NPPES file of Aug 9, 2026

Gregory James Clark, MD

Internal Medicine Physician · Ankeny, IA

Gregory James Clark, MD is an internal medicine physician with a practice address in Ankeny, Iowa, and NPI 1386730836, issued on Oct 4, 2006. Check the license (Iowa MD-43163, as entered in NPPES) on the Iowa Board of Medicine; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1386730836
Name
Gregory James Clark
Credential
MD
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
MD-43163 IA
Self-reported in NPPES; status is on the state search
Practice location
800 E 1St St Ste 1700, Ankeny, IA 50021
Phone
(515) 643-8100
Enumerated
Oct 4, 2006
Record last updated
Jul 21, 2022
Fax
(515) 643-8139
Medicaid IDs
1942185 IA
101225800 MN
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest internal medicine physician records → All 871 in Iowa → Look up another NPI →

Also registered at 800 E 1St St Ste 1700

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Laura Abels, DOFamily Medicine Physician1427313527
  2. Sarah Clark, ARNP, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1598521098
  3. Dominick Ervelli, D.O.Internal Medicine Physician1871572990
  4. Laura Eslinger, ARNPAdult Health Nurse Practitioner1760840243
  5. George Gura, DOInternal Medicine Physician1194165639
  6. Madison Mealey, PA-CPhysician Assistant1821798729

Verify Gregory James Clark in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIowa Board of Medicine
    Search for license MD-43163    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Iowa license search

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Gregory James Clark among 871 internal medicine physician records in Iowa

Gregory James Clark, MD is one of 871 internal medicine physician records with a practice address in Iowa. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 11% of them.

  • NPI issued2006 · 11% of these records are older, 62% newer
  • In a Medicare fileNo · 70% of these records are
  • In the CMS Doctors and Clinicians fileNo · 44% of these records are
  • Record last updated2022 · 46% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

16 internal medicine physician records list a practice address in Ankeny

They are 16 of the 1,198 NPPES records with a practice address in Ankeny, and 871 internal medicine physician records in Iowa. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 871 in Iowa → Every provider in Ankeny → Internal Medicine Physician nationwide →

The 8 internal medicine physician records with the nearest ZIP codes

  1. Dominick Ervelli, D.O.Ankeny, IA 500211871572990
  2. George Gura, DOAnkeny, IA 500211194165639
  3. Shika Mukkamala, DOAnkeny, IA 500211609304245
  4. Taylor Sanders, DOAnkeny, IA 500211134795172
  5. Amna Tanweer, DOAnkeny, IA 500211285201566
  6. William Wortman, MDAnkeny, IA 500211912293598
  7. Danney Drewry, D.OAnkeny, IA 500231811162779
  8. Kathleen Gannon, D.O.Ankeny, IA 500231922066331

Common questions

What is Gregory James Clark, MD's NPI number?

Gregory James Clark, MD's National Provider Identifier (NPI) is 1386730836, issued on Oct 4, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Gregory James Clark, MD located?

The NPPES record lists a practice address at 800 E 1St St Ste 1700, Ankeny, IA, 50021. Phone: (515) 643-8100. Providers update this record themselves, so call before visiting.

How can I verify Gregory James Clark, MD's license?

NPPES lists Iowa license number MD-43163, as entered by the provider. Search the Iowa Board of Medicine at https://dial.iowa.gov/about-dial/boards-and-commissions/medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.