Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

BENJAMIN R REZNY D.O.
NPI 1457715047
Anesthesiology - Critical Care Medicine in Iowa City, IA

Q: What is Benjamin Rezny's NPI number?

The NPI number for Benjamin Rezny is 1457715047. It was assigned to this individual provider in the NPPES registry on April 8, 2016.

Q: What is Benjamin Rezny's specialty?

The primary specialty registered for this NPI is Anesthesiology, specializing in Critical Care Medicine, with taxonomy code 207LC0200X.

Q: When was this NPI record last updated?

The NPPES record for Benjamin Rezny was last updated on June 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 41 days 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.

Active since April 08, 2016PECOS EnrolledAccepts Medicare Assignment

200 HAWKINS DR, IOWA CITY, IA 52242(319) 356-2633(319) 356-2940 Get Directions Write a Review

NPPES record last updated: June 30, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Mar 21, 2023, Jul 8, 2021, Jun 12, 2019 (3 updates tracked since 2019).

On this page

About Benjamin R Rezny D.o. NPPES

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

BENJAMIN R REZNY D.O. (NPI 1457715047) is an individual critical care medicine provider in Iowa City, Iowa, licensed in Iowa (DO-05342) and active in the NPI registry since April 2016. He is enrolled in Medicare PECOS, is affiliated with Vanderbilt University Medical Center, and maintains a secondary practice location in North Liberty.

NPPES Registry Identity

NPI1457715047

Entity TypeIndividualMale

Primary Taxonomy207LC0200X

Provider Legal NameBENJAMIN R REZNYCredential: D.O.

Location Address200 HAWKINS DRIowa City, IA 52242-1009

Mailing Address200 Hawkins DrIowa City, IA 52242-1009 · (319) 356-2633 · Fax (319) 356-2940

Phone(319) 356-2633

Fax(319) 356-2940

Sole ProprietorNo

Medical School CMSDes Moines University Of Osteopathic Medicine And Health SciencesGraduated 2016

Enumeration DateApril 8, 2016

Last NPPES UpdateJune 30, 20263 updates tracked since enumeration

NPPES CertifiedJune 30, 2026

✔ NPI 1457715047 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyAnesthesiology · Critical Care MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207LC0200X

Licenses✔ Licensed in IA · DO-05342✔ Licensed in TN · 5305

Definition

An anesthesiologist, who specializes in critical care medicine diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.

Also ListedEmergency MedicineTaxonomy 207P00000X · License DO-05342 (IA)

Also ListedPsychiatry & Neurology · NeurologyTaxonomy 2084N0400X · License DO-05342 (IA)

200 HAWKINS DR, Iowa City, IA 52242

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Secondary Practice Location 1

Location 1701 W Forevergreen RdNorth Liberty, IA 52317-9848 · Phone (319) 356-2633 · Fax (319) 356-2940

Other Identifiers 1

MedicaidQ042836TN

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Insurance Company.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

Benjamin R Rezny D.o. 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 ID7810287539

PECOS Enrollment IDI20230123002150

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.

Areas of Expertise CMS Part B claims 3

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.

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.

71 services67 patients

Insertion of artery tube for blood sampling or infusion through skin 36620

This procedure involves placing a small tube into an artery, usually in the wrist or elbow, to collect blood samples or administer medication. It's done under local anesthesia and is a common, safe practice.

14 services13 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.

13 services13 patients

Hospital Affiliations CMS Care Compare 5

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

Vanderbilt University Medical Center

Acute Care Hospitals · Nashville, TN

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number440039

Location1211 Medical Center DriveNashville, TN 37232 · Davidson County

Emergency services Birthing friendly

Saint Thomas Rutherford Hospital

Acute Care Hospitals · Murfreesboro, TN

2/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number440053

Location1700 Medical Center ParkwayMurfreesboro, TN 37129 · Rutherford County

Emergency services Birthing friendly

Southern Tennessee Regional Hlth System Winchester

Acute Care Hospitals · Winchester, TN

2/5 CMS rating

OwnershipProprietary

CMS Certification Number440058

Location185 Hospital RoadWinchester, TN 37398 · Franklin County

Emergency services Birthing friendly

Dekalb Community Hospital

Acute Care Hospitals · Smithville, TN

OwnershipVoluntary non-profit - Church

CMS Certification Number440148

Location520 W Main StSmithville, TN 37166 · De Kalb County

Emergency services

Saint Thomas River Park Hospital

Acute Care Hospitals · Mcminnville, TN

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number440151

Location1559 Sparta StreetMcminnville, TN 37110 · Warren County

Emergency services Birthing friendly

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.

SANGIL LEE M.D.

Emergency Medicine

200 HAWKINS DR
IOWA CITY, IA 52242

Johnson County (319) 356-2233

RAMI G. EL ABIAD M.D.

Internal Medicine (Gastroenterology)

200 HAWKINS DR
IOWA CITY, IA 52242

Johnson County (319) 356-4901

GRERK SUTAMTEWAGUL MD

Internal Medicine (Hematology & Oncology)

200 HAWKINS DR, DEPT OF INTERNAL MEDICINE
IOWA CITY, IA 52242

Johnson County (319) 356-1616

DR. KALEB TANNER VEIT D.O.

Internal Medicine (Critical Care Medicine)

200 HAWKINS DR
IOWA CITY, IA 52242

Johnson County (319) 356-2320

OMAR JABER M.D

Chronic Disease Hospital

200 HAWKINS DR
IOWA CITY, IA 52242

Johnson County (319) 471-8958

JENNIFER MANCUSO MS, CGC

Genetic Counselor, MS

200 HAWKINS DR, 31663 PFP
IOWA CITY, IA 52242

Johnson County (319) 384-7983

ASHLEY KAISER M.D.

Obstetrics & Gynecology

200 HAWKINS DR, DEPT OF OBGYN
IOWA CITY, IA 52242

Johnson County (319) 356-2294

MRS. NANCY JANE MILLICE

Health Educator

200 HAWKINS DR, 0733 JPP
IOWA CITY, IA 52242

Johnson County (319) 356-3825

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 Benjamin Rezny's NPI number?

The NPI number for Benjamin Rezny is 1457715047. It was assigned to this individual provider in the NPPES registry on April 8, 2016.

Where is Benjamin Rezny located?

Benjamin Rezny practices at 200 Hawkins Dr, Iowa City, IA 52242. The listed phone number is (319) 356-2633.

What is Benjamin Rezny's specialty?

The primary specialty registered for this NPI is Anesthesiology, specializing in Critical Care Medicine, with taxonomy code 207LC0200X.

Is Benjamin Rezny enrolled in Medicare?

Yes. Benjamin Rezny 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 Benjamin Rezny accept?

Health plans from Oscar Insurance Company list Benjamin Rezny 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 Benjamin Rezny affiliated with any hospitals?

According to CMS data, Benjamin Rezny is affiliated with Vanderbilt University Medical Center, Saint Thomas Rutherford Hospital, Southern Tennessee Regional Hlth System Winchester, Dekalb Community Hospital and Saint Thomas River Park Hospital.

When was this NPI record last updated?

The NPPES record for Benjamin Rezny was last updated on June 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 41 days 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.