NPPES file of Aug 9, 2026

Erin Sue Marcum, M.D.

Hospitalist Physician · Westminster, CO

Erin Sue Marcum, M.D. is a hospitalist physician with a practice address in Westminster, Colorado, and NPI 1932361706, issued on Jul 1, 2008. Check the license (Colorado DR.0050223, as entered in NPPES) on the Colorado Medical Board; 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
1932361706
Name
Erin Sue Marcum
Credential
M.D.
Primary taxonomy
Hospitalist Physician 208M00000X
License numbers
DR.0050223 CO
2809 CO
Self-reported in NPPES; status is on the state search
Practice location
14300 Orchard Pkwy, Westminster, CO 80023
Phone
(303) 338-4545
Enumerated
Jul 1, 2008
Record last updated
Dec 12, 2025
Medicaid ID
01056379 CO
Medicare enrollment
Enrolled (PECOS I20110826000615); accepts Medicare assignment
Medical or professional school
University Of Washington School Of Medicine, 2008
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 14300 Orchard Pkwy

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

  1. Rachel Baca, MDFamily Medicine Physician1568108967
  2. Severn Barloco, M.D.Surgery Physician1164515847
  3. Halley Berry, PHARMDPharmacist1154880888
  4. James BowieFamily Medicine Physician1720581523
  5. Sara Brady, WHNPWomen's Health Nurse Practitioner1881119980
  6. Emily BressanFamily Medicine Physician1992266480

Verify Erin Sue Marcum in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersColorado Medical Board
    Search for license DR.0050223    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
Open the Colorado license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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72% fewer Medicare Part D claims than the average hospitalist physician in 2024

146 Medicare Part D claims for 73 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D.

  1. Erin Marcum146
  2. Specialty average521

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

  1. Colorado Permanente Medical Group PCLafayette, CO

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Hospitalist Physician providers in Colorado

There are 806 hospitalist physician records in Colorado.

All 806 in Colorado → Every provider in Westminster →

Other hospitalist physician records in Colorado

  1. John Abdel Sayed, M.D.Pueblo, CO1417523259
  2. Victor Abela, D.O.Denver, CO1902194152
  3. Aida AbrahamCastle Rock, CO1922502152
  4. Alexander Abramowicz, M.D.Aurora, CO1215356241
  5. Guy Adair, DO, MBSAurora, CO1811632318
  6. Subodh Adhikari, M.D.Colorado Springs, CO1457731861
  7. Katlynn Adkins, MDDenver, CO1679967095
  8. Brett Ahlberg, DOGreenwood Village, CO1235635004
  9. Marwan Ahmed, MDPueblo, CO1487317632
  10. Kent Aikin, MDCortez, CO1962485599

Common questions

What is Erin Sue Marcum, M.D.'s NPI number?

Erin Sue Marcum, M.D.'s National Provider Identifier (NPI) is 1932361706, issued on Jul 1, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Erin Sue Marcum, M.D. located?

The NPPES record lists a practice address at 14300 Orchard Pkwy, Westminster, CO, 80023. Phone: (303) 338-4545. Providers update this record themselves, so call before visiting.

How can I verify Erin Sue Marcum, M.D.'s license?

NPPES lists Colorado license number DR.0050223, 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 Erin Sue Marcum, M.D. prescribe under Medicare Part D?

In 2024, Erin Sue Marcum, M.D. had 146 Medicare Part D claims for 73 beneficiaries; the average among hospitalist physician prescribers was 521. 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.