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RONALD J OCONER D.O.
NPI 1649473729
Anesthesiology in Harvard, IL

Active since June 07, 2007PECOS EnrolledAccepts Medicare Assignment
901 GRANT ST, HARVARD, IL 60033(815) 943-8094(815) 943-8645 Get Directions Write a Review

NPPES record last updated: May 6, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: May 6, 2026, Sep 3, 2024 (2 updates tracked since 2024).

About Ronald J Oconer D.o. NPPES

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

RONALD J OCONER D.O. (NPI 1649473729) is an individual anesthesiology provider in Harvard, Illinois, licensed in Illinois (036.122284) and active in the NPI registry since June 2007. He is enrolled in Medicare PECOS, is affiliated with Northwestern Medicine Mchenry, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1649473729
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameRONALD J OCONERCredential: D.O.
Location Address901 GRANT STHarvard, IL 60033-1821
Mailing Address901 Grant StHarvard, IL 60033-1821 · (815) 943-8094 · Fax (815) 943-8645
Phone(815) 943-8094
Fax(815) 943-8645
Sole ProprietorNo
Medical School CMSMidwestern University, Chicago College Of Osteopathic MedGraduated 2003
Enumeration DateJune 7, 2007
Last NPPES UpdateMay 6, 20262 updates tracked since enumeration
NPPES CertifiedMay 6, 2026
✔ NPI 1649473729 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
Licenses✔ Licensed in IL · 036.122284✔ Licensed in WI · 53011-21✔ Licensed in PA · OS013538
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
901 GRANT ST, Harvard, IL 60033
Open in Google Maps ↗

Secondary Practice Locations 2

Location 15875 E Riverside BlvdRockford, IL 61114-4937 · Phone (815) 398-9491 · Fax (815) 381-7498
Location 210400 Haligus RdHuntley, IL 60142-9553 · Phone (224) 654-0000 · Fax (224) 654-0000

Other Identifiers 10

Other30042806PA · Keystone Mercy
Other30563PA · Health Partners - Ff
Other30042806PA · Keystone Ibc
Medicaid1019305800003PA
Other2855609000PA · Personal Choice
Medicaid1019305800001PA
Medicaid1019305800002PA
Other30567PA · Health Partners - Fb
Other01697PA · Health Partners Tc
Other1970005PA · Highmark Blue Shield

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

Ronald J Oconer 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 ID9739289158
PECOS Enrollment IDI20090618000529, I20110202000344
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.

Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 00731
This procedure involves the use of an endoscope, a flexible tube with a light and camera, to examine your esophagus, stomach, or upper small bowel. Anesthesia ensures you are comfortable and pain-free during the procedure.
19 services18 patients
Anesthesia for other procedure on large bowel using an endoscope 00811
Anesthesia for an endoscopic procedure on the large bowel ensures comfort and relaxation during the procedure. You'll be given medication to make you drowsy or asleep, eliminating any discomfort. The medication can be administered through a vein or inhaled.
13 services13 patients
Anesthesia for lens surgery 00142
Anesthesia for lens surgery involves administering medication to numb the eye area, ensuring you feel no pain during the procedure. This can be a local anesthetic (numbing only the eye area) or general (where you're asleep). It helps make the surgery comfortable and stress-free.
11 services11 patients

Hospital Affiliations CMS Care Compare 3

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

Northwestern Medicine Mchenry

Acute Care Hospitals · Mchenry, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number140116
Location4201 Medical Center DriveMchenry, IL 60050 · Mc Henry County
Emergency services Birthing friendly

Rochelle Community Hospital

Critical Access Hospitals · Rochelle, IL
OwnershipVoluntary non-profit - Private
CMS Certification Number141312
Location900 N 2nd StRochelle, IL 61068 · Ogle County
Emergency services

The Monroe Clinic

Acute Care Hospitals · Monroe, WI
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520028
Location515 22nd AveMonroe, WI 53566 · Green 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.

JOSEPH H LEVENSTEIN MD
Emergency Medicine
901 GRANT ST
HARVARD, IL 60033
McHenry County (815) 943-5431
DR. HRISTO D HRISTOV MD
Internal Medicine
901 GRANT ST
HARVARD, IL 60033
McHenry County (815) 943-5431
AAPTI SHARAD PATEL PT
Physical Therapist
901 GRANT ST
HARVARD, IL 60033
McHenry County (815) 943-5431
MERCY HARVARD HOSPITAL INC
Skilled Nursing Facility
901 GRANT ST
HARVARD, IL 60033
McHenry County (815) 943-2967
JENNIFER DIANE PAUL RD
Dietitian, Registered
901 GRANT ST
HARVARD, IL 60033
McHenry County (815) 943-5431
MICHELLE ACEVES-OCHOA
Dietitian, Registered
901 GRANT ST
HARVARD, IL 60033
McHenry County (815) 943-2877
KRISTEN L REZAC
Dietitian, Registered
901 GRANT ST
HARVARD, IL 60033
McHenry County (815) 943-5431
NANCY THERESE BARNES OT
Occupational Therapist
901 GRANT ST
HARVARD, IL 60033
McHenry County (815) 943-5431

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 Ronald Oconer's NPI number?

The NPI number for Ronald Oconer is 1649473729. It was assigned to this individual provider in the NPPES registry on June 7, 2007.

Where is Ronald Oconer located?

Ronald Oconer practices at 901 Grant St, Harvard, IL 60033. The listed phone number is (815) 943-8094.

What is Ronald Oconer's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Ronald Oconer enrolled in Medicare?

Yes. Ronald Oconer 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.

Is Ronald Oconer affiliated with any hospitals?

According to CMS data, Ronald Oconer is affiliated with Northwestern Medicine Mchenry, Rochelle Community Hospital and The Monroe Clinic.

When was this NPI record last updated?

The NPPES record for Ronald Oconer was last updated on May 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.