Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

GERARDO MANUEL ROSAS MD
NPI 1912495664
Internal Medicine - Hematology & Oncology in San Antonio, TX

Q: What is Gerardo Rosas's NPI number?

The NPI number for Gerardo Rosas is 1912495664. It was assigned to this individual provider in the NPPES registry on April 27, 2018.

Q: What is Gerardo Rosas's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Q: When was this NPI record last updated?

The NPPES record for Gerardo Rosas was last updated on August 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 days 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 April 27, 2018PECOS EnrolledAccepts Medicare Assignment

4450 MEDICAL DR FL 1, SAN ANTONIO, TX 78229(210) 575-3817(210) 575-4113 Get Directions Write a Review

NPPES record last updated: August 1, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Aug 1, 2026, Jun 11, 2024, Apr 27, 2018 (3 updates tracked since 2018).

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About Gerardo Manuel Rosas Md NPPES

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

GERARDO MANUEL ROSAS MD (NPI 1912495664) is an individual hematology & oncology provider in San Antonio, Texas, licensed in Texas (T0909) and active in the NPI registry since April 2018. He is enrolled in Medicare PECOS, is affiliated with University Health System, and is a graduate of Other (2018).

NPPES Registry Identity

NPI1912495664

Entity TypeIndividualMale

Primary Taxonomy207RH0003X

Provider Legal NameGERARDO MANUEL ROSASCredential: MD

Location Address4450 MEDICAL DR FL 1San Antonio, TX 78229-3710

Mailing Address4450 Medical Dr Fl 1San Antonio, TX 78229-3710 · (210) 575-3817 · Fax (210) 575-4113

Phone(210) 575-3817

Fax(210) 575-4113

Sole ProprietorNo

Medical School CMSOtherGraduated 2018

Enumeration DateApril 27, 2018

Last NPPES UpdateAugust 1, 20263 updates tracked since enumeration

NPPES CertifiedAugust 1, 2026

✔ NPI 1912495664 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RH0003X

License✔ Licensed in TX · T0909

Definition

An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

Also ListedInternal MedicineTaxonomy 207R00000X · License T0909 (TX)

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

4450 MEDICAL DR FL 1, San Antonio, TX 78229

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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, Imperial Insurance Companies, Inc., Molina Healthcare.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Gerardo Manuel Rosas Md 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 ID8729420369

PECOS Enrollment IDI20240528001796

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.

Hospital Affiliations CMS Care Compare

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

University Health System

Acute Care Hospitals · San Antonio, TX

3/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number450213

Location4502 Medical DrSan Antonio, TX 78229 · Bexar County

Emergency services Birthing friendly

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 15

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

DR. TIMOTHY S FENSKE MD

Internal Medicine (Hematology & Oncology)