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DR. GERALD THOMAS MAYER M.D.
NPI 1669415642
Pediatrics in San Antonio, TX

Active since June 14, 2006PECOS Enrolled
13022 JONES MALTSBERGER RD, SAN ANTONIO, TX 78247(210) 491-0772(210) 481-2769 Get Directions Write a Review

NPPES record last updated: May 24, 2023. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: May 24, 2023, Jan 22, 2021 (2 updates tracked since 2021).

About Dr. Gerald Thomas Mayer M.d. NPPES

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

DR. GERALD THOMAS MAYER M.D. (NPI 1669415642) is an individual pediatrics provider in San Antonio, Texas, licensed in Texas (J3154) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and maintains a secondary practice location in San Antonio.

NPPES Registry Identity

NPI1669415642
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameDR. GERALD THOMAS MAYERCredential: M.D.
Location Address13022 JONES MALTSBERGER RDSan Antonio, TX 78247-4219
Mailing Address13022 Jones Maltsberger RdSan Antonio, TX 78247-4219 · (210) 491-0772
Phone(210) 491-0772
Fax(210) 481-2769
Sole ProprietorYes
Enumeration DateJune 14, 2006
Last NPPES UpdateMay 24, 20232 updates tracked since enumeration
NPPES CertifiedMay 24, 2023
✔ NPI 1669415642 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in TX · J3154
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
Also ListedEmergency Medicine · Pediatric Emergency MedicineTaxonomy 207PP0204X · License J3154 (TX)
13022 JONES MALTSBERGER RD, San Antonio, TX 78247
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Secondary Practice Location 1

Location 120821 US Highway 281 N Ste 324San Antonio, TX 78258-7597 · Phone (210) 998-4758 · Fax (210) 314-5044

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, Oscar Health, Oscar Insurance Company.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Gerald Thomas Mayer M.d. 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.

Medicare Billing Reassignment

Medicare enrollment records show Gerald Mayer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Acs Primary Care Physicians Southwest, PA
292 mi
Emergency Medicine
1900 HOSPITAL BLVD
Gainesville, TX 76240
  • Reassigned Medicare billing, Texas enrollment
  • 1,193 clinicians in this Medicare group
NPI 1538101019 (925) 924-1600

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78247 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
$84.92 typical visit price
range $54.84 – $166.88
Typical copayment $21.23 (range $13.71 – $41.72)
Most-billed visit code 99203
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 3

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

OZIEL ORTIZ M.D.
Pediatrics
13022 JONES MALTSBERGER RD
SAN ANTONIO, TX 78247
Bexar County (210) 491-0772
JADE GAREE-DEXTER M.D.
Pediatrics
13022 JONES MALTSBERGER RD
SAN ANTONIO, TX 78247
Bexar County (210) 491-0772
TEXAS INPATIENT PEDIATRICS, PA
Pediatrics
13022 JONES MALTSBERGER RD
SAN ANTONIO, TX 78247
Bexar County (210) 491-0772

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 Gerald Mayer's NPI number?

The NPI number for Gerald Mayer is 1669415642. It was assigned to this individual provider in the NPPES registry on June 14, 2006.

Where is Gerald Mayer located?

Gerald Mayer practices at 13022 Jones Maltsberger Rd, San Antonio, TX 78247. The listed phone number is (210) 491-0772.

What is Gerald Mayer's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Gerald Mayer enrolled in Medicare?

Yes. Gerald Mayer is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Gerald Mayer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gerald Mayer reassigns Medicare benefits to Acs Primary Care Physicians Southwest, PA (Gainesville, TX). The 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 Gerald Mayer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gerald Mayer accept?

Health plans from Blue Cross and Blue Shield of Texas, Oscar Health and Oscar Insurance Company list Gerald Mayer 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 Gerald Mayer was last updated on May 24, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.