Catherine Marmillo, MD, MS
Family Medicine Physician · Steamboat Springs, CO
Catherine Marmillo, MD, MS is a family medicine physician with a practice address in Steamboat Springs, Colorado, and NPI 1518351147, issued on Mar 20, 2015. Check the license (Colorado DR.0067273, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Catherine Marmillo
- Credential
- MD, MS
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- DR.0067273 CO
Self-reported in NPPES; status is on the state search - Practice location
- 940 Central Park Dr Ste 100, Steamboat Springs, CO 80487
- Phone
- (970) 879-3327
- Enumerated
- Mar 20, 2015
- Record last updated
- Sep 24, 2023
- Medicare enrollment
- Enrolled (PECOS I20230629000628); accepts Medicare assignment
- Medical or professional school
- University Of Rochester School Of Medicine And Dentistry, 2015
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 940 Central Park Dr Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Evan Hardesty, MDFamily Medicine Physician1598257479
- Leah Hemeyer, M.A., L.P.C.Professional Counselor1861689598
- Sarah Hopfenbeck, M.D.Internal Medicine Physician1215096219
- Audrey Klawiter, DOFamily Medicine Physician1710341029
- Julia Von Allmen, PA-CPhysician Assistant1831476233
Verify Catherine Marmillo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license DR.0067273Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
13% fewer Medicare Part D claims than the average family medicine physician in 2024
3,080 Medicare Part D claims for 317 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 77 claims were for opioids.
Most prescribed
- Levothyroxine Sodium206 claims
- Atorvastatin Calcium121 claims
- Lisinopril98 claims
- Rosuvastatin Calcium91 claims
- Gabapentin79 claims
- Losartan Potassium75 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
- Steamboat Medical Partners PCSteamboat Springs, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
16 family medicine physician records list a practice address in Steamboat Springs
They are 16 of the 467 NPPES records with a practice address in Steamboat Springs, and 3,563 family medicine physician records in Colorado.
All 16 in Steamboat Springs → All 3,563 in Colorado → Every provider in Steamboat Springs →
Other family medicine physician records in Colorado
- Eric Abbott, D.O.Colorado Springs, CO1255522876
- John Abbott, D.O.Lamar, CO1255477790
- Rasha Abdelsalam, MDDenver, CO1891058467
- Baiju Abdulla, M.B.B.S.Colorado Springs, CO1316119076
- Nathalie Abisror, MDCastle Pines, CO1336634922
- Ashley Abrahamson, DOPueblo, CO1497324065
- Lara Abrahamson, MDFort Collins, CO1538145289
- Pamela Abrams, MDBroomfield, CO1073514188
- Hemamalini Achuthan, MDLakewood, CO1205982881
- Chris Adams, D.O.Limon, CO1144285248
Common questions
What is Catherine Marmillo, MD, MS's NPI number?
Catherine Marmillo, MD, MS's National Provider Identifier (NPI) is 1518351147, issued on Mar 20, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Catherine Marmillo, MD, MS located?
The NPPES record lists a practice address at 940 Central Park Dr Ste 100, Steamboat Springs, CO, 80487. Phone: (970) 879-3327. Providers update this record themselves, so call before visiting.
How can I verify Catherine Marmillo, MD, MS's license?
NPPES lists Colorado license number DR.0067273, 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 Catherine Marmillo, MD, MS prescribe under Medicare Part D?
In 2024, Catherine Marmillo, MD, MS had 3,080 Medicare Part D claims for 317 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.