CHARLES MICHAEL ZAREMBA M.D.
NPI 1750580833
Pathology - Anatomic Pathology & Clinical Pathology in Mcallen, TX

Q: What is Charles Zaremba's NPI number?

The NPI number for Charles Zaremba is 1750580833. It was assigned to this individual provider in the NPPES registry on July 17, 2007.

Q: What is Charles Zaremba's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Charles Zaremba was last updated on June 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.

Active since July 17, 2007PECOS EnrolledAccepts Medicare Assignment

301 W EXPRESSWAY 83, MCALLEN, TX 78503(214) 708-1173 Get Directions Write a Review

NPPES record last updated: June 22, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 12, 2021, Jan 24, 2017 (2 updates tracked since 2017).

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About Charles Michael Zaremba M.d. NPPES

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

CHARLES MICHAEL ZAREMBA M.D. (NPI 1750580833) is an individual anatomic pathology & clinical pathology provider in Mcallen, Texas, licensed in Texas (N9990) and active in the NPI registry since July 2007. He is enrolled in Medicare PECOS, is affiliated with South Texas Health System, and is a graduate of Other (2007).

NPPES Registry Identity

NPI1750580833

Entity TypeIndividualMale

Primary Taxonomy207ZP0102X

Provider Legal NameCHARLES MICHAEL ZAREMBACredential: M.D.

Location Address301 W EXPRESSWAY 83Mcallen, TX 78503-3045

Mailing Address2300 W Pike Blvd, Suite 103-bWeslaco, TX 78596-5640 · (214) 708-1173

Phone(214) 708-1173

Sole ProprietorYes

Medical School CMSOtherGraduated 2007

Enumeration DateJuly 17, 2007

Last NPPES UpdateJune 22, 20262 updates tracked since enumeration

NPPES CertifiedJune 22, 2026

✔ NPI 1750580833 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 TX · N9990

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.

301 W EXPRESSWAY 83, Mcallen, TX 78503

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Accepted Insurance

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

Charles Michael Zaremba M.d. 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 ID4284881657

PECOS Enrollment IDI20120821000366

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

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

Mcallen Hospitalist Group, PLLC

5.6 mi

Internal Medicine

1400 W TRENTON RD
Edinburg, TX 78539

Reassigned Medicare billing, Texas enrollment
143 clinicians in this Medicare group

NPI 1356361976 (956) 388-2187

Mid-Valley Pathology PLLC

16 mi

Anatomic Pathology & Clinical Pathology

1401 E 8TH ST
Weslaco, TX 78596

Reassigned Medicare billing, Texas enrollment
5 clinicians in this Medicare group

NPI 1174076095 (956) 973-5990

Children's Physician Services Of South Texas

119 mi

Plastic Surgery

3533 S ALAMEDA ST
Corpus Christi, TX 78411

Reassigned Medicare billing, Texas enrollment
510 clinicians in this Medicare group

NPI 1568658227 (361) 694-4444

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 22

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.

Flow cytometry technique for dna or cell analysis, each additional marker 88185

Flow cytometry is a technique that helps analyze the physical and chemical characteristics of cells or particles. When an additional marker is used, it aids in identifying specific cell types or stages of disease. This helps in precise diagnosis and treatment planning.

538 services22 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.

314 services78 patients

Pathology examination of tissue using a microscope, intermediate complexity 88305

204 services106 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.

178 services29 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.

90 services59 patients

Special stained specimen slides to examine tissue, initial procedure 88342

72 services58 patients

Preparation of tissue for examination by removing any calcium present 88311

This procedure involves treating tissue samples to remove any calcium, which can interfere with the examination. The tissue is soaked in a special solution that safely dissolves the calcium, leaving the tissue intact for accurate analysis. This helps in making precise diagnoses.

54 services40 patients

Special stained specimen slides to examine tissue, each additional procedure 88341

43 services15 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.

41 services27 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.

39 services17 patients

Flow cytometry technique for dna or cell analysis, 16 or more markers 88189

Flow cytometry is a method used to measure and analyze cells. It uses a beam of light to detect up to 16 or more markers on cells, helping to identify their type, function, or abnormalities. This technique aids in diagnosing various health conditions.

36 services30 patients

Special stained specimen slides to examine tissue including interpretation and report 88313

32 services11 patients

Microscopic genetic analysis of tumor, manual 88360

Microscopic genetic analysis of a tumor involves examining your tumor's genes under a microscope. This helps identify specific genetic changes in the tumor cells. This information can aid in diagnosing, predicting disease progression, and determining the most effective treatment options.

31 services20 patients

Blood smear interpretation by physician with written report 85060

Blood smear interpretation is a lab test where your doctor examines a sample of your blood under a microscope. They look for abnormalities in your blood cells which can help diagnose various conditions. You'll receive a written report of the findings.

30 services28 patients

Pathology examination of tissue using a microscope, moderately low complexity 88304

A pathology examination of tissue, moderately low complexity, involves studying a small sample of your body tissue under a microscope. It helps to identify any abnormal cells or diseases. It's a routine procedure, not complex, and provides crucial insights for your diagnosis.

26 services23 patients

Flow cytometry technique for dna or cell analysis, first marker 88184

Flow cytometry is a technique used to examine microscopic particles, like cells or DNA. It employs a beam of light to detect and measure physical and chemical characteristics of these particles. The 'first marker' refers to a specific characteristic or feature used to identify a particular cell or particle.

25 services22 patients

Flow cytometry technique for dna or cell analysis, 16 or more markers 88189

24 services18 patients

Pathology examination of tissue using a microscope, limited examination 88300

A pathology examination of tissue using a microscope is a procedure where a small sample of your tissue is observed under a microscope. This limited examination helps identify any abnormal cells or signs of disease, aiding in accurate diagnosis and treatment planning.

20 services18 patients

Microscopic genetic analysis of tumor, manual 88360

17 services11 patients

Bone marrow, smear interpretation 85097

Bone marrow smear interpretation is a procedure where a small sample of your bone marrow is taken and examined under a microscope. This helps doctors identify any abnormal cells or signs of diseases such as anemia, leukemia, or infections. It's a crucial step in diagnosing various blood disorders.

16 services15 patients

Bone marrow, smear interpretation 85097

15 services13 patients

Preparation of tissue for examination by removing any calcium present 88311

15 services12 patients

Hospital Affiliations CMS Care Compare

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

South Texas Health System

Acute Care Hospitals · Edinburg, TX

3/5 CMS rating

OwnershipProprietary

CMS Certification Number450119

Location1102 W Trenton RoadEdinburg, TX 78539 · Hidalgo County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78503 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

$126.40 typical visit price

range $54.84 – $166.88

Typical copayment $31.60 (range $13.71 – $41.72)

Most-billed visit code 99204

Established Patient

$97.05 typical visit price

range $17.52 – $136.11

Typical copayment $24.26 (range $4.38 – $34.02)

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 20

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

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