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Internal Medicine

Steven M. Harsha, MD

Works at hospitals in Oklahoma City, OK · Oklahoma

Summary

Dr. Steven M. Harsha, MD is an internal medicine doctor at 1000 NE 13th St, Oklahoma City, OK 73104. Phone: (405) 271-3445. Accepts Medicare assignment. In 2024, Steven M. Harsha had 149 Original Medicare patients and 381 services. NPI 1689297244. 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.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 1000 NE 13th St, Oklahoma City, OK 73104 · Directions (1 more location)
  • Phone: (405) 271‑3445
  • Medicare: Accepts Medicare assignment
  • Hospital: O U Medical Center
  • Group practice: OU Health Partners Inc
  • Medical school: University Of Oklahoma College Of Medicine · graduated 2020 (6 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Steven M. Harsha, 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 Steven M. Harsha accept Medicare assignment?
Yes. Medicare's clinician data says Steven M. Harsha 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 Steven M. Harsha see?
In 2024, CMS data shows 149 Original Medicare patients and 381 services for Steven M. Harsha. This counts Original Medicare only and measures volume, not quality.
What is Steven M. Harsha's NPI number?
1689297244. 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 Steven M. Harsha, 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 patients149
Services billed to Medicare381
Different services or procedures16
Participating Medicare providerYes
Average age of these patients71

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)157 services
  2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)79 services
  3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)50 services
  4. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)19 services
  5. Hospital discharge day management, 30 minutes or less (99238)19 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%
  • Arthritis52%
  • Diabetes48%
  • Ischemic heart disease38%
  • Anxiety35%

Hospitals where Steven M. Harsha works

Medicare's Facility Affiliation Data lists Steven M. Harsha 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.

Practice locations

Addresses where Steven M. Harsha is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Steven M. Harsha as a member of this group (CMS data updated October 2, 2026).

  • OU Health Partners Inc1,184 clinicians in the group

Specialties

Find other Internal Medicine doctors in Oklahoma →

Other internal medicine doctors in Oklahoma City

Clinicians with the same Medicare primary specialty in Oklahoma City, OK — not a recommendation.

All internal medicine doctors in Oklahoma City →

Other clinicians in OU Health Partners Inc

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

Clinician information

CredentialMD
Medical schoolUniversity Of Oklahoma College Of Medicine
Graduation year2020 (6 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1689297244
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