Thomas Showalter, D.O.
NPI 1780853358 · Internal Medicine Physician · Oklahoma City, OK
Enrolled with Medicare as Practitioner - Medical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Showalter, D.O. is a Internal Medicine Physician provider in Oklahoma City, OK (NPI 1780853358).
Provider details
- NPI number
- 1780853358
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 4869 (OK)
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
18 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
1,741 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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 560 | $15 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 472 | $134 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 385 | $90 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 107 | $74 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 85 | $167 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 53 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Enzalutamidebrand: Xtandi | 204 | 25 |
| Levothyroxine Sodium | 127 | 31 |
| Ondansetronbrand: Ondansetron Odt | 107 | 55 |
| Potassium Chloride | 99 | 36 |
| Prednisone | 91 | 34 |
| Oxycodone Hcl | 74 | 24 |
| Apixabanbrand: Eliquis |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$108 across 2 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
- 2008-02-27
- Last updated
- 2017-06-27
Frequently asked questions
- What is Thomas Showalter's NPI number?
- Thomas Showalter's National Provider Identifier (NPI) is 1780853358, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Showalter's specialty?
- Thomas Showalter is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Showalter located?
- Thomas Showalter's practice location on file with NPPES is 5915 W Memorial Rd, Oklahoma City, OK 73142-2021.
- What is Thomas Showalter's phone number?
- The practice phone number listed in the NPPES registry for Thomas Showalter is (405) 773-6400.
- Does Thomas Showalter accept Medicare?
- Thomas Showalter is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Showalter's NPI active?
- Yes — Thomas Showalter's NPI (1780853358) is active in the NPPES registry as of the last update on 2017-06-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.