Michael Siedow, M.D.
NPI 1891227567 · Radiation Oncology Physician · Columbus, OH
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Siedow, M.D. is a Radiation Oncology Physician provider in Columbus, OH (NPI 1891227567).
Provider details
- NPI number
- 1891227567
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
9 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,679 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) |
|---|---|---|
| Ct Guidance for Insertion of Radiation Therapy Fields77014 | 557 | $44 |
| Calculation of Radiation Therapy Dose77300 | 276 | $32 |
| Design and Construction of Complex Radiation Treatment Device77334 | 191 | $59 |
| Radiation Treatment Management, 5 Treatment Sessions77427 | 174 | $188 |
| Complex Radiation Therapy Planning77263 | 72 | $166 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 66 | $64 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 34 | 16 |
| Tamsulosin Hcl | 26 | 11 |
| Silver Sulfadiazine | 25 | 14 |
| Sucralfate | 23 | 16 |
| Gabapentin | 22 | — |
| Oxycodone Hcl | 16 | — |
| Tramadol Hcl | 15 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$21 across 1 record (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
- 2017-03-31
- Last updated
- 2022-08-17
- Certified
- 2022-08-17
Frequently asked questions
- What is Michael Siedow's NPI number?
- Michael Siedow's National Provider Identifier (NPI) is 1891227567, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Siedow's specialty?
- Michael Siedow is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Siedow located?
- Michael Siedow's practice location on file with NPPES is 111 S Grant Ave, Columbus, OH 43215-4701.
- What is Michael Siedow's phone number?
- The practice phone number listed in the NPPES registry for Michael Siedow is (614) 566-9506.
- Does Michael Siedow accept Medicare?
- Michael Siedow is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Siedow's NPI active?
- Yes — Michael Siedow's NPI (1891227567) is active in the NPPES registry as of the last update on 2022-08-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.