knapp. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (314) 831-0181
- Email not available
Practice Locations
2137 CHARBONIER RD STE B
Florissant, MO 63031
Procedures Most Often Billed to Medicare
1,482 services · 950 patients · 18 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
225 |
| Influenza vaccine split virus, preservative free | Treatment | 90662 |
35 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
29 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
248 |
| Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | Lab test | 85025 |
175 |
| Blood test, comprehensive group of blood chemicals | Lab test | 80053 |
168 |
| Blood test, thyroid stimulating hormone (tsh) | Lab test | 84443 |
126 |
| Blood test, lipids (cholesterol and triglycerides) | Lab test | 80061 |
105 |
| Hemoglobin a1c level | Lab test | 83036 |
60 |
| Vitamin d-3 level | Lab test | 82306 |
55 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Claim this profileRelated providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 2
Clinically related specialties at the same address — the people this provider most likely works alongside.
Other internal medicines in Florissant 8
Same specialty, same city.
Trained at At Still University of Health Sciences, College of Osteo Med, Kirksville 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1978 at At Still University of Health Sciences, College of Osteo Med, Kirksville 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of needle into vein for collection of blood sample 8
Providers in MO 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.