Kathryn Mary Guffrey, M.D.
Emergency Medicine Physician · Dededo, GU
Kathryn Mary Guffrey, M.D. is an emergency medicine physician with a practice address in Dededo, Guam, and NPI 1144512252, issued on May 8, 2011. Check the license (Guam M-1990, as entered in NPPES) with the Guam board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kathryn Mary Guffrey
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- M-1990 GU
2014-01513 NC
Self-reported in NPPES; status is on the state search - Practice location
- 113 Route 3, Dededo, GU 96912
- Phone
- (671) 645-5500
- Enumerated
- May 8, 2011
- Record last updated
- Sep 23, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20190109000759); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 29 in Guam → Look up another NPI →
Verify Kathryn Mary Guffrey in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Guam board licenses this profession
Search for license M-1990Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
17% fewer Medicare Part D claims than the average emergency medicine physician in 2024
187 Medicare Part D claims for 144 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 39 claims were for opioids.
Most prescribed
- Cephalexin21 claims
- Oxycodone-Acetaminophen19 claims
- Amoxicillin-Clavulanate Potass16 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
- Southeastern Emergency Physicians LLCSevierville, TN
- Southwest Florida Emergency Management LLCNaples, FL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kathryn Mary Guffrey among 29 emergency medicine physician records in Guam
Kathryn Mary Guffrey, M.D. is one of 29 emergency medicine physician records with a practice address in Guam. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 41% of them.
- NPI issued2011 · 41% of these records are older, 52% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2011 · median 2011 among the 21 with a school on file
- Record last updated2016 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Guam practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
7 emergency medicine physician records list a practice address in Dededo
They are 7 of the 139 NPPES records with a practice address in Dededo, and 29 emergency medicine physician records in Guam.
All 29 in Guam → Every provider in Dededo → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Eric Greenfield, D.OTamuning, GU 969131457558025
- Aaron Johansen, MDOka Tamuning, GU 969131639226863
- James Last, MDOka Tamuning, GU 969131760539472
- Selwyn Mahon, M.D.Tamuning, GU 969131992816169
- Robert MichaudTamuning, GU 969131063615797
- Shawn Reed, MDTamuning, GU 969131518607647
- Angelito Santos, MDTamuning, GU 969131447280680
- Trenton Scheibe, MDTamuning, GU 969131063630606
Common questions
What is Kathryn Mary Guffrey, M.D.'s NPI number?
Kathryn Mary Guffrey, M.D.'s National Provider Identifier (NPI) is 1144512252, issued on May 8, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Kathryn Mary Guffrey, M.D. located?
The NPPES record lists a practice address at 113 Route 3, Dededo, GU, 96912. Phone: (671) 645-5500. Providers update this record themselves, so call before visiting.
How can I verify Kathryn Mary Guffrey, M.D.'s license?
NPPES lists Guam license number M-1990, as entered by the provider. Search the Guam board that licenses this profession; the NPPES record confirms identity only.
How much does Kathryn Mary Guffrey, M.D. prescribe under Medicare Part D?
In 2024, Kathryn Mary Guffrey, M.D. had 187 Medicare Part D claims for 144 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.