Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. GREGORY MARK WITTENBURG MD
NPI 1689234916
Family Medicine in Austin, TX

Active since June 18, 2019PECOS Enrolled
88.22/100
CMS Quality Rating
2806 REAL ST, AUSTIN, TX 78722(512) 978-8130 Get Directions Write a Review

NPPES record last updated: July 14, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 14, 2026, May 18, 2022, Jun 18, 2019 (3 updates tracked since 2019).

About Dr. Gregory Mark Wittenburg Md NPPES

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

DR. GREGORY MARK WITTENBURG MD (NPI 1689234916) is an individual family medicine provider in Austin, Texas, licensed in Texas (W5205) and active in the NPI registry since June 2019. He is enrolled in Medicare PECOS, is affiliated with Centura St. Catherine Hospital-garden City, and is a graduate of Creighton University School Of Medicine (2019).

NPPES Registry Identity

NPI1689234916
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameDR. GREGORY MARK WITTENBURGCredential: MD
Location Address2806 REAL STAustin, TX 78722-1715
Mailing Address1111 E Cesar Chavez StAustin, TX 78702-4209 · (512) 978-8130
Sole ProprietorNo
Medical School CMSCreighton University School Of MedicineGraduated 2019
Enumeration DateJune 18, 2019
Last NPPES UpdateJuly 14, 20263 updates tracked since enumeration
NPPES CertifiedJuly 14, 2026
NPI 1689234916 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 · W5205
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.
2806 REAL ST, Austin, TX 78722

Other Names 1

Other Name (5)Dr. Greg Wittenburg Md

Accepted 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

Dr. Gregory Mark Wittenburg 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 ID345628707
PECOS Enrollment IDI20220929001773
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.

Areas of Expertise CMS Part B claims 5

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.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
160 services147 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
130 services124 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
77 services61 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
61 services59 patients
Emergency department visit with low level of medical decision making 99283
An emergency department visit for a problem of moderate severity involves immediate medical attention for issues like minor fractures, burns, or high fever. The healthcare team will assess your condition, provide necessary treatment, and may suggest further tests or admission if required.
30 services30 patients

Hospital Affiliations CMS Care Compare 2

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

Centura St. Catherine Hospital-Garden City

Acute Care Hospitals · Garden City, KS
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number170023
Location401 East SpruceGarden City, KS 67846 · Finney County
Emergency services Birthing friendly

Centura St. Catherine-Dodge City

Acute Care Hospitals · Dodge City, KS
2/5 CMS rating
OwnershipProprietary
CMS Certification Number170175
Location3001 Avenue ADodge City, KS 67801 · Ford County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78722 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
$89.03 typical visit price
range $57.88 – $174.00
Typical copayment $22.25 (range $14.47 – $43.50)
Most-billed visit code 99203
Established Patient
$101.65 typical visit price
range $18.88 – $142.23
Typical copayment $25.41 (range $4.72 – $35.55)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

88.22/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality88.96
Promoting Interoperability81
Improvement Activities40

Other Providers at the Same Location NPPES 14

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

Speech-Language Pathologist
2806 REAL ST
AUSTIN, TX 78722
Internal Medicine
2806 REAL ST
AUSTIN, TX 78722
Internal Medicine
2806 REAL ST
AUSTIN, TX 78722
Physical Therapy Assistant
2806 REAL ST
AUSTIN, TX 78722
Skilled Nursing Facility
2806 REAL ST
AUSTIN, TX 78722
Skilled Nursing Facility
2806 REAL ST
AUSTIN, TX 78722
Nurse Practitioner (Adult Health)
2806 REAL ST
AUSTIN, TX 78722
Nurse Practitioner (Acute Care)
2806 REAL ST
AUSTIN, TX 78722

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 Gregory Wittenburg's NPI number?

The NPI number for Gregory Wittenburg is 1689234916. It was assigned to this individual provider in the NPPES registry on June 18, 2019. The provider is also known as Dr. Greg Wittenburg MD.

Where is Gregory Wittenburg located?

Gregory Wittenburg practices at 2806 Real St, Austin, TX 78722. The listed phone number is (512) 978-8130.

What is Gregory Wittenburg's specialty?

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

Is Gregory Wittenburg enrolled in Medicare?

Yes. Gregory Wittenburg 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.

What insurance does Gregory Wittenburg accept?

Health plans from Blue Cross and Blue Shield of Kansas, Inc. list Gregory Wittenburg 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 Gregory Wittenburg affiliated with any hospitals?

According to CMS data, Gregory Wittenburg is affiliated with Centura St. Catherine Hospital-Garden City and Centura St. Catherine-Dodge City.

When was this NPI record last updated?

The NPPES record for Gregory Wittenburg was last updated on July 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 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.