1. Home
  2. Directory
  3. Maryland
  4. Rockville
  5. Nurse Practitioner
  6. NPI Profile

MRS. KAREN ANN O'CONNOR C.R.N.P.
NPI 1861449191
Nurse Practitioner in Rockville, MD

Active since May 30, 2006PECOS EnrolledAccepts Medicare Assignment
1300 PICCARD DR STE 202, ROCKVILLE, MD 20850(240) 686-2300 Get Directions Write a Review

NPPES record last updated: March 29, 2010. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Mrs. Karen Ann O'connor C.r.n.p. NPPES

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

MRS. KAREN ANN O'CONNOR C.R.N.P. (NPI 1861449191) is an individual nurse practitioner in Rockville, Maryland, licensed in Maryland (R108183) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS, is affiliated with Calverthealth Medical Center, and is a graduate of Other (1999).

NPPES Registry Identity

NPI1861449191
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameMRS. KAREN ANN O'CONNORCredential: C.R.N.P.
Location Address1300 PICCARD DR STE 202Rockville, MD 20850-4697
Mailing Address3010 Tobacco RdChesapeake Beach, MD 20732-3618 · (410) 414-3335
Phone(240) 686-2300
Sole ProprietorNo
Medical School CMSOtherGraduated 1999
Enumeration DateMay 30, 2006
Last NPPES UpdateMarch 29, 2010
✔ NPI 1861449191 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License✔ Licensed in MD · R108183
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
1300 PICCARD DR STE 202, Rockville, MD 20850
Open in Google Maps ↗

Other Names 1

Former Name (1)Karen Tavenner O'connor Crnp

Other Identifiers 3

Medicare UPINQ10918MD
Medicaid404181000MD
Medicare ID-Type UnspecifiedKR80I072MD

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

Mrs. Karen Ann O'connor C.r.n.p. 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 ID9931198389
PECOS Enrollment IDI20040510001649
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 2

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.
259 services164 patients
Critical care, each additional 30 minutes 99292
Critical care refers to special attention given to patients facing life-threatening conditions. Each additional 30 minutes indicates the extension of this specialized care. This might include close monitoring, medication adjustments, and immediate interventions as needed.
88 services33 patients

Hospital Affiliations CMS Care Compare

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

Calverthealth Medical Center

Acute Care Hospitals · Prince Frederick, MD
4/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number210039
Location100 Hospital RoadPrince Frederick, MD 20678 · Calvert County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20850 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
$100.31 typical visit price
range $65.18 – $194.86
Typical copayment $25.07 (range $16.29 – $48.71)
Most-billed visit code 99203
Established Patient
$113.72 typical visit price
range $21.40 – $158.88
Typical copayment $28.43 (range $5.35 – $39.72)
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.

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 Karen O'connor's NPI number?

The NPI number for Karen O'connor is 1861449191. It was assigned to this individual provider in the NPPES registry on May 30, 2006. The provider is also known as Karen Tavenner O'connor Crnp.

Where is Karen O'connor located?

Karen O'connor practices at 1300 Piccard Dr Ste 202, Rockville, MD 20850. The listed phone number is (240) 686-2300.

What is Karen O'connor's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Karen O'connor enrolled in Medicare?

Yes. Karen O'connor 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 Karen O'connor affiliated with any hospitals?

According to CMS data, Karen O'connor is affiliated with Calverthealth Medical Center.

When was this NPI record last updated?

The NPPES record for Karen O'connor was last updated on March 29, 2010. NPI Profile syncs with the weekly NPPES data releases published by CMS.