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MIKAELA ROSE KOIVISTO
NPI 1336991538
Emergency Medicine in Oklahoma City, OK

Active since April 02, 2024PECOS EnrolledAccepts Medicare Assignment
4401 S WESTERN AVE, OKLAHOMA CITY, OK 73109(405) 834-4573 Get Directions Write a Review

NPPES record last updated: March 29, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Mar 29, 2026, Apr 2, 2024 (2 updates tracked since 2024).

About Mikaela Rose Koivisto NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MIKAELA ROSE KOIVISTO (NPI 1336991538) is an individual emergency medicine provider in Oklahoma City, Oklahoma, licensed in Oklahoma (9185) and active in the NPI registry since April 2024. She is enrolled in Medicare PECOS, is affiliated with Great Plains Regional Medical Center, and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1336991538
Entity TypeIndividualFemale
Primary Taxonomy207P00000X
Provider Legal NameMIKAELA ROSE KOIVISTO
Location Address4401 S WESTERN AVEOklahoma City, OK 73109-3413
Mailing Address4401 S Western AveOklahoma City, OK 73109-3413 · (855) 696-2666
Phone(405) 834-4573
Sole ProprietorYes
Medical School CMSUniversity Of Arkansas College Of MedicineGraduated 2024
Enumeration DateApril 2, 2024
Last NPPES UpdateMarch 29, 20262 updates tracked since enumeration
NPPES CertifiedMarch 29, 2026
✔ NPI 1336991538 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in OK · 9185
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
4401 S WESTERN AVE, Oklahoma City, OK 73109
Open in Google Maps ↗

Secondary Practice Locations 3

Location 11500 N Green AvePurcell, OK 73080-1642 · Phone (405) 527-6524
Location 22401 W Wrangler BlvdSeminole, OK 74868-1917 · Phone (432) 758-5811
Location 33701 E Main StWeatherford, OK 73096-3309 · Phone (580) 772-5551

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Mending Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mikaela Rose Koivisto is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5698282507
PECOS Enrollment IDI20250725003932
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Hospital Affiliations CMS Care Compare 4

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Great Plains Regional Medical Center

Acute Care Hospitals · Elk City, OK
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number370019
Location1801 West 3rd StreetElk City, OK 73644 · Beckham County
Emergency services Birthing friendly

Grady Memorial Hospital

Acute Care Hospitals · Chickasha, OK
3/5 CMS rating
OwnershipGovernment - Local
CMS Certification Number370054
Location2220 Iowa StreetChickasha, OK 73018 · Grady County
Emergency services

Purcell Municipal Hospital

Acute Care Hospitals · Purcell, OK
OwnershipGovernment - Local
CMS Certification Number370158
Location2301 N 9th AvePurcell, OK 73080 · Mcclain County
Emergency services

Weatherford Regional Hospital, Inc Of Weatherford

Critical Access Hospitals · Weatherford, OK
OwnershipGovernment - Hospital District or Authority
CMS Certification Number371323
Location3701 E MainWeatherford, OK 73096 · Custer County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 73109 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$82.46 typical visit price
range $53.00 – $162.61
Typical copayment $20.61 (range $13.25 – $40.65)
Most-billed visit code 99203
Established Patient
$94.27 typical visit price
range $16.68 – $132.40
Typical copayment $23.56 (range $4.17 – $33.10)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. HUNTER DALE COOK D.O
Emergency Medicine
4401 S WESTERN AVE
OKLAHOMA CITY, OK 73109
Oklahoma County (405) 636-7709
MARCIA R PALMER PA
Physician Assistant
4401 S WESTERN AVE
OKLAHOMA CITY, OK 73109
Oklahoma County (405) 713-4740
DR. DAVID BRENNAN DO
Emergency Medicine
4401 S WESTERN AVE
OKLAHOMA CITY, OK 73109
Oklahoma County (405) 636-7000
DR. LAUREN L. FITZGERALD MD
Anesthesiology
4401 S WESTERN AVE
OKLAHOMA CITY, OK 73109
Oklahoma County (918) 392-2944
MS. JILL DIMOND MOORE MS, C.C.C.
Speech-Language Pathologist
4401 S WESTERN AVE, DEPT. 2004215
OKLAHOMA CITY, OK 73109
Oklahoma County (405) 636-7131
DR. JUSTIN ANDRE NALAGAN M.D.
Hospitalist
4401 S WESTERN AVE
OKLAHOMA CITY, OK 73109
Oklahoma County (405) 713-7403
DAVID ALEXANDER ORBAN DO
Emergency Medicine
4401 S WESTERN AVE
OKLAHOMA CITY, OK 73109
Oklahoma County (405) 636-7000
MATTHEW RAY WHITTAKER DO
Emergency Medicine
4401 S WESTERN AVE
OKLAHOMA CITY, OK 73109
Oklahoma County (405) 636-7195

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mikaela Koivisto's NPI number?

The NPI number for Mikaela Koivisto is 1336991538. It was assigned to this individual provider in the NPPES registry on April 2, 2024.

Where is Mikaela Koivisto located?

Mikaela Koivisto practices at 4401 S Western Ave, Oklahoma City, OK 73109. The listed phone number is (405) 834-4573.

What is Mikaela Koivisto's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Mikaela Koivisto enrolled in Medicare?

Yes. Mikaela Koivisto is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Mikaela Koivisto accept?

Health plans from Mending Health list Mikaela Koivisto as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Mikaela Koivisto affiliated with any hospitals?

According to CMS data, Mikaela Koivisto is affiliated with Great Plains Regional Medical Center, Grady Memorial Hospital, Purcell Municipal Hospital and Weatherford Regional Hospital, Inc Of Weatherford.

When was this NPI record last updated?

The NPPES record for Mikaela Koivisto was last updated on March 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.