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TATUM ISABELLE GREGSTON
NPI 1447136825
Physician Assistant in Iowa City, IA

Active since August 12, 2025PECOS Enrolled
200 HAWKINS DR, IOWA CITY, IA 52242(319) 356-2750(319) 353-6343 Get Directions Write a Review

NPPES record last updated: May 26, 2026. Verified against the NPPES registry weekly; last sync: August 30, 2026.

Record update history: May 26, 2026, Mar 10, 2026, Aug 12, 2025 (3 updates tracked since 2025).

About Tatum Isabelle Gregston NPPES

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

TATUM ISABELLE GREGSTON (NPI 1447136825) is an individual physician assistant in Iowa City, Iowa and active in the NPI registry since August 2025. She is enrolled in Medicare PECOS, maintains a secondary practice location in Coralville, and is a graduate of Other (2025).

NPPES Registry Identity

NPI1447136825
Entity TypeIndividualFemale
Primary Taxonomy363A00000X
Provider Legal NameTATUM ISABELLE GREGSTON
Location Address200 HAWKINS DRIowa City, IA 52242-1009
Mailing Address200 Hawkins DrIowa City, IA 52242-1009
Phone(319) 356-2750
Fax(319) 353-6343
Sole ProprietorNo
Medical School CMSOtherGraduated 2025
Enumeration DateAugust 12, 2025
Last NPPES UpdateMay 26, 20263 updates tracked since enumeration
NPPES CertifiedMay 26, 2026
✔ NPI 1447136825 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
Definition
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
200 HAWKINS DR, Iowa City, IA 52242
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Secondary Practice Location 1

Location 1105 E 9th StCoralville, IA 52241-2209 · Phone (319) 356-7102 · Fax (319) 353-6343

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Tatum Isabelle Gregston is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID8325519168
PECOS Enrollment IDI20260603000523
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 52242 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
$81.84 typical visit price
range $52.96 – $161.40
Typical copayment $20.46 (range $13.24 – $40.35)
Most-billed visit code 99203
Established Patient
$66.36 typical visit price
range $16.91 – $131.98
Typical copayment $16.59 (range $4.22 – $32.99)
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 20

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

SANGIL LEE M.D.
Emergency Medicine
200 HAWKINS DR
IOWA CITY, IA 52242
Johnson County (319) 356-2233
RAMI G. EL ABIAD M.D.
Internal Medicine (Gastroenterology)
200 HAWKINS DR
IOWA CITY, IA 52242
Johnson County (319) 356-4901
GRERK SUTAMTEWAGUL MD
Internal Medicine (Hematology & Oncology)
200 HAWKINS DR, DEPT OF INTERNAL MEDICINE
IOWA CITY, IA 52242
Johnson County (319) 356-1616
DR. KALEB TANNER VEIT D.O.
Internal Medicine (Critical Care Medicine)
200 HAWKINS DR
IOWA CITY, IA 52242
Johnson County (319) 356-2320
OMAR JABER M.D
Chronic Disease Hospital
200 HAWKINS DR
IOWA CITY, IA 52242
Johnson County (319) 471-8958
JENNIFER MANCUSO MS, CGC
Genetic Counselor, MS
200 HAWKINS DR, 31663 PFP
IOWA CITY, IA 52242
Johnson County (319) 384-7983
ASHLEY KAISER M.D.
Obstetrics & Gynecology
200 HAWKINS DR, DEPT OF OBGYN
IOWA CITY, IA 52242
Johnson County (319) 356-2294
MRS. NANCY JANE MILLICE
Health Educator
200 HAWKINS DR, 0733 JPP
IOWA CITY, IA 52242
Johnson County (319) 356-3825

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 Tatum Gregston's NPI number?

The NPI number for Tatum Gregston is 1447136825. It was assigned to this individual provider in the NPPES registry on August 12, 2025.

Where is Tatum Gregston located?

Tatum Gregston practices at 200 Hawkins Dr, Iowa City, IA 52242. The listed phone number is (319) 356-2750.

What is Tatum Gregston's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is Tatum Gregston enrolled in Medicare?

Yes. Tatum Gregston is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Tatum Gregston was last updated on May 26, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.