NPPES file of Aug 9, 2026

Garth Kellogg Summers, DO

Obstetrics & Gynecology Physician · Oskaloosa, IA

Garth Kellogg Summers, DO is an obstetrics & gynecology physician with a practice address in Oskaloosa, Iowa, and NPI 1659891687, issued on Jun 21, 2017. Check the license (Iowa DO-05809, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1659891687
Name
Garth Kellogg Summers
Credential
DO
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
DO-05809 IA
Self-reported in NPPES; status is on the state search
Practice location
1229 C Ave E, Oskaloosa, IA 52577
Phone
(641) 676-7401
Enumerated
Jun 21, 2017
Record last updated
Aug 27, 2024
Fax
(641) 676-7325
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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Also registered at 1229 C Ave E

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

  1. John Agan, RPHPharmacotherapy Pharmacist1205049772
  2. Jessica Aguilera, DOFamily Medicine Physician1184316994
  3. Amanda Ballanger, RNRegistered Nurse1659025534
  4. Lisa Bard, LMHCCounselor1629176458
  5. Christine BeairdFamily Nurse Practitioner1063768646
  6. Mark Beers, DPMPodiatrist1164413209

Verify Garth Kellogg Summers in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIowa Board of Medicine
    Search for license DO-05809
    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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6% more Medicare Part D claims than the average obstetrics & gynecology physician in 2024

175 Medicare Part D claims for 47 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.

  1. Garth Summers175
  2. Specialty average165

Most prescribed

  1. Veozah21 claims
  2. Estradiol20 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $79.11

3 payments; by number, the most common kind was food and beverage; the largest payer was Intuitive Surgical, Inc. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Garth Summers$79.11
  2. Specialty average$1,030.61

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Garth Kellogg Summers among 339 obstetrics & gynecology physician records in Iowa

Garth Kellogg Summers, DO is one of 339 obstetrics & gynecology physician records with a practice address in Iowa. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 81% of them.

  • NPI issued2017 · 81% of these records are older, 17% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileNo · 55% of these records are
  • Record last updated2024 · 56% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Obstetrics & Gynecology Physician providers in Iowa

There are 339 obstetrics & gynecology physician records in Iowa.

The 8 obstetrics & gynecology physician records with the nearest ZIP codes

  1. Taylar Swartz Summers, DOOskaloosa, IA 525771770078297
  2. Gary Lee, D.O.Keosauqua, IA 525651699853390
  3. Cristina Andia Rabo, MDFt Madison, IA 526271700856374
  4. Richard Goddard, M.D.Fort Madison, IA 526271174563332
  5. Lourdes Marquez, MDFt Madison, IA 526271437124765
  6. Timothy Staudte, D.O.Fort Madison, IA 526271114990660
  7. Leah Steffensmeier, M.D.Fort Madison, IA 526271033174628
  8. Robert Smith, M.D.Mt Pleasant, IA 526411710952833

Common questions

What is Garth Kellogg Summers, DO's NPI number?

Garth Kellogg Summers, DO's National Provider Identifier (NPI) is 1659891687, issued on Jun 21, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Garth Kellogg Summers, DO located?

The NPPES record lists a practice address at 1229 C Ave E, Oskaloosa, IA, 52577. Phone: (641) 676-7401. Providers update this record themselves, so call before visiting.

How can I verify Garth Kellogg Summers, DO's license?

NPPES lists Iowa license number DO-05809, 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.

How much does Garth Kellogg Summers, DO prescribe under Medicare Part D?

In 2024, Garth Kellogg Summers, DO had 175 Medicare Part D claims for 47 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.

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

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.