Robert Marciniak, M.D

NPI: 1700889201

Robert Marciniak, M.D

Q: What is Robert Marciniak's NPI number?

Robert Marciniak's NPI number is 1700889201, a unique 10-digit identifier issued by CMS.

Q: What does Robert Marciniak specialize in?

Robert Marciniak specializes in Hematology & Oncology, taxonomy code 207RX0202X.

Q: Where does Robert Marciniak practice?

Robert Marciniak practices in San Antonio, TX 78229-4427.

Q: When was Robert Marciniak's NPI issued?

Robert Marciniak's NPI was issued on May 27, 2005.

Q: What is Robert Marciniak's provider type?

Robert Marciniak is an Individual Provider under CMS NPI Type 1.

ActiveIndividual ProviderHematology & Oncology

NPI issued: May 27, 2005

Quick Facts

NPI Number

1700889201

TypeIndividual

StatusActive

SpecialtyHematology & Oncology

Taxonomy207RX0202X — Hematology & Oncology

Phone

(210) 450-1000

StateTX

NPI Validation Status: Verified

✅Valid 10-digit NPI number (1700889201)

✅Active status confirmed

✅Verified by CMS NPPES Registry

✅HIPAA compliant identifier

✅Enumeration date on file (May 27, 2005)

Data source: CMS NPPES

Provider Overview

ROBERT MARCINIAK, M.D is a Hematology & Oncology provider based in San Antonio, TX who has been registered with CMS since 2005. This NPI is currently Active under CMS NPPES registry.

Provider Details

NPI Number1700889201

Provider TypeIndividual Provider

GenderMale

CredentialM.D

StatusActive

Enumeration DateMay 27, 2005

Practice Location

CitySan Antonio

StateTX

ZIP Code78229-4427

Phone(210) 450-1000

Specialties & Licenses

★ Primary

SpecialtyHematology & Oncology

Taxonomy Code207RX0202X

License StateTX

Mailing Address

CitySan Antonio

StateTX

ZIP Code78229-4427

Phone(210) 450-1000

Same as practice location

How to Use This NPI

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For Insurance Billing

Use NPI 1700889201 in Box 33 of the CMS-1500 claim form. This number is required by all major insurance carriers to identify the billing provider and process electronic medical claims.

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For Credentialing

Reference NPI 1700889201for provider credential verification. Hospital systems, state licensing boards, and CAQH directories query this number to verify the provider's active clinical status.

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For Patients

Share NPI 1700889201 with your insurance company. If you need to verify out-of-network benefits or file a reimbursement claim, your insurance provider will require this number to process it.

About Hematology & Oncology

Specialists in Hematology & Oncology provide expert clinical care within their specific domain, focusing on the diagnosis, treatment, and management of conditions relevant to their field of practice.

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