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DR. WILLIAM CHRISTOPHER FREY MD
NPI 1427049345
Internal Medicine - Sleep Medicine in Jbsa Lackland, TX

Active since October 31, 2005PECOS Enrolled
1100 WILFORD HALL LOOP, JBSA LACKLAND, TX 78236(201) 292-3322(210) 292-4741 Get Directions Write a Review

NPPES record last updated: March 21, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Mar 21, 2025, Jun 8, 2020, May 18, 2018 (3 updates tracked since 2018).

About Dr. William Christopher Frey Md NPPES

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

DR. WILLIAM CHRISTOPHER FREY MD (NPI 1427049345) is an individual sleep medicine provider in Jbsa Lackland, Texas, licensed in Texas (L4380) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS and maintains a secondary practice location in Jbsa Ft Sam Houston.

NPPES Registry Identity

NPI1427049345
Entity TypeIndividualMale
Primary Taxonomy207RS0012X
Provider Legal NameDR. WILLIAM CHRISTOPHER FREYCredential: MD
Location Address1100 WILFORD HALL LOOPJbsa Lackland, TX 78236
Mailing Address3551 Roger Brooke DrJbsa Ft Sam Houston, TX 78234-4504 · (210) 539-9582
Phone(201) 292-3322
Fax(210) 292-4741
Sole ProprietorNo
Enumeration DateOctober 31, 2005
Last NPPES UpdateMarch 21, 20253 updates tracked since enumeration
NPPES CertifiedMarch 21, 2025
✔ NPI 1427049345 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Sleep MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RS0012X
License✔ Licensed in TX · L4380
Definition
An Internist who practices Sleep Medicine is certified in the subspecialty of sleep medicine and specializes in the clinical assessment, physiologic testing, diagnosis, management and prevention of sleep and circadian rhythm disorders. Sleep specialists treat patients of any age and use multidisciplinary approaches. Disorders managed by sleep specialists include, but are not limited to, sleep related breathing disorders, insomnia, hypersomnias, circadian rhythm sleep disorders, parasomnias and sleep related movement disorders.
Also ListedInternal Medicine · Pulmonary DiseaseTaxonomy 207RP1001X · License L4380 (TX)
1100 WILFORD HALL LOOP, Jbsa Lackland, TX 78236
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Secondary Practice Location 1

Location 13551 Roger Brooke DrJbsa Ft Sam Houston, TX 78234-4504 · Phone (210) 539-9582

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. William Christopher Frey Md 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78236 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.

Referred Medical Equipment & Supplies CMS DME claims 12

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Tubing with integrated heating element for use with positive airway pressure device A4604
DME-Other DME · category DE001N
14 suppliers102 claims102 services$26.39 avg. paid by Medicare
Full face mask used with positive airway pressure device, each A7030
DME-Other DME · category DE001N
9 suppliers51 claims51 services$66.35 avg. paid by Medicare
Face mask interface, replacement for full face mask, each A7031
DME-Other DME · category DE001N
9 suppliers50 claims147 services$25.83 avg. paid by Medicare
Cushion for use on nasal mask interface, replacement only, each A7032
DME-Other DME · category DE001N
9 suppliers57 claims328 services$12.39 avg. paid by Medicare
Pillow for use on nasal cannula type interface, replacement only, pair A7033
DME-Other DME · category DE001N
7 suppliers33 claims186 services$11.03 avg. paid by Medicare
Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034
DME-Other DME · category DE001N
13 suppliers100 claims100 services$40.31 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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. HENRY ANDREW FOERSTER DMD
Dentist (Periodontics)
1100 WILFORD HALL LOOP
JBSA LACKLAND, TX 78236
Bexar County (210) 292-6990
HEIDI DEARBORN DO
Dermatology
1100 WILFORD HALL LOOP
JBSA LACKLAND, TX 78236
Bexar County (210) 292-5350
PARAMJIT BHULLAR MD
Ophthalmology (Cornea and External Diseases Specialist)
1100 WILFORD HALL LOOP
JBSA LACKLAND, TX 78236
Bexar County (210) 916-9900
SARAH MCDONALD MD
Pediatrics
1100 WILFORD HALL LOOP
JBSA LACKLAND, TX 78236
Bexar County (210) 292-4277
DANIEL ALLAN WEIDNER DO
Emergency Medicine
1100 WILFORD HALL LOOP
JBSA LACKLAND, TX 78236
Bexar County (210) 292-3403
THOMAS BERNARD HOLLAND PSY. D
Psychologist (Clinical)
1100 WILFORD HALL LOOP
SAN ANTONIO, TX 78236
Bexar County (304) 702-5431
MICHELL ALEXANDRE LLERENA
Psychiatry & Neurology (Psychiatry)
1100 WILFORD HALL LOOP
JBSA LACKLAND, TX 78236
Bexar County (210) 997-2060
MS. KIMBERLY K MORGAN APN
Nurse Practitioner (Family)
1100 WILFORD HALL LOOP
JBSA LACKLAND, TX 78236
Bexar County (210) 925-8318

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 William Frey's NPI number?

The NPI number for William Frey is 1427049345. It was assigned to this individual provider in the NPPES registry on October 31, 2005.

Where is William Frey located?

William Frey practices at 1100 Wilford Hall Loop, Jbsa Lackland, TX 78236. The listed phone number is (201) 292-3322.

What is William Frey's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Sleep Medicine, with taxonomy code 207RS0012X.

Is William Frey enrolled in Medicare?

Yes. William Frey is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for William Frey was last updated on March 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 months 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.