DR. STEPHEN DERDAK D.O.
NPI 1659471027
Internal Medicine - Pulmonary Disease in San Antonio, TX

Active since September 25, 2006PECOS EnrolledAccepts Medicare Assignment
89.92/100
CMS Quality Rating
8300 FLOYD CURL DR, SAN ANTONIO, TX 78229(210) 450-9800 Get Directions Write a Review

NPPES record last updated: May 14, 2024. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 14, 2024, Nov 19, 2020, Jan 10, 2019 (3 updates tracked since 2019).

About Dr. Stephen Derdak D.o. NPPES

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

DR. STEPHEN DERDAK D.O. (NPI 1659471027) is an individual pulmonary disease provider in San Antonio, Texas, licensed in Texas (F6571) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS, is affiliated with University Health System, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1659471027
Entity TypeIndividualMale
Primary Taxonomy207RP1001X
Provider Legal NameDR. STEPHEN DERDAKCredential: D.O.
Location Address8300 FLOYD CURL DRSan Antonio, TX 78229-3931
Mailing Address8300 Floyd Curl Dr # Mc8308San Antonio, TX 78229-3931 · (210) 450-9000
Sole ProprietorYes
Medical School CMSUniversity Of North Texas Hsc, College Of Osteopathic MedGraduated 1980
Enumeration DateSeptember 25, 2006
Last NPPES UpdateMay 14, 20243 updates tracked since enumeration
NPPES CertifiedMay 14, 2024
NPI 1659471027 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal Medicine · Pulmonary DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RP1001X
License Licensed in TX · F6571
Definition
An internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex disorders of the lungs.
8300 FLOYD CURL DR, San Antonio, TX 78229

Secondary Practice Locations 2

Location 11100 Wilford Hall Loop Bldg 4554Lackland AFB, TX 78236-5638 · Phone (210) 292-5232 · Fax (210) 292-7964
Location 24502 Medical DrSan Antonio, TX 78229-4402 · Phone (210) 358-4000

Other Identifiers 1

Medicaid148199604TX

Accepted 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

Dr. Stephen Derdak D.o. 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 ID4587844477
PECOS Enrollment IDI20110209001000
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
$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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

89.92/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality79.39
Promoting Interoperability100
Improvement Activities40
Cost62.89

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.

Internal Medicine (Endocrinology, Diabetes & Metabolism)
8300 FLOYD CURL DR
SAN ANTONIO, TX 78229
Obstetrics & Gynecology (Maternal & Fetal Medicine)
8300 FLOYD CURL DR
SAN ANTONIO, TX 78229
Physical Therapist
8300 FLOYD CURL DR, 4TH FLOOR
SAN ANTONIO, TX 78229
Internal Medicine (Infectious Disease)
8300 FLOYD CURL DR
SAN ANTONIO, TX 78229
Physician Assistant
8300 FLOYD CURL DR
SAN ANTONIO, TX 78229
Family Medicine
8300 FLOYD CURL DR
SAN ANTONIO, TX 78229
Orthopaedic Surgery
8300 FLOYD CURL DR, 3RD FLOOR -3C
SAN ANTONIO, TX 78229
Orthopaedic Surgery
8300 FLOYD CURL DR
SAN ANTONIO, TX 78229

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 Stephen Derdak's NPI number?

The NPI number for Stephen Derdak is 1659471027. It was assigned to this individual provider in the NPPES registry on September 25, 2006.

Where is Stephen Derdak located?

Stephen Derdak practices at 8300 Floyd Curl Dr, San Antonio, TX 78229. The listed phone number is (210) 450-9800.

What is Stephen Derdak's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.

Is Stephen Derdak enrolled in Medicare?

Yes. Stephen Derdak 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.

What insurance does Stephen Derdak accept?

Health plans from Baylor Scott and White Health Plan, Blue Cross and Blue Shield of Texas, Imperial Insurance Companies, Inc. and Molina Healthcare list Stephen Derdak 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.

Is Stephen Derdak affiliated with any hospitals?

According to CMS data, Stephen Derdak is affiliated with University Health System.

When was this NPI record last updated?

The NPPES record for Stephen Derdak was last updated on May 14, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.