Grant William Clark
Physician Assistant β’ Waterloo, IA
1825 Logan Ave
Waterloo, IA 507031916
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
Practice Location & Contact Primary Location
1825 Logan Ave
Waterloo, IA 507031916
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2021β2025.
NPI first issued
2025
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians, CMS release of October 2, 2026; Medicare.gov, βDoes your provider accept Medicare as full payment?β
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians, CMS release of October 2, 2026.
Can order Medicare-covered services
CMS lists Grant Clark as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Waterloo and Iowa
31 active clinicians are listed under Physician Assistant with a practice address in Waterloo, IA (1,547 in Iowa).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Waterloo
3.2% of these 31 clinicians have the CMS telehealth indicator.
58.1% of these 31 clinicians are listed by CMS as accepting Medicare assignment.
Sources: CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo Β· Report an error.
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2026-09-23NUCC Taxonomy Code: 363A00000X
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.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSSources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Nurse Practitioner
Advanced Registered Nurse Practitioner
Emergency Medicine
Doctor of Osteopathic Medicine (D.O.)
Emergency Medicine
Doctor of Osteopathic Medicine (D.O.)
Hospitalist
Doctor of Medicine (M.D.)
Physical Therapist
Doctor of Physical Therapy, Certified Athletic Trainer
Emergency Medicine
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 1825 LOGAN AVE, WATERLOO, IA 507031916 (Tel: 3192353941)
Physician Assistant (license number reported to NPPES: IA 141166)
NPI status registered as active in NPPES database
Registered at 8025 GRAND AVE, WEST DES MOINES, IA 502665360 (Tel: 5152711569)
Registered at 4834 VALLEY VIEW LN, WEST DES MOINES, IA 502655226 (Tel: 5155375551)
Recorded as GRANT CLARK
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Physician Assistants in Waterloo
- Michelle Nepple, PA-C
- Shanon Bennett, PA-C
- Robert Welshons, PA-C
- Steven Henning, PA-C
- Rebecca Chittenden, PA
- Lyndsie Lujan, PA-C
Mailing Address
4834 Valley View Ln
West Des Moines, IA 502655226
Phone: 5155375551