DR. MARGARET GREER WHISENANT M.D.
NPI 1811094733
Internal Medicine in San Marcos, TX

Q: What is Margaret Whisenant's NPI number?

The NPI number for Margaret Whisenant is 1811094733. It was assigned to this individual provider in the NPPES registry on September 20, 2006. The provider is also known as Dr. Gretchen Whisenant M.D..

Q: What is Margaret Whisenant's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Active since September 20, 2006PECOS Enrolled

601 UNIVERSITY DR, STUDENT HEALTH CENTER, SAN MARCOS, TX 78666(512) 245-2161(512) 245-9288 Get Directions Write a Review

NPPES record last updated: May 16, 2013. Verified against the NPPES registry weekly; last sync: August 30, 2026.

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About Dr. Margaret Greer Whisenant M.d. NPPES

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

DR. MARGARET GREER WHISENANT M.D. (NPI 1811094733) is an individual internal medicine provider in San Marcos, Texas, licensed in Texas (G3904) and active in the NPI registry since September 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1811094733

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameDR. MARGARET GREER WHISENANTCredential: M.D.

Location Address601 UNIVERSITY DR, STUDENT HEALTH CENTERSan Marcos, TX 78666-4684

Mailing Address601 University Dr, Student Health CenterSan Marcos, TX 78666-4684 · (512) 245-2161 · Fax (512) 245-9288

Phone(512) 245-2161

Fax(512) 245-9288

Sole ProprietorNo

Enumeration DateSeptember 20, 2006

Last NPPES UpdateMay 16, 2013

✔ NPI 1811094733 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in TX · G3904

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

601 UNIVERSITY DR, San Marcos, TX 78666

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Other Names 1

Other Name (5)Dr. Gretchen Whisenant M.d.

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. Margaret Greer Whisenant 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78666 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.

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.

NICOLE MARIE SANDOVAL BS

Specialist/Technologist (Athletic Trainer)