Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. GREGORY LYNN HATTAN D.D.S.
NPI 1669474664
Dentist in Concordia, KS

Q: What is Gregory Hattan's NPI number?

The NPI number for Gregory Hattan is 1669474664. It was assigned to this individual provider in the NPPES registry on August 10, 2005.

Q: What is Gregory Hattan's specialty?

The primary specialty registered for this NPI is Dentist with taxonomy code 122300000X.

Q: When was this NPI record last updated?

The NPPES record for Gregory Hattan was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 32 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.

Active since August 10, 2005PECOS Enrolled

501 WASHINGTON ST, CONCORDIA, KS 66901(785) 243-7927(785) 243-1208 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

On this page

About Dr. Gregory Lynn Hattan D.d.s. NPPES

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

DR. GREGORY LYNN HATTAN D.D.S. (NPI 1669474664) is an individual dentist in Concordia, Kansas, licensed in Kansas (KS5378) and active in the NPI registry since August 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1669474664

Entity TypeIndividualMale

Primary Taxonomy122300000X

Provider Legal NameDR. GREGORY LYNN HATTANCredential: D.D.S.

Location Address501 WASHINGTON STConcordia, KS 66901-2116

Mailing Address501 Washington StConcordia, KS 66901-2116 · (785) 243-7927 · Fax (785) 243-1208

Phone(785) 243-7927

Fax(785) 243-1208

Sole ProprietorNo

Enumeration DateAugust 10, 2005

Last NPPES UpdateJuly 13, 2026

✔ NPI 1669474664 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentistDental Providers

Taxonomy Code122300000X

License✔ Licensed in KS · KS5378

Definition

A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist.

501 WASHINGTON ST, Concordia, KS 66901

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Home State Health, Ambetter from Sunflower Health Plan, Ambetter Health 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 (PECOS)

Dr. Gregory Lynn Hattan D.d.s. 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 66901 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

$81.98 typical visit price

range $53.00 – $161.67

Typical copayment $20.49 (range $13.25 – $40.41)

Most-billed visit code 99203

Established Patient

$66.40 typical visit price

range $16.88 – $132.11

Typical copayment $16.60 (range $4.22 – $33.02)

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.

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 Hattan's NPI number?

The NPI number for Gregory Hattan is 1669474664. It was assigned to this individual provider in the NPPES registry on August 10, 2005.

Where is Gregory Hattan located?

Gregory Hattan practices at 501 Washington St, Concordia, KS 66901. The listed phone number is (785) 243-7927.

What is Gregory Hattan's specialty?

The primary specialty registered for this NPI is Dentist with taxonomy code 122300000X.

Is Gregory Hattan enrolled in Medicare?

Yes. Gregory Hattan is registered in the Medicare PECOS enrollment system.

What insurance does Gregory Hattan accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Home State Health, Ambetter from Sunflower Health Plan and Ambetter of Oklahoma and 13 other insurers list Gregory Hattan 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 Gregory Hattan was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 32 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.