NPPES file of Aug 9, 2026

Sandra Guzmon-Armstrong, DDS MS

General Practice Dentistry · Iowa City, IA

Sandra Guzmon-Armstrong, DDS MS is a general practice dentistry with a practice address in Iowa City, Iowa, and NPI 1386748036, issued on Sep 12, 2006. Check the license (Iowa 40056, as entered in NPPES) with the Iowa board that licenses this profession; 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
1386748036
Name
Sandra Guzmon-Armstrong
Credential
DDS MS
Primary taxonomy
General Practice Dentistry 1223G0001X
License number
40056 IA
Self-reported in NPPES; status is on the state search
Practice location
322 S Dental Science Bldg, Iowa City, IA 52242
Phone
(319) 335-7440
Enumerated
Sep 12, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(319) 335-7451
Medicaid ID
0239368 IA
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 322 S Dental Science Bldg

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

  1. Steven Aquilino, DDS MSProsthodontics1780788786
  2. Steven Armstrong, DDS PHDGeneral Practice Dentistry1598869505
  3. Marie Eve Asselin, DMD MSC FRCDCOral and Maxillofacial Pathology Dentistry1275732968
  4. Murray Bouschlicher, DDSDentist1750485769
  5. John Casko, DDS MA PHDOrthodontics and Dentofacial Orthopedics Dentistry1538263538
  6. Yvonne Chalkley, DDSGeneral Practice Dentistry1083718084

Verify Sandra Guzmon-Armstrong in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Iowa board licenses this profession
    Search for license 40056    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
Find the Iowa license search

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81% fewer Medicare Part D claims than the average general practice dentistry in 2024

16 Medicare Part D claims, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D.

  1. Sandra Guzmon-Armstrong16
  2. Specialty average83

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: $15.36

1 payment: food and beverage; the largest payer was Dentsply Sirona Inc. The 41,669 providers of this specialty with any payment received $597.01 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Sandra Guzmon-Armstrong$15.36
  2. Specialty average$597.01

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

100 general practice dentistry records list a practice address in Iowa City

They are 100 of the 7,163 NPPES records with a practice address in Iowa City, and 1,239 general practice dentistry records in Iowa.

All 100 in Iowa City → All 1,239 in Iowa → Every provider in Iowa City →

Other general practice dentistry records in Iowa

  1. Deborah Adamec, D.D.S.Iowa City, IA1962624882
  2. Ken Addink, DDSSioux Center, IA1851372940
  3. Eric Adler, DDSSolon, IA1467025106
  4. Martin AhrensManning, IA1104030014
  5. Vinti Ahuja, DMDBettendorf, IA1992275358
  6. Jeffrey AkeyCedar Rapids, IA1598798886
  7. Ala'a Al Arabi, D.D.SWaterloo, IA1477969608
  8. Christopher Aldrich, DDSWaterloo, IA1073956454
  9. Ahmad Alkhazaleh, BDSIowa City, IA1528612827
  10. Jeffrey Allen, DDSPella, IA1841373289

Common questions

What is Sandra Guzmon-Armstrong, DDS MS's NPI number?

Sandra Guzmon-Armstrong, DDS MS's National Provider Identifier (NPI) is 1386748036, issued on Sep 12, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Sandra Guzmon-Armstrong, DDS MS located?

The NPPES record lists a practice address at 322 S Dental Science Bldg, Iowa City, IA, 52242. Phone: (319) 335-7440. Providers update this record themselves, so call before visiting.

How can I verify Sandra Guzmon-Armstrong, DDS MS's license?

NPPES lists Iowa license number 40056, as entered by the provider. Search the Iowa board that licenses this profession; the NPPES record confirms identity only.

How much does Sandra Guzmon-Armstrong, DDS MS prescribe under Medicare Part D?

In 2024, Sandra Guzmon-Armstrong, DDS MS had 16 Medicare Part D claims; the average among general practice dentistry prescribers was 83. 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.