DR. DENNIS A TWEEDY M.D.
NPI 1205874948
Internal Medicine - Hematology & Oncology in Austin, TX

Active since June 03, 2006PECOS EnrolledAccepts Medicare Assignment
4101 JAMES CASEY ST, SUITE 250, AUSTIN, TX 78745(512) 419-9733(512) 440-1747 Get Directions Write a Review

NPPES record last updated: May 10, 2018. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Dennis A Tweedy M.d. NPPES

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

DR. DENNIS A TWEEDY M.D. (NPI 1205874948) is an individual hematology & oncology provider in Austin, Texas, licensed in Texas (H7840) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Virginia School Of Medicine (1979).

NPPES Registry Identity

NPI1205874948
Entity TypeIndividualMale
Primary Taxonomy207RH0003X
Provider Legal NameDR. DENNIS A TWEEDYCredential: M.D.
Location Address4101 JAMES CASEY ST, SUITE 250Austin, TX 78745-1110
Mailing AddressPo Box 911230Dallas, TX 75391-1230 · (972) 997-8000 · Fax (972) 237-0813
Fax(512) 440-1747
Sole ProprietorNo
Medical School CMSUniversity Of Virginia School Of MedicineGraduated 1979
Enumeration DateJune 3, 2006
Last NPPES UpdateMay 10, 2018
NPI 1205874948 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License Licensed in TX · H7840
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.
4101 JAMES CASEY ST, Austin, TX 78745

Other Identifiers 7

OtherP00691573TX · Railroad Medicare
Medicaid0811853-01TX
Medicaid132779302TX
Medicaid132779310TX
Other830004370TX · Railroad Medicare Number
Other8BP363TX · Bcbs Of Tx
Medicaid132779309TX

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

Dr. Dennis A Tweedy 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 ID5395731616
PECOS Enrollment IDI20040422000888
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.

Areas of Expertise CMS Part B claims 3

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.

Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session G6015
Intensity-modulated radiation therapy (IMRT) is a type of cancer treatment. It uses advanced technology to manipulate photon beams of radiation to conform to the shape of a tumor. IMRT allows for the radiation dose to conform more precisely to the three-dimensional shape of the tumor by modulating—or controlling—the intensity of the radiation beam. This can result in better tumor control and less harm to healthy tissue.
24 services17 patients
Administration of chemotherapy into vein, 1 hour or less 96413
Chemotherapy is a treatment that uses drugs to destroy cancer cells. When administered into a vein, it's often through an IV. This procedure usually lasts 1 hour or less. You may feel a slight pinch as the needle is inserted, but it's generally painless.
18 services16 patients
Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less 96365
This is a procedure where a medical professional inserts a small tube into your vein to deliver medication, nutrients, or fluids directly into your bloodstream. This can be for treatment, prevention, or diagnosis. The process typically takes less than an hour.
14 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78745 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
$174.00 typical visit price
range $57.88 – $174.00
Typical copayment $43.50 (range $14.47 – $43.50)
Most-billed visit code 99205
Established Patient
$101.65 typical visit price
range $18.88 – $142.23
Typical copayment $25.41 (range $4.72 – $35.55)
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 18

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

Obstetrics & Gynecology
4101 JAMES CASEY ST, STE 330
AUSTIN, TX 78745
Physician Assistant
4101 JAMES CASEY ST, SUITE 100
AUSTIN, TX 78745
Radiology (Radiation Oncology)
4101 JAMES CASEY ST, SUTIE 100
AUSTIN, TX 78745
Clinical Nurse Specialist
4101 JAMES CASEY ST, SUITE 100
AUSTIN, TX 78745
Pharmacy (Community/Retail Pharmacy)
4101 JAMES CASEY ST, SUITE 100
AUSTIN, TX 78745
Clinical Nurse Specialist (Adult Health)
4101 JAMES CASEY ST, SUITE 330
AUSTIN, TX 78745
Internal Medicine (Medical Oncology)
4101 JAMES CASEY ST, SUITE 100
AUSTIN, TX 78745
Internal Medicine (Medical Oncology)
4101 JAMES CASEY ST, 100
AUSTIN, TX 78745

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 Dennis Tweedy's NPI number?

The NPI number for Dennis Tweedy is 1205874948. It was assigned to this individual provider in the NPPES registry on June 3, 2006.

Where is Dennis Tweedy located?

Dennis Tweedy practices at 4101 James Casey St Suite 250, Austin, TX 78745. The listed phone number is (512) 419-9733.

What is Dennis Tweedy's specialty?

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

Is Dennis Tweedy enrolled in Medicare?

Yes. Dennis Tweedy 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.

When was this NPI record last updated?

The NPPES record for Dennis Tweedy was last updated on May 10, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.