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WALTER WALTHALL MD
NPI 1750460317
Family Medicine in San Antonio, TX

Active since November 03, 2006PECOS EnrolledAccepts Medicare AssignmentCLIA 45D2334413 · Waiver
1919 OAKWELL FARMS PKWY STE 120, SAN ANTONIO, TX 78218(210) 982-6886(833) 764-5459 Get Directions Write a Review

NPPES record last updated: January 20, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jan 20, 2026, Dec 18, 2024 (2 updates tracked since 2024).

About Walter Walthall Md NPPES

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

WALTER WALTHALL MD (NPI 1750460317) is an individual family medicine provider in San Antonio, Texas, licensed in Texas (L0956) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS, holds a CLIA Waiver certificate valid through November 19, 2027, and is affiliated with Baptist Medical Center.

NPPES Registry Identity

NPI1750460317
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameWALTER WALTHALLCredential: MD
Location Address1919 OAKWELL FARMS PKWY STE 120San Antonio, TX 78218-1778
Mailing Address1919 Oakwell Farms Pkwy Ste 120San Antonio, TX 78218-1778 · (210) 982-6886 · Fax (833) 764-5459
Phone(210) 982-6886
Fax(833) 764-5459
Sole ProprietorYes
Medical School CMSUniversity Of Texas Medical School At HoustonGraduated 1997
Enumeration DateNovember 3, 2006
Last NPPES UpdateJanuary 20, 20262 updates tracked since enumeration
NPPES CertifiedJanuary 20, 2026
✔ NPI 1750460317 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in TX · L0956
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
1919 OAKWELL FARMS PKWY STE 120, San Antonio, TX 78218
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Other Identifiers 1

Medicaid142170302TX

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and more.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

Walter Walthall 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 ID8224016308
PECOS Enrollment IDI20040713001622
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.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 45D2334413

Walter Walthall IV MD · San Antonio, TX
Active · expires Nov 19, 2027
CLIA Number45D2334413
Laboratory TypePhysician Office
Certificate Effective DateNovember 20, 2025
Certificate Expiration DateNovember 19, 2027
Laboratory DirectorWalter Walthall
Laboratory Phone(210) 336-4070
Laboratory LocationWalter Walthall IV MD1919 Oakwill Farms Pkwy Suite 120, San Antonio, TX 78218
CLIA data matches this NPI record on: Name
This certificate is issued to a laboratory to perform only waived tests.

Areas of Expertise CMS Part B claims 15

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
432 services243 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
331 services227 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
289 services289 patients
Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301
Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.
182 services25 patients
Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month 99490
Chronic care management services involve a healthcare professional directing clinical staff in managing your chronic conditions. This includes the first 20 minutes per month of services like medication management, care coordination, and health monitoring to help improve your health and quality of life.
163 services45 patients
Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
94 services94 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Baptist Medical Center

Acute Care Hospitals · San Antonio, TX
4/5 CMS rating
OwnershipProprietary
CMS Certification Number450058
Location111 Dallas StreetSan Antonio, TX 78205 · Bexar County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78218 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.

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.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
9 suppliers26 claims49 services$6.08 avg. paid by Medicare
Tubing with integrated heating element for use with positive airway pressure device A4604
DME-Other DME · category DE001N
3 suppliers24 claims24 services$29.30 avg. paid by Medicare
Alginate or other fiber gelling dressing, wound cover, sterile, pad size more than 16 sq. in. but less than or equal to 48 sq. in., each dressing A6197
DME-Medical/Surgical Supplies · category DA023N
1 supplier12 claims332 services$15.72 avg. paid by Medicare
Full face mask used with positive airway pressure device, each A7030
DME-Other DME · category DE001N
3 suppliers13 claims13 services$71.65 avg. paid by Medicare
Face mask interface, replacement for full face mask, each A7031
DME-Other DME · category DE001N
3 suppliers17 claims32 services$25.21 avg. paid by Medicare
Cushion for use on nasal mask interface, replacement only, each A7032
DME-Other DME · category DE001N
3 suppliers14 claims60 services$15.31 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

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

WALTER WALTHALL IV MD PLLC
Family Medicine
1919 OAKWELL FARMS PKWY STE 120
SAN ANTONIO, TX 78218
Bexar County (210) 982-6886

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 Walter Walthall's NPI number?

The NPI number for Walter Walthall is 1750460317. It was assigned to this individual provider in the NPPES registry on November 3, 2006.

Where is Walter Walthall located?

Walter Walthall practices at 1919 Oakwell Farms Pkwy Ste 120, San Antonio, TX 78218. The listed phone number is (210) 982-6886.

What is Walter Walthall's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Walter Walthall enrolled in Medicare?

Yes. Walter Walthall 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.

Does Walter Walthall hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 45D2334413) is associated with this NPI, valid through November 19, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Walter Walthall accept?

Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 5 other insurers list Walter Walthall 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 Walter Walthall affiliated with any hospitals?

According to CMS data, Walter Walthall is affiliated with Baptist Medical Center.

When was this NPI record last updated?

The NPPES record for Walter Walthall was last updated on January 20, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.