Thomas Niesen, M.D.
NPI 1700870250 · Surgery Physician · Chesterfield, MO
Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Niesen, M.D. is a Surgery Physician provider in Chesterfield, MO (NPI 1700870250).
Provider details
- NPI number
- 1700870250
- Entity type
- Individual
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 36096 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,684 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Ultrasound Study of Arm and Leg Arteries93922 | 326 | $65 |
| Ultrasound of Both Sides of Head and Neck Blood Flow93880 | 303 | $37 |
| Ultrasound Study of Arm Or Leg Veins With Compression and Maneuvers93970 | 273 | $32 |
| Ultrasound of One Leg Arteries Or Artery Grafts93926 | 240 | $124 |
| Ultrasound Study of One Arm Or Leg Veins With Compression and Maneuvers93971 | 226 | $21 |
| Ultrasound of Both Sides of Head and Neck Blood Flow93880 | 172 | $184 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clopidogrel Bisulfatebrand: Clopidogrel | 241 | 85 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 63 | 55 |
| Tramadol Hcl | 55 | 50 |
| Cephalexin | 33 | 29 |
| Warfarin Sodium | 29 | — |
| Apixabanbrand: Eliquis | 24 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$304 across 10 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-09-09
- Last updated
- 2015-02-12
Frequently asked questions
- What is Thomas Niesen's NPI number?
- Thomas Niesen's National Provider Identifier (NPI) is 1700870250, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Niesen's specialty?
- Thomas Niesen is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Niesen located?
- Thomas Niesen's practice location on file with NPPES is 226 S Woods Mill Rd, Chesterfield, MO 63017-3662.
- What is Thomas Niesen's phone number?
- The practice phone number listed in the NPPES registry for Thomas Niesen is (314) 434-1211.
- Does Thomas Niesen accept Medicare?
- Thomas Niesen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Niesen's NPI active?
- Yes — Thomas Niesen's NPI (1700870250) is active in the NPPES registry as of the last update on 2015-02-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.