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DR. ROBERT A. MARCINIAK M.D.
NPI 1700889201
Internal Medicine - Medical Oncology in San Antonio, TX

Active since May 27, 2005PECOS Enrolled
7979 WURZBACH RD, SAN ANTONIO, TX 78229(210) 450-1000(210) 450-1150 Get Directions Write a Review

NPPES record last updated: August 18, 2010. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Robert A. Marciniak M.d. NPPES

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

DR. ROBERT A. MARCINIAK M.D. (NPI 1700889201) is an individual medical oncology provider in San Antonio, Texas, licensed in Texas (L3005) and active in the NPI registry since May 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1700889201
Entity TypeIndividualMale
Primary Taxonomy207RX0202X
Provider Legal NameDR. ROBERT A. MARCINIAKCredential: M.D.
Location Address7979 WURZBACH RDSan Antonio, TX 78229-4427
Mailing Address7703 Floyd Curl Dr, Mc 7977San Antonio, TX 78229-3901 · (210) 257-1400 · Fax (210) 257-1428
Phone(210) 450-1000
Fax(210) 450-1150
Sole ProprietorNo
Enumeration DateMay 27, 2005
Last NPPES UpdateAugust 18, 2010
✔ NPI 1700889201 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RX0202X
License✔ Licensed in TX · L3005
Definition
An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.
7979 WURZBACH RD, San Antonio, TX 78229
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Other Identifiers 2

Medicare PIN8630K6TX
Medicaid149475904TX

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 (PECOS)

Dr. Robert A. Marciniak 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 Reassignments

5

Medicare enrollment records show Robert Marciniak reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Frio Hospital Association
52 mi
Clinic/Center
105 E HACKBERRY ST STE A
Pearsall, TX 78061
  • Reassigned Medicare billing, Texas enrollment
  • 100 clinicians in this Medicare group
NPI 1053195032 (830) 334-2656
Texas Emergency Group LLC
83 mi
Emergency Medicine
2550 N ESPLANADE ST
Cuero, TX 77954
  • Reassigned Medicare billing, Texas enrollment
  • 135 clinicians in this Medicare group
NPI 1699288811 (361) 275-6191
Southwest Medical Associates, Inc.
311 mi
Emergency Medicine
1207 S BAILEY ST
Electra, TX 76360
  • Reassigned Medicare billing, Texas enrollment
  • 155 clinicians in this Medicare group
NPI 1831299122 (940) 495-3981
Concord Medical Group PLLC
340 mi
Emergency Medicine
1602 AVENUE Q
Lubbock, TX 79401
  • Reassigned Medicare billing, Texas enrollment
  • 1,338 clinicians in this Medicare group
NPI 1083630610 (888) 264-0330
Concord Medical Group Of Texas PLLC
341 mi
Emergency Medicine
1602 AVENUE Q
Lubbock, TX 79401
  • Reassigned Medicare billing, Texas enrollment
  • 1,439 clinicians in this Medicare group
NPI 1750790762 (888) 264-0330

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 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.

Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
20 services20 patients
Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
16 services16 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78229 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
$166.88 typical visit price
range $54.84 – $166.88
Typical copayment $41.72 (range $13.71 – $41.72)
Most-billed visit code 99205
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.

DR. MATTHEW JAMES BUTLER M.D.
Internal Medicine (Hematology & Oncology)
7979 WURZBACH RD
SAN ANTONIO, TX 78229
Bexar County (210) 450-1143
DR. ANAND B KARNAD M.D.
Internal Medicine (Medical Oncology)
7979 WURZBACH RD
SAN ANTONIO, TX 78229
Bexar County (210) 450-1000
NICCI OWUSU-BRACKETT M.D.
Surgery (Surgical Oncology)
7979 WURZBACH RD
SAN ANTONIO, TX 78229
Bexar County (210) 450-5990
IAN M THOMPSON JR. MD
Urology
7979 WURZBACH RD
SAN ANTONIO, TX 78229
Bexar County (210) 450-1300
SHRADDHA DALWADI M.D.
Radiology (Radiation Oncology)
7979 WURZBACH RD
SAN ANTONIO, TX 78229
Bexar County (210) 450-6490
RAYMUNDO TROCHE
Registered Nurse (Oncology)
7979 WURZBACH RD
SAN ANTONIO, TX 78229
Bexar County (210) 450-1861
DR. JESLINA JAYANTI RAJ PSYD
Psychologist (Clinical)
7979 WURZBACH RD
SAN ANTONIO, TX 78229
Bexar County (210) 450-9000
MR. JUSTIN MICHAEL BROWN ACNP
Nurse Practitioner (Acute Care)
7979 WURZBACH RD, 3RD FLOOR-URSCHEL BLDG
SAN ANTONIO, TX 78229
Bexar County (210) 450-0999

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 Robert Marciniak's NPI number?

The NPI number for Robert Marciniak is 1700889201. It was assigned to this individual provider in the NPPES registry on May 27, 2005.

Where is Robert Marciniak located?

Robert Marciniak practices at 7979 Wurzbach Rd, San Antonio, TX 78229. The listed phone number is (210) 450-1000.

What is Robert Marciniak's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

Is Robert Marciniak enrolled in Medicare?

Yes. Robert Marciniak is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Robert Marciniak's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Robert Marciniak reassigns Medicare benefits to 5 organizations: Frio Hospital Association (Pearsall, TX), Texas Emergency Group LLC (Cuero, TX), Southwest Medical Associates, Inc. (Electra, TX), Concord Medical Group PLLC (Lubbock, TX) and Concord Medical Group Of Texas PLLC (Lubbock, TX). 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 Robert Marciniak's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Robert Marciniak accept?

Health plans from Blue Cross and Blue Shield of Texas list Robert Marciniak 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.

When was this NPI record last updated?

The NPPES record for Robert Marciniak was last updated on August 18, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.