NPPES file of Aug 9, 2026

Ian Richardson, M.D.,

Family Medicine Physician · Chalan Pago, GU

Ian Richardson, M.D., is a family medicine physician with a practice address in Chalan Pago, Guam, and NPI 1790878932, issued on Oct 2, 2006. Check the license (Guam M1238, as entered in NPPES) with the Guam 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
1790878932
Name
Ian Richardson
Credential
M.D.,
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
M1238 GU
Self-reported in NPPES; status is on the state search
Practice location
302 S Route 4 Ste 207, Chalan Pago, GU 96910
Phone
(671) 477-2873
Enumerated
Oct 2, 2006
Record last updated
May 1, 2026
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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Verify Ian Richardson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Guam board licenses this profession
    Search for license M1238
    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
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98% fewer Medicare Part D claims than the average family medicine physician in 2024

64 Medicare Part D claims for 18 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.

  1. Ian Richardson64
  2. Specialty average3,544

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.

Ian Richardson among 46 family medicine physician records in Guam

Ian Richardson, M.D., is one of 46 family medicine physician records with a practice address in Guam. 65% 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 2% of them.

  • NPI issued2006 · 2% of these records are older, 78% newer
  • In a Medicare fileYes · 65% of these records are
  • In the CMS Doctors and Clinicians fileNo · 52% of these records are
  • Record last updated2026 · 37% 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 Guam practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Family Medicine Physician providers in Guam

There are 46 family medicine physician records in Guam.

The 8 family medicine physician records with the nearest ZIP codes

  1. Yosselin Arroyo-Galvan, M.DAgana Heights, GU 969101942864715
  2. Ann Carnevale, MDAgana Heights, GU 969101457009300
  3. Rodger Carter, DOAgana Heights, GU 969101124605951
  4. Elizabeth Conlon, MDAgana Heights, GU 969101134787062
  5. Matthew Edinger, DOAgana Heights, GU 969101740867142
  6. Davina Lujan, M.D.Hagatna, GU 969101003850462
  7. Maria Melissa Samaniego, MDAgana Heights, GU 969101063545002
  8. Amanda Waller, DOAgana Heights, GU 969101346743127

Common questions

What is Ian Richardson, M.D.,'s NPI number?

Ian Richardson, M.D.,'s National Provider Identifier (NPI) is 1790878932, issued on Oct 2, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Ian Richardson, M.D., located?

The NPPES record lists a practice address at 302 S Route 4 Ste 207, Chalan Pago, GU, 96910. Phone: (671) 477-2873. Providers update this record themselves, so call before visiting.

How can I verify Ian Richardson, M.D.,'s license?

NPPES lists Guam license number M1238, as entered by the provider. Search the Guam board that licenses this profession; the NPPES record confirms identity only.

How much does Ian Richardson, M.D., prescribe under Medicare Part D?

In 2024, Ian Richardson, M.D., had 64 Medicare Part D claims for 18 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.

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.