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DR. JAMES V. O'CONNOR M.D.
NPI 1619904455
Surgery - Surgical Critical Care in Baltimore, MD

Active since June 27, 2006PECOS Enrolled
22 S GREENE ST, BALTIMORE, MD 21201(410) 328-6704(410) 328-4124 Get Directions Write a Review

NPPES record last updated: August 30, 2012. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. James V. O'connor M.d. NPPES

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

DR. JAMES V. O'CONNOR M.D. (NPI 1619904455) is an individual surgical critical care provider in Baltimore, Maryland, licensed in Maryland (D57930) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1619904455
Entity TypeIndividualMale
Primary Taxonomy2086S0102X
Provider Legal NameDR. JAMES V. O'CONNORCredential: M.D.
Location Address22 S GREENE STBaltimore, MD 21201-1544
Mailing AddressPo Box 64793Baltimore, MD 21264-4793 · (410) 328-6704 · Fax (410) 328-4124
Phone(410) 328-6704
Fax(410) 328-4124
Sole ProprietorNo
Enumeration DateJune 27, 2006
Last NPPES UpdateAugust 30, 2012
✔ NPI 1619904455 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgery · Surgical Critical CareAllopathic & Osteopathic Physicians
Taxonomy Code2086S0102X
License✔ Licensed in MD · D57930
Definition
A surgeon with expertise in the management of the critically ill and postoperative patient, particularly the trauma victim, 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.
22 S GREENE ST, Baltimore, MD 21201
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Other Identifiers 4

Medicaid684303400MD
Medicare PINB455MD
Medicare PIN050081703MD
Medicare UPINC74510MD

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. James V. O'connor M.d. 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 Reassignment

Medicare enrollment records show James O'connor reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Shock Trauma Associates, P.A.
0.1 mi
Emergency Care
22 S GREENE ST
Baltimore, MD 21201
  • Reassigned Medicare billing, Maryland enrollment
  • Medicare enrollment name: Shock Trauma Associates PA
  • 541 clinicians in this Medicare group
NPI 1679512909 (410) 328-6704

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 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.

Dialysis procedure including 1 evaluation 90945
Dialysis is a treatment that filters and purifies the blood when your kidneys can't do their job. The procedure involves circulating your blood through a machine that removes waste products. An evaluation is done beforehand to assess your health and determine the best approach for your treatment.
65 services11 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
39 services26 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.
34 services21 patients

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. LEONARD ANANG SOWAH M.D.
Internal Medicine
22 S GREENE ST
BALTIMORE, MD 21201
Baltimore City (410) 706-4619
VISHAL BHATNAGAR MD
Student in an Organized Health Care Education/Training Program
22 S GREENE ST, MEDICINE, N3E09
BALTIMORE, MD 21201
Baltimore City (410) 328-6110
NANCE J FOX P.A.-C
Physician Assistant (Medical)
22 S GREENE ST, G2K36
BALTIMORE, MD 21201
Baltimore City (410) 328-1170
HILARY TAMARA WOLF MD
Pediatrics (Adolescent Medicine)
22 S GREENE ST
BALTIMORE, MD 21201
Baltimore City (410) 328-7373
MS. LINDSAY BREAM O'MEARA CRNP
Nurse Practitioner (Acute Care)
22 S GREENE ST, SUITE S4D07
BALTIMORE, MD 21201
Baltimore City (410) 328-3365
NORA T OLIVER M.D., M.P.H.
Student in an Organized Health Care Education/Training Program
22 S GREENE ST, N3E09
BALTIMORE, MD 21201
Baltimore City (410) 328-5756
SHOSHANA JO WEINER
Internal Medicine
22 S GREENE ST
BALTIMORE, MD 21201
Baltimore City (617) 214-1332
JENNA VANLIERE CANZONIERO M.D.
Internal Medicine
22 S GREENE ST, N3E09
BALTIMORE, MD 21201
Baltimore City (410) 328-5756

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 James O'connor's NPI number?

The NPI number for James O'connor is 1619904455. It was assigned to this individual provider in the NPPES registry on June 27, 2006.

Where is James O'connor located?

James O'connor practices at 22 S Greene St, Baltimore, MD 21201. The listed phone number is (410) 328-6704.

What is James O'connor's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Surgical Critical Care, with taxonomy code 2086S0102X.

Is James O'connor enrolled in Medicare?

Yes. James O'connor is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for James O'connor's services?

According to the CMS Revalidation Reassignment List (October 2026 release), James O'connor reassigns Medicare benefits to Shock Trauma Associates, P.A. (Baltimore, MD). The 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 James O'connor'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 James O'connor was last updated on August 30, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.