NPPES file of Aug 9, 2026

George David Nacos, M.D.

Family Medicine Physician · Washington, IA

George David Nacos, M.D. is a family medicine physician with a practice address in Washington, Iowa, and NPI 1235159716, issued on Jul 20, 2006. Check the license (Iowa 29699, 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
1235159716
Name
George David Nacos
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
29699 IA
Self-reported in NPPES; status is on the state search
Practice location
1230 S Iowa Ave, Washington, IA 52353
Phone
(319) 653-7291
Enumerated
Jul 20, 2006
Record last updated
May 6, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(319) 653-7440
Medicaid ID
4118174 IA
Medicare enrollment
Enrolled (PECOS I20090128000067); accepts Medicare assignment
Medical or professional school
University Of Iowa, Rj & L Carver College Of Medicine, 1992
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest family medicine physician records → All 2,336 in Iowa → Look up another NPI →

Also registered at 1230 S Iowa Ave

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

  1. Tyler Bayliss, MSN, RN, FNP-CFamily Nurse Practitioner1629753108
  2. Ryan Flannery, M.D.Family Medicine Physician1114981396
  3. Debbie Gibbs, M.D.Family Medicine Physician1902863558
  4. Amanda Kleese, ARNPNurse Practitioner1659364776
  5. Trevor Martin, D.O.Family Medicine Physician1770725202
  6. Matthew Prihoda, M.D.Family Medicine Physician1184663684

Verify George David Nacos in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIowa Board of Medicine
    Search for license 29699    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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3.8 times the Medicare Part D claims of the average family medicine physician in 2024

13,525 Medicare Part D claims for 635 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 280 claims were for opioids.

  1. George Nacos13,525
  2. Specialty average3,544

Most prescribed

  1. Levothyroxine Sodium839 claims
  2. Atorvastatin Calcium681 claims
  3. Amlodipine Besylate474 claims
  4. Lisinopril407 claims
  5. Pantoprazole Sodium335 claims
  6. Furosemide334 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.

Bills Medicare through 2 group practices

  1. Progressive Rehabilitation Associates LLCIowa City, IA
  2. Washington County HospitalWashington, IA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

George David Nacos among 2,336 family medicine physician records in Iowa

George David Nacos, M.D. is one of 2,336 family medicine physician records with a practice address in Iowa. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 16% of them.

  • NPI issued2006 · 16% of these records are older, 48% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 59% of these records are
  • Graduated1992 · median 2006 among the 1,367 with a school on file
  • Record last updated2014 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

10 family medicine physician records list a practice address in Washington

They are 10 of the 131 NPPES records with a practice address in Washington, and 2,336 family medicine physician records in Iowa.

All 2,336 in Iowa → Every provider in Washington → Family Medicine Physician nationwide →

The 8 family medicine physician records with the nearest ZIP codes

  1. Ryan Flannery, M.D.Washington, IA 523531114981396
  2. Debbie Gibbs, M.D.Washington, IA 523531902863558
  3. Daisy Hanshaw, MDWashington, IA 523531952979239
  4. Lynette Iles, M.D.Washington, IA 523531003883372
  5. Trevor Martin, D.O.Washington, IA 523531770725202
  6. Robin Plattenberger-Gilmore, DOWashington, IA 523531679566293
  7. Matthew Prihoda, M.D.Washington, IA 523531184663684
  8. James Schlichtmann, M.D.Washington, IA 523531104868348

Common questions

What is George David Nacos, M.D.'s NPI number?

George David Nacos, M.D.'s National Provider Identifier (NPI) is 1235159716, issued on Jul 20, 2006. An NPI identifies a provider in billing; it is not a license.

Where is George David Nacos, M.D. located?

The NPPES record lists a practice address at 1230 S Iowa Ave, Washington, IA, 52353. Phone: (319) 653-7291. Providers update this record themselves, so call before visiting.

How can I verify George David Nacos, M.D.'s license?

NPPES lists Iowa license number 29699, 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 George David Nacos, M.D. prescribe under Medicare Part D?

In 2024, George David Nacos, M.D. had 13,525 Medicare Part D claims for 635 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.

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.