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HEATHER MICHELLE O'CONNOR D.O
NPI 1619401221
Pathology - Anatomic Pathology & Clinical Pathology in Charleston, SC

Active since April 20, 2017PECOS EnrolledAccepts Medicare Assignment
169 ASHLEY AVENUE ROOM 202, MAIN HOSPITAL MSC333, CHARLESTON, SC 29425(843) 792-1086 Get Directions Write a Review

NPPES record last updated: January 20, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jan 20, 2022, Apr 20, 2017 (2 updates tracked since 2017).

About Heather Michelle O'connor D.o NPPES

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

HEATHER MICHELLE O'CONNOR D.O (NPI 1619401221) is an individual anatomic pathology & clinical pathology provider in Charleston, South Carolina, licensed in South Carolina (41033) and active in the NPI registry since April 2017. She is enrolled in Medicare PECOS, is affiliated with Mercy Hospital Southeast, and is a graduate of Other (2017).

NPPES Registry Identity

NPI1619401221
Entity TypeIndividualFemale
Primary Taxonomy207ZP0102X
Provider Legal NameHEATHER MICHELLE O'CONNORCredential: D.O
Location Address169 ASHLEY AVENUE ROOM 202, MAIN HOSPITAL MSC333Charleston, SC 29425
Mailing AddressPo Box 751461Charlotte, NC 28275-1461 · (843) 792-6200
Phone(843) 792-1086
Sole ProprietorNo
Medical School CMSOtherGraduated 2017
Enumeration DateApril 20, 2017
Last NPPES UpdateJanuary 20, 20222 updates tracked since enumeration
NPPES CertifiedJanuary 20, 2022
✔ NPI 1619401221 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZP0102X
License✔ Licensed in SC · 41033
Definition
A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
169 ASHLEY AVENUE ROOM 202, Charleston, SC 29425
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Heather Michelle O'connor 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 ID5799050993
PECOS Enrollment IDI20210630004163, I20230627003279
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

3

Medicare enrollment records show Heather O'connor reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Medical Associates
Same address
Pediatric Emergency Medicine
171 ASHLEY AVE
Charleston, SC 29425
  • Reassigned Medicare billing, South Carolina enrollment
  • Medicare enrollment name: University Medical Associates Of The Medical University Of South Carol
  • 2,594 clinicians in this Medicare group
NPI 1548413453 (843) 792-1414
Musc Community Physicians
72 mi
Internal Medicine
506 NORTH ST
Bamberg, SC 29003
  • Reassigned Medicare billing, South Carolina enrollment
  • 2,389 clinicians in this Medicare group
NPI 1841878006 (803) 245-6290
Southeast Missouri Hospital Physicians, LLC
627 mi
Family Medicine
1701 LACEY ST
Cape Girardeau, MO 63701
  • Reassigned Medicare billing, Missouri enrollment
  • 470 clinicians in this Medicare group
NPI 1558311522 (573) 331-6880

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 13

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.

Pathology examination of tissue using a microscope, intermediate complexity 88305
A pathology examination of tissue with intermediate complexity involves studying a small sample of your body tissue under a microscope. This helps in identifying any abnormal cells or signs of disease. It's a detailed process requiring expert analysis to ensure accurate results.
469 services292 patients
Pathology examination of tissue using a microscope, intermediate complexity 88305
A pathology examination of tissue with intermediate complexity involves studying a small sample of your body tissue under a microscope. This helps in identifying any abnormal cells or signs of disease. It's a detailed process requiring expert analysis to ensure accurate results.
271 services207 patients
Pathology examination of tissue using a microscope, moderately high complexity 88307
A pathology examination of tissue with moderate complexity involves a detailed study of a small tissue sample from your body. Using a microscope, experts analyze the tissue's structure and cells to identify any abnormalities. This helps in diagnosing various health conditions accurately.
82 services65 patients
Special stained specimen slides to examine tissue, each additional procedure 88341
Special stained specimen slides are used to analyze tissue in detail. In this process, extra procedures may be needed for a more thorough examination. These involve applying special stains to the tissue on slides, enhancing specific elements for closer study.
82 services23 patients
Special stained specimen slides to examine tissue, initial procedure 88342
This procedure involves the use of specially stained slides to examine tissue samples. The initial process involves obtaining a small tissue sample from your body. This sample is then placed on a slide and stained with special dyes to highlight different structures and elements. The stained slide is then examined under a microscope to help diagnose any potential health issues.
72 services58 patients
Cell examination of body fluid, smears 88104
Cell examination of body fluid, or smear, is a laboratory test where a sample of your body fluid is taken. It's then thinly spread on a glass slide and examined under a microscope to check for abnormalities. This can help diagnose various health conditions.
53 services41 patients

Hospital Affiliations CMS Care Compare 4

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

Mercy Hospital Southeast

Acute Care Hospitals · Cape Girardeau, MO
1/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260110
Location1701 Lacey StCape Girardeau, MO 63701 · Cape Girardeau County
Emergency services Birthing friendly

Mercy Hospital Stoddard

Acute Care Hospitals · Dexter, MO
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260160
Location1200 N One Mile RdDexter, MO 63841 · Stoddard County
Emergency services

Tidelands Georgetown Memorial Hospital

Acute Care Hospitals · Georgetown, SC
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number420020
Location606 Black River Rd Drawer 1718Georgetown, SC 29440 · Georgetown County
Emergency services

Tidelands Waccamaw Community Hospital

Acute Care Hospitals · Murrells Inlet, SC
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number420098
Location4070 Hwy 17Murrells Inlet, SC 29576 · Horry County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 29425 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
$124.04 typical visit price
range $53.57 – $163.84
Typical copayment $31.01 (range $13.39 – $40.96)
Most-billed visit code 99204
Established Patient
$95.12 typical visit price
range $16.96 – $133.52
Typical copayment $23.78 (range $4.24 – $33.38)
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 Heather O'connor's NPI number?

The NPI number for Heather O'connor is 1619401221. It was assigned to this individual provider in the NPPES registry on April 20, 2017.

Where is Heather O'connor located?

Heather O'connor practices at 169 Ashley Avenue Room 202 Main Hospital Msc333, Charleston, SC 29425. The listed phone number is (843) 792-1086.

What is Heather O'connor's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Is Heather O'connor enrolled in Medicare?

Yes. Heather 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.

Which organizations bill Medicare for Heather O'connor's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Heather O'connor reassigns Medicare benefits to 3 organizations: University Medical Associates (Charleston, SC), Musc Community Physicians (Bamberg, SC) and Southeast Missouri Hospital Physicians, LLC (Cape Girardeau, MO). 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 Heather O'connor's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Heather O'connor accept?

Health plans from Anthem Blue Cross and Blue Shield list Heather O'connor 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 Heather O'connor affiliated with any hospitals?

According to CMS data, Heather O'connor is affiliated with Mercy Hospital Southeast, Mercy Hospital Stoddard, Tidelands Georgetown Memorial Hospital and Tidelands Waccamaw Community Hospital.

When was this NPI record last updated?

The NPPES record for Heather O'connor was last updated on January 20, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.