GREG HAYES II MD
NPI 1700852860
Family Medicine in Dallas, TX

Q: What is Greg Hayes's NPI number?

The NPI number for Greg Hayes is 1700852860. It was assigned to this individual provider in the NPPES registry on February 27, 2006.

Q: What is Greg Hayes's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Greg Hayes was last updated on March 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.

Active since February 27, 2006PECOS EnrolledAccepts Medicare Assignment

5331 E MOCKINGBIRD LN STE 100, DALLAS, TX 75206(888) 663-6331(415) 252-7176 Get Directions Write a Review

NPPES record last updated: March 17, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Mar 17, 2025, Mar 12, 2025, Oct 4, 2024 and 1 more (4 updates tracked since 2022).

On this page

About Greg Hayes Ii Md NPPES

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

GREG HAYES II MD (NPI 1700852860) is an individual family medicine provider in Dallas, Texas, licensed in Texas (S0901) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of University Of Texas Medical Branch At Galveston (1993).

NPPES Registry Identity

NPI1700852860

Entity TypeIndividualMale

Primary Taxonomy207Q00000X

Provider Legal NameGREG HAYES IICredential: MD

Location Address5331 E MOCKINGBIRD LN STE 100Dallas, TX 75206-5132

Mailing Address1 Embarcadero Ctr Ste 1900San Francisco, CA 94111-3723 · (415) 658-6791

Phone(888) 663-6331

Fax(415) 252-7176

Sole ProprietorNo

Medical School CMSUniversity Of Texas Medical Branch At GalvestonGraduated 1993

Enumeration DateFebruary 27, 2006

Last NPPES UpdateMarch 17, 20254 updates tracked since enumeration

NPPES CertifiedMarch 17, 2025

✔ NPI 1700852860 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207Q00000X

Licenses✔ Licensed in TX · S0901✔ Licensed in IA · 30015

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.

5331 E MOCKINGBIRD LN STE 100, Dallas, TX 75206

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Secondary Practice Locations 2

Location 15926 W Northwest HwyDallas, TX 75225-3202 · Phone (888) 663-6331

Location 22973 W 7th StFort Worth, TX 76107-2221 · Phone (888) 663-6331

Other Identifiers 1

Medicaid4097238IA

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, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Greg Hayes Ii 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 ID9133255920

PECOS Enrollment IDI20191205002881

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

Medicare enrollment records show Greg Hayes reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Healthtexas Provider Network

1.0 mi

Family Medicine

5926 W NORTHWEST HWY
Dallas, TX 75225

Reassigned Medicare billing, Texas enrollment
3,167 clinicians in this Medicare group

NPI 1962153940 (888) 663-6331

Seton Family Of Doctors

177 mi

Family Medicine

3001 PALM WAY, D1 : 134-138
Austin, TX 78758

Reassigned Medicare billing, Texas enrollment
1,188 clinicians in this Medicare group

NPI 1225644065 (512) 324-5938

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 75206 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

$88.19 typical visit price

range $57.18 – $172.86

Typical copayment $22.04 (range $14.29 – $43.21)

Most-billed visit code 99203

Established Patient

$100.80 typical visit price

range $18.48 – $141.20

Typical copayment $25.20 (range $4.62 – $35.30)

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

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

MRS. ABBEY JOHNSON FNP

Nurse Practitioner (Family)

5331 E MOCKINGBIRD LN STE 100
DALLAS, TX 75206

Dallas County (888) 663-6331

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 Greg Hayes's NPI number?

The NPI number for Greg Hayes is 1700852860. It was assigned to this individual provider in the NPPES registry on February 27, 2006.

Where is Greg Hayes located?

Greg Hayes practices at 5331 E Mockingbird Ln Ste 100, Dallas, TX 75206. The listed phone number is (888) 663-6331.

What is Greg Hayes's specialty?

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

Is Greg Hayes enrolled in Medicare?

Yes. Greg Hayes 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 Greg Hayes's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Greg Hayes reassigns Medicare benefits to 2 organizations: Healthtexas Provider Network (Dallas, TX) and Seton Family Of Doctors (Austin, TX). 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 Greg Hayes's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Greg Hayes 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 2 other insurers list Greg Hayes 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 Greg Hayes was last updated on March 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.