Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

David G Gratton, DDS

Individual provider Prosthodontics · NPI 1962506667

David G Gratton, DDS practises Oral Surgery in Iowa City, Iowa. Graduated from University of Michigan School of Dentistry in 1994, 32 years ago. Practices with State University of Iowa, a 1,885-clinician group and accepts Medicare assignment. Licensed in Iowa.

Years since qualifying
32
Trained at
University of Michigan School of Dentistry
Licensed in
IA
In the registry since
2006
What do these letters mean?
DDS — Doctor of Dental Surgery
A dentist. DDS and DMD are the same qualification — universities choose which title to award.

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Practice location Address checks out

322 S Dental Science Bldg
Iowa City, IA 52242-1001 Not confirmed with CMS for 19 years — call before visiting
Phone: (319) 335-7440
Fax: (319) 335-7451
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Prosthodontics (primary) Taxonomy 1223P0700X · Licence 40059 (IA)

Record details

NPI number1962506667
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS
Sole proprietorNo
NPI enumeratedSeptember 12, 2006
Last updated in NPPESJuly 8, 2007

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyORAL SURGERY
Medical schoolUNIVERSITY OF MICHIGAN SCHOOL OF DENTISTRY
Graduated 1994 (32 years in practice)
Group practice State University Of Iowa — 1885 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients50
Services billed 91 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Honoraria $5,000 1 payment
Travel and Lodging $150 1 payment · travel or lodging paid or reimbursed, such as to attend a conference
Food and Beverage $90 2 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at State University of Iowa

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1885 clinicians in the practice; 12 are shown here.

Other providers in Iowa City