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SPENSER JAMES RENTZ
NPI 1548767098
Emergency Medicine in Oklahoma City, OK

Active since April 11, 2018PECOS Enrolled
4401 S WESTERN AVE, OKLAHOMA CITY, OK 73109(405) 636-7000 Get Directions Write a Review

NPPES record last updated: October 5, 2019. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Oct 5, 2019, Apr 11, 2018 (2 updates tracked since 2018).

About Spenser James Rentz NPPES

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

SPENSER JAMES RENTZ (NPI 1548767098) is an individual emergency medicine provider in Oklahoma City, Oklahoma, licensed in Oklahoma (6734) and active in the NPI registry since April 2018. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1548767098
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameSPENSER JAMES RENTZ
Location Address4401 S WESTERN AVEOklahoma City, OK 73109-3413
Mailing Address1705 Summitview Ave Apt CYakima, WA 98902-2986 · (801) 420-8991
Phone(405) 636-7000
Sole ProprietorNo
Enumeration DateApril 11, 2018
Last NPPES UpdateOctober 5, 20192 updates tracked since enumeration
✔ NPI 1548767098 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in OK · 6734
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.
4401 S WESTERN AVE, Oklahoma City, OK 73109
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Spenser James Rentz is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Medicare Billing Reassignments

4

Medicare enrollment records show Spenser Rentz reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mercy Clinic Oklahoma Communities
13 mi
Family Medicine
4300 W MEMORIAL RD
Oklahoma City, OK 73120
  • Reassigned Medicare billing, Oklahoma enrollment
  • 975 clinicians in this Medicare group
NPI 1386874550 (405) 752-3333
Emergency Services Of Oklahoma PC
14 mi
Emergency Medicine
901 N PORTER AVE
Norman, OK 73071
  • Reassigned Medicare billing, Oklahoma enrollment
  • 418 clinicians in this Medicare group
NPI 1215249891 (925) 924-1600
Grady Memorial Hospital
14 mi
Rural Health
4805 E HIGHWAY 37
Tuttle, OK 73089
  • Reassigned Medicare billing, Oklahoma enrollment
  • 97 clinicians in this Medicare group
NPI 1750715439 (405) 381-2301
South Central Emergency Services PC
54 mi
Emergency Medicine
1323 W 6TH AVE
Stillwater, OK 74074
  • Reassigned Medicare billing, Oklahoma enrollment
  • 298 clinicians in this Medicare group
NPI 1558663724 (925) 924-1600

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 6

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
307 services268 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
149 services144 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
103 services94 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
48 services47 patients
Emergency department visit with low level of medical decision making 99283
An emergency department visit for a problem of moderate severity involves immediate medical attention for issues like minor fractures, burns, or high fever. The healthcare team will assess your condition, provide necessary treatment, and may suggest further tests or admission if required.
23 services23 patients
Insertion of non-tunneled central venous tube for infusion (5 years or older) 36556
This procedure involves placing a thin tube into a large vein, usually in the neck or chest, to administer medication or fluids. It's done under local anesthesia to minimize discomfort. It's a standard, safe procedure for individuals aged 5 and above.
16 services16 patients

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
JENNIFER A LLEWELYN APRN - CRNA
Nurse Anesthetist, Certified Registered
4401 S WESTERN AVE
OKLAHOMA CITY, OK 73109
Oklahoma County (405) 636-7000

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 Spenser Rentz's NPI number?

The NPI number for Spenser Rentz is 1548767098. It was assigned to this individual provider in the NPPES registry on April 11, 2018.

Where is Spenser Rentz located?

Spenser Rentz practices at 4401 S Western Ave, Oklahoma City, OK 73109. The listed phone number is (405) 636-7000.

What is Spenser Rentz's specialty?

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

Is Spenser Rentz enrolled in Medicare?

Yes. Spenser Rentz is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Spenser Rentz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Spenser Rentz reassigns Medicare benefits to 4 organizations: Mercy Clinic Oklahoma Communities (Oklahoma City, OK), Emergency Services Of Oklahoma PC (Norman, OK), Grady Memorial Hospital (Tuttle, OK) and South Central Emergency Services PC (Stillwater, OK). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Spenser Rentz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Spenser Rentz was last updated on October 5, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 years 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.