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

Emergency Medicine

Diane M. Reynolds, MD

Sees patients in Nichols Hills, OK · Oklahoma

Summary

Dr. Diane M. Reynolds, MD is an emergency medicine doctor at 1121 NW 63rd St, Suite 5001, Nichols Hills, OK 73116. Phone: (405) 652-0632. Accepts Medicare assignment. In 2024, Diane M. Reynolds had 344 Original Medicare patients and 839 services. NPI 1932197183. Source: CMS National Downloadable File, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Emergency medicine doctor (Medicare lists Emergency Medicine)
  • Address: 1121 NW 63rd St, Suite 5001, Nichols Hills, OK 73116 · Directions
  • Phone: (405) 652‑0632
  • Medicare: Accepts Medicare assignment
  • Group practice: Mercy Oklahoma Ambulatory Services LLC
  • Medical school: University Of Oklahoma College Of Medicine · graduated 1998 (28 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Diane M. Reynolds, 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 Diane M. Reynolds accept Medicare assignment?
Yes. Medicare's clinician data says Diane M. Reynolds 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 Diane M. Reynolds see?
In 2024, CMS data shows 344 Original Medicare patients and 839 services for Diane M. Reynolds. This counts Original Medicare only and measures volume, not quality.
What is Diane M. Reynolds's NPI number?
1932197183. 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 Diane M. Reynolds, 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 patients344
Services billed to Medicare839
Different services or procedures36
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)234 services
  2. Detection test by immunoassay with direct visual observation for severe acute respiratory syndrome coronavirus 2 (covid-19) (87811)122 services
  3. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)90 services
  4. Detection test by immunoassay with direct visual observation for influenza virus (87804)80 services
  5. Automated urinalysis test (81003)59 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 cholesterol73%
  • High blood pressure68%
  • Arthritis50%
  • Ischemic heart disease29%
  • Depression24%
  • Anxiety24%

Practice locations

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

Group practices

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

  • Mercy Oklahoma Ambulatory Services LLC48 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Oklahoma →

Other emergency medicine doctors in Oklahoma

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

All emergency medicine doctors in Oklahoma →

Other clinicians in Mercy Oklahoma Ambulatory Services LLC

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

Clinician information

CredentialMD
Medical schoolUniversity Of Oklahoma College Of Medicine
Graduation year1998 (28 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1932197183
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. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  2. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians