Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Internal Medicine

Nicholas W. Creasap, MD

Works at hospitals in Mount Vernon, OH · Marion, OH · Mansfield, OH … · Ohio

Summary

Dr. Nicholas W. Creasap, MD is an internal medicine doctor at 335 Glessner Ave, Mansfield, OH 44903. Phone: (419) 526-8581. Accepts Medicare assignment. In 2024, Nicholas W. Creasap had 282 Original Medicare patients and 302 services. NPI 1659670107. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Nicholas W. Creasap, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Nicholas W. Creasap accept Medicare assignment?
Yes. Medicare's clinician data says Nicholas W. Creasap accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Nicholas W. Creasap see?
In 2024, CMS data shows 282 Original Medicare patients and 302 services for Nicholas W. Creasap. This counts Original Medicare only and measures volume, not quality.
What is Nicholas W. Creasap's NPI number?
1659670107. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Nicholas W. Creasap, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients282
Services billed to Medicare302
Different services or procedures10
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)200 services
  2. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)61 services
  3. Critical care, first 30-74 minutes (99291)30 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Ischemic heart disease60%
  • Arthritis55%
  • Chronic kidney disease52%
  • Diabetes50%

Hospitals where Nicholas W. Creasap works

Medicare's Facility Affiliation Data lists Nicholas W. Creasap at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • Knox Community HospitalMount Vernon, OH · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 360040
  • Marion General HospitalMarion, OH · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 360011
  • OhioHealth Mansfield HospitalMansfield, OH · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 360118
  • OhioHealth Shelby HospitalShelby, OH · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 361324
  • Riverside Methodist HospitalColumbus, OH · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 360006

Practice locations

Addresses where Nicholas W. Creasap is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Nicholas W. Creasap as a member of this group (CMS data updated October 2, 2026).

  • OhioHealth Corporation2,314 clinicians in the group

Specialties

Find other Internal Medicine doctors in Ohio →

Other internal medicine doctors in Mansfield

Clinicians with the same Medicare primary specialty in Mansfield, OH — not a recommendation.

All internal medicine doctors in Mansfield →

Other clinicians in OhioHealth Corporation

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolWright State University Boonshoft School Of Medicine
Graduation year2011 (15 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1659670107
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians