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

DR. WILLIAM LEFKOWITZ MD
NPI 1083692495
Pediatrics - Neonatal-Perinatal Medicine in San Antonio, TX

Active since January 05, 2006PECOS EnrolledAccepts Medicare Assignment
4502 MEDICAL DR, SAN ANTONIO, TX 78229(210) 358-4000(210) 358-4775 Get Directions Write a Review

NPPES record last updated: August 27, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 27, 2026, Apr 1, 2019, Mar 11, 2019 (3 updates tracked since 2019).

About Dr. William Lefkowitz Md NPPES

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

DR. WILLIAM LEFKOWITZ MD (NPI 1083692495) is an individual neonatal-perinatal medicine provider in San Antonio, Texas, licensed in Texas (M5325) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1996).

NPPES Registry Identity

NPI1083692495
Entity TypeIndividualMale
Primary Taxonomy2080N0001X
Provider Legal NameDR. WILLIAM LEFKOWITZCredential: MD
Location Address4502 MEDICAL DRSan Antonio, TX 78229-4402
Mailing Address4502 Medical DrSan Antonio, TX 78229-4402 · (210) 358-4000 · Fax (210) 358-4775
Phone(210) 358-4000
Fax(210) 358-4775
Sole ProprietorNo
Medical School CMSOtherGraduated 1996
Enumeration DateJanuary 5, 2006
Last NPPES UpdateAugust 27, 20263 updates tracked since enumeration
NPPES CertifiedAugust 27, 2026
✔ NPI 1083692495 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Neonatal-Perinatal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2080N0001X
Licenses✔ Licensed in TX · M5325✔ Licensed in FL · ME139143✔ Licensed in NM · MD2019-0016
Definition
A pediatrician who is the principal care provider for sick newborn infants. Clinical expertise is used for direct patient care and for consulting with obstetrical colleagues to plan for the care of mothers who have high-risk pregnancies.
4502 MEDICAL DR, San Antonio, TX 78229
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Baylor Scott and White Health Plan, Blue Cross and Blue Shield of Texas, Wellpoint.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. William Lefkowitz 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 ID6608116769
PECOS Enrollment IDI20260902002349
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.

Medicare Billing Reassignments

2

Medicare enrollment records show William Lefkowitz reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Community Medicine Associates
7.0 mi
Family Medicine
903 W MARTIN ST # MS 49-2
San Antonio, TX 78207
  • Reassigned Medicare billing, Texas enrollment
  • 1,129 clinicians in this Medicare group
NPI 1245313329 (210) 358-3401
Florida Hospital Medical Group Inc
1,043 mi
Family Medicine
1115 E RIDGEWOOD ST
Orlando, FL 32803
  • Reassigned Medicare billing, Florida enrollment
  • 3,005 clinicians in this Medicare group
NPI 1225034234 (407) 841-1100

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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.

EDUARDO N. POLLONO MD
Internal Medicine (Cardiovascular Disease)
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Bexar County (210) 358-4000
DR. MAHDIEH IRAN NEJAD PARIZI M.D.
Student in an Organized Health Care Education/Training Program
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Bexar County (210) 358-2015
RICHARD LEE BALLENTINE D.M.D.
Student in an Organized Health Care Education/Training Program
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Bexar County (210) 358-2015
MR. STEVAN REYES PTA
Physical Therapy Assistant
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Bexar County (210) 358-4253
MRS. CLAIRE LELEUX BEADLE CRNA
Nurse Anesthetist, Certified Registered
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Bexar County (210) 358-4000
NNENNA AWAGU CRNA
Nurse Anesthetist, Certified Registered
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Bexar County (210) 567-4500
DR. CYNTHIA N NGUYEN PHARMD
Pharmacist
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Bexar County (210) 743-4034
DR. JONATHAN EDWARD SLOVIK MD
Hospitalist
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Bexar County (210) 358-4000

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 Lefkowitz's NPI number?

The NPI number for William Lefkowitz is 1083692495. It was assigned to this individual provider in the NPPES registry on January 5, 2006.

Where is William Lefkowitz located?

William Lefkowitz practices at 4502 Medical Dr, San Antonio, TX 78229. The listed phone number is (210) 358-4000.

What is William Lefkowitz's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Neonatal-Perinatal Medicine, with taxonomy code 2080N0001X.

Is William Lefkowitz enrolled in Medicare?

Yes. William Lefkowitz 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.

Which organizations bill Medicare for William Lefkowitz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Lefkowitz reassigns Medicare benefits to 2 organizations: Community Medicine Associates (San Antonio, TX) and Florida Hospital Medical Group Inc (Orlando, FL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for William Lefkowitz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does William Lefkowitz accept?

Health plans from Baylor Scott and White Health Plan, Blue Cross and Blue Shield of Texas and Wellpoint list William Lefkowitz 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.

When was this NPI record last updated?

The NPPES record for William Lefkowitz was last updated on August 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 57 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.