Mary Elizabeth Guese, M.D.
Internal Medicine Physician · Highlands Ranch, CO
Mary Elizabeth Guese, M.D. is an internal medicine physician with a practice address in Highlands Ranch, Colorado, and NPI 1730479742, issued on Apr 11, 2011. Check the license (Colorado 053501, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Mary Elizabeth Guese
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 053501 CO
Self-reported in NPPES; status is on the state search - Practice location
- 9285 Hepburn St, Highlands Ranch, CO 80129
- Phone
- (303) 338-4545
- Enumerated
- Apr 11, 2011
- Record last updated
- Jun 21, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 05572541 CO
- Medicare enrollment
- Enrolled (PECOS I20140827002118); accepts Medicare assignment
- Medical or professional school
- University Of Colorado School Of Medicine, Denver, 2011
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,046 in Colorado → Look up another NPI →
Also registered at 9285 Hepburn St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mary Elizabeth Guese in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 053501Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% more Medicare Part D claims than the average internal medicine physician in 2024
5,891 Medicare Part D claims for 658 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 219 claims were for opioids.
Most prescribed
- Atorvastatin Calcium388 claims
- Levothyroxine Sodium385 claims
- Lisinopril227 claims
- Omeprazole205 claims
- Losartan Potassium189 claims
- Simvastatin188 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 one group practice
- Colorado Permanente Medical Group PCHighlands Ranch, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Elizabeth Guese among 2,046 internal medicine physician records in Colorado
Mary Elizabeth Guese, M.D. is one of 2,046 internal medicine physician records with a practice address in Colorado. 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 2011, is newer than 69% of them.
- NPI issued2011 · 69% of these records are older, 28% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2011 · median 2006 among the 1,090 with a school on file
- Record last updated2021 · 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 207R00000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
27 internal medicine physician records list a practice address in Highlands Ranch
They are 27 of the 1,361 NPPES records with a practice address in Highlands Ranch, and 2,046 internal medicine physician records in Colorado.
All 2,046 in Colorado → Every provider in Highlands Ranch → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- John Aikin, MDHighlands Ranch, CO 801291770588402
- Deborah BeasleyHighlands Ranch, CO 801291144369547
- Ellen Burkett, MDHighlands Ranch, CO 801291659334118
- Brownie Flesche, M.D.Highlands Ranch, CO 801291184768954
- Katy HoxworthHighlands Ranch, CO 801291164566873
- Joseph Ladika, MDHighlands Ranch, CO 801291477534154
- Todd Larson, M.D.Highlands Ranch, CO 801291316958051
- Jonathan Lee, M DHighlands Ranch, CO 801291235128562
Common questions
What is Mary Elizabeth Guese, M.D.'s NPI number?
Mary Elizabeth Guese, M.D.'s National Provider Identifier (NPI) is 1730479742, issued on Apr 11, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Mary Elizabeth Guese, M.D. located?
The NPPES record lists a practice address at 9285 Hepburn St, Highlands Ranch, CO, 80129. Phone: (303) 338-4545. Providers update this record themselves, so call before visiting.
How can I verify Mary Elizabeth Guese, M.D.'s license?
NPPES lists Colorado license number 053501, as entered by the provider. Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mary Elizabeth Guese, M.D. prescribe under Medicare Part D?
In 2024, Mary Elizabeth Guese, M.D. had 5,891 Medicare Part D claims for 658 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.