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DR. MARK STEPHEN DOLZ DO
NPI 1104833631
Pathology - Anatomic Pathology & Clinical Pathology in Jacksonville, IL

Active since August 01, 2006PECOS EnrolledAccepts Medicare Assignment
1600 W WALNUT, PASSAVANT AREA HOSPITAL - LABORATORY, JACKSONVILLE, IL 62650(217) 245-9541(217) 479-5648 Get Directions Write a Review

NPPES record last updated: June 6, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Mark Stephen Dolz Do NPPES

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

DR. MARK STEPHEN DOLZ DO (NPI 1104833631) is an individual anatomic pathology & clinical pathology provider in Jacksonville, Illinois, licensed in Illinois (036094413) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Knapp Medical Center, and is a graduate of Other (1994).

NPPES Registry Identity

NPI1104833631
Entity TypeIndividualMale
Primary Taxonomy207ZP0102X
Provider Legal NameDR. MARK STEPHEN DOLZCredential: DO
Location Address1600 W WALNUT, PASSAVANT AREA HOSPITAL - LABORATORYJacksonville, IL 62650
Mailing Address7433 N 5th StMcallen, IL 68504 · (956) 410-9071 · Fax (956) 410-9071
Phone(217) 245-9541
Fax(217) 479-5648
Sole ProprietorNo
Medical School CMSOtherGraduated 1994
Enumeration DateAugust 1, 2006
Last NPPES UpdateJune 6, 2025
NPPES CertifiedMay 20, 2025
✔ NPI 1104833631 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZP0102X
License✔ Licensed in IL · 036094413
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.
1600 W WALNUT, Jacksonville, IL 62650
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Other Identifiers 1

Medicaid0360944131IL

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and more.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

Dr. Mark Stephen Dolz Do 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 ID4385606748
PECOS Enrollment IDI20171218002655
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 Mark Dolz reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Valley Pathology PA
1,037 mi
Anatomic Pathology & Clinical Pathology
5501 S MCCOLL RD
Edinburg, TX 78539
  • Reassigned Medicare billing, Texas enrollment
  • Medicare enrollment name: Valley Pathology, P.A.
  • 6 clinicians in this Medicare group
NPI 1881929321 (956) 423-3335

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.
557 services308 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.
212 services43 patients
Special stained specimen slides to identify organisms including interpretation and report 88312
This service involves coloring specimen slides in a special way to help identify organisms. The colors make different parts of the organism stand out. Afterward, a detailed interpretation and report on the findings are provided.
146 services88 patients
Cell examination of specimen, concentration technique 88108
Cell examination of a specimen using a concentration technique is a lab process that enhances the detection of cells in a sample. This method helps to focus on key areas of the sample, making it easier to spot abnormalities or changes. It's a crucial part of diagnosing and monitoring certain health conditions.
135 services113 patients
Special stained specimen slides to examine tissue including interpretation and report 88313
Special stained specimen slides are used to examine tissue samples. This involves applying special dyes to the tissue, which helps to highlight certain features under a microscope. The findings are then interpreted and a report is provided. This can aid in diagnosing various health conditions.
88 services28 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.
71 services58 patients

Hospital Affiliations CMS Care Compare 4

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

Knapp Medical Center

Acute Care Hospitals · Weslaco, TX
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number450128
Location1401 East Eight StreetWeslaco, TX 78596 · Hidalgo County
Emergency services Birthing friendly

Mission Regional Medical Center

Acute Care Hospitals · Mission, TX
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number450176
Location900 South Bryan RoadMission, TX 78572 · Hidalgo County
Birthing friendly

Harlingen Medical Center

Acute Care Hospitals · Harlingen, TX
4/5 CMS rating
OwnershipProprietary
CMS Certification Number450855
Location5501 South Expressway 77Harlingen, TX 78550 · Cameron County
Emergency services Birthing friendly

Doctors Hosptal At Renaissance

Acute Care Hospitals · Edinburg, TX
3/5 CMS rating
OwnershipPhysician
CMS Certification Number450869
Location5501 South MccollEdinburg, TX 78539 · Hidalgo County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 62650 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
$127.46 typical visit price
range $54.80 – $168.44
Typical copayment $31.86 (range $13.70 – $42.11)
Most-billed visit code 99204
Established Patient
$97.25 typical visit price
range $17.16 – $136.56
Typical copayment $24.31 (range $4.29 – $34.14)
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.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. NEELAM VERMA M.D.
Obstetrics & Gynecology (Obstetrics)
1600 W WALNUT
JACKSONVILLE, IL 62650
Morgan County (217) 243-8455

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 Mark Dolz's NPI number?

The NPI number for Mark Dolz is 1104833631. It was assigned to this individual provider in the NPPES registry on August 1, 2006.

Where is Mark Dolz located?

Mark Dolz practices at 1600 W Walnut Passavant Area Hospital - Laboratory, Jacksonville, IL 62650. The listed phone number is (217) 245-9541.

What is Mark Dolz's specialty?

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

Is Mark Dolz enrolled in Medicare?

Yes. Mark Dolz 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 organization bills Medicare for Mark Dolz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Dolz reassigns Medicare benefits to Valley Pathology PA (Edinburg, TX). 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 Mark Dolz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mark Dolz accept?

Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 1 other insurer list Mark Dolz 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 Mark Dolz affiliated with any hospitals?

According to CMS data, Mark Dolz is affiliated with Knapp Medical Center, Mission Regional Medical Center, Harlingen Medical Center and Doctors Hosptal At Renaissance.

When was this NPI record last updated?

The NPPES record for Mark Dolz was last updated on June 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.