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GREGORY JAMES ZIOMEK
NPI 1356908776
Psychiatry & Neurology - Psychiatry in Austin, TX

Active since May 21, 2019PECOS EnrolledAccepts Medicare Assignment
3501 MILLS AVE FL 6, AUSTIN, TX 78731(512) 324-2000 Get Directions Write a Review

NPPES record last updated: June 1, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jun 1, 2026, Apr 15, 2026, Aug 28, 2023 and 1 more (4 updates tracked since 2019).

About Gregory James Ziomek NPPES

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

GREGORY JAMES ZIOMEK (NPI 1356908776) is an individual psychiatry provider in Austin, Texas, licensed in New Mexico (MD2026-0164) and active in the NPI registry since May 2019. He is enrolled in Medicare PECOS, is affiliated with Unm Hospital, and maintains a secondary practice location in Albuquerque.

NPPES Registry Identity

NPI1356908776
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameGREGORY JAMES ZIOMEK
Location Address3501 MILLS AVE FL 6Austin, TX 78731-6309
Mailing Address800 Bradbury Dr Se Ste 116Albuquerque, NM 87106-4310
Phone(512) 324-2000
Sole ProprietorNo
Medical School CMSOtherGraduated 2019
Enumeration DateMay 21, 2019
Last NPPES UpdateJune 1, 20264 updates tracked since enumeration
NPPES CertifiedJune 1, 2026
✔ NPI 1356908776 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in NM · MD2026-0164
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
Also ListedPsychiatry & Neurology · Psychosomatic MedicineTaxonomy 2084P0015X · License U0462 (TX)
3501 MILLS AVE FL 6, Austin, TX 78731
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Secondary Practice Location 1

Location 11 University Of New MexicoAlbuquerque, NM 87131-0001 · Phone (505) 272-2237

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, Cigna Healthcare, Harbor Health and more.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

Gregory James Ziomek 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 ID7416304407
PECOS Enrollment IDI20231113003475, I20260609000992
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 Gregory Ziomek reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Tri-County Clinical
Same address
Cardiovascular Disease
3501 MILLS AVE
Austin, TX 78731
  • Reassigned Medicare billing, Texas enrollment
  • 136 clinicians in this Medicare group
NPI 1588971477 (512) 324-2000
Unm Medical Group Inc
612 mi
Multi-Specialty
2211 LOMAS NE
Albuquerque, NM 87106
  • Reassigned Medicare billing, New Mexico enrollment
  • 2,105 clinicians in this Medicare group
NPI 1831218627 (505) 272-3303

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

Areas of Expertise CMS Part B claims 2

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
107 services36 patients
Psychiatric diagnostic evaluation with medical services 90792
A psychiatric diagnostic evaluation with medical services is a comprehensive assessment. It includes a detailed examination of your mental health and physical wellbeing, as well as your personal and family history. This evaluation aids in creating an effective treatment plan.
13 services13 patients

Hospital Affiliations CMS Care Compare 3

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

Unm Hospital

Acute Care Hospitals · Albuquerque, NM
2/5 CMS rating
OwnershipGovernment - State
CMS Certification Number320001
Location2211 Lomas Boulevard NEAlbuquerque, NM 87106 · Bernalillo County
Emergency services Birthing friendly

Ascension Seton Medical Center Austin

Acute Care Hospitals · Austin, TX
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number450056
Location1201 W 38th StAustin, TX 78705 · Travis County
Emergency services Birthing friendly

Dell Seton Med Center At The University Of Tx

Acute Care Hospitals · Austin, TX
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number450124
Location601 E 15th StreetAustin, TX 78701 · Travis County

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78731 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
$174.00 typical visit price
range $57.88 – $174.00
Typical copayment $43.50 (range $14.47 – $43.50)
Most-billed visit code 99205
Established Patient
$71.95 typical visit price
range $18.88 – $142.23
Typical copayment $17.98 (range $4.72 – $35.55)
Most-billed visit code 99213
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 5

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

DR. ROBERT TRACY ESTERQUEST MD
Psychiatry & Neurology (Psychiatry)
3501 MILLS AVE FL 6
AUSTIN, TX 78731
Travis County (847) 217-9961
BRIAN EDWARD DONLEY
Psychiatry & Neurology (Psychiatry)
3501 MILLS AVE FL 6
AUSTIN, TX 78731
Travis County (512) 324-2036
ZOBIA CHUNARA
Psychiatry & Neurology (Psychiatry)
3501 MILLS AVE FL 6
AUSTIN, TX 78731
Travis County (512) 324-2000
DR. JONATHAN DAVID ARTZ MD
Psychiatry & Neurology (Psychiatry)
3501 MILLS AVE FL 6
AUSTIN, TX 78731
Travis County (512) 324-2000
NATASHA GAMBHIR
Psychiatry & Neurology (Addiction Psychiatry)
3501 MILLS AVE FL 6
AUSTIN, TX 78731
Travis County (512) 324-2036

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 Ziomek's NPI number?

The NPI number for Gregory Ziomek is 1356908776. It was assigned to this individual provider in the NPPES registry on May 21, 2019.

Where is Gregory Ziomek located?

Gregory Ziomek practices at 3501 Mills Ave Fl 6, Austin, TX 78731. The listed phone number is (512) 324-2000.

What is Gregory Ziomek's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Gregory Ziomek enrolled in Medicare?

Yes. Gregory Ziomek 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 Gregory Ziomek's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Ziomek reassigns Medicare benefits to 2 organizations: Tri-County Clinical (Austin, TX) and Unm Medical Group Inc (Albuquerque, NM). 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 Gregory Ziomek's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gregory Ziomek accept?

Health plans from Blue Cross and Blue Shield of Texas, Cigna Healthcare, Harbor Health and Sendero Health Plans, Local Nonprofit list Gregory Ziomek 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 Ziomek affiliated with any hospitals?

According to CMS data, Gregory Ziomek is affiliated with Unm Hospital, Ascension Seton Medical Center Austin and Dell Seton Med Center At The University Of Tx.

When was this NPI record last updated?

The NPPES record for Gregory Ziomek was last updated on June 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.