Internists in Littleton, CO

  • Internal medicine
  • Littleton, Colorado
Internists
55
Linked to a hospital or group
29
Hospitals with an internist
10
Medical groups with an internist
9
Practice at a hospital
17

There are 55 internists in Littleton. Colorado Permanente Medical Group has the most, 5, and AdventHealth Littleton has the most affiliated internists, 10. 35% finished medical school 30 or more years ago.

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Littleton internists, listed A to Z by last name

Each internist on the list has internal medicine as their primary specialty and a Littleton practice address. The list shows the NPI, and how many hospitals and medical groups each one practices with. A free account names every hospital and group, with validated contacts.

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Littleton internists, A to Z
InternistHospitalsMedical groupsEmail and phone
Fernando L. Arroyo, MDNPI 1396962718-2 groupsContacts
Sheanna L. BarclayNPI 1033246012-1 groupContacts
Kathryn Rose Brim Hicks, DONPI 14376862503 hospitals4 groupsContacts
Halina Brukner, MDNPI 15281200781 hospital1 groupContacts
Mark C. Campigotto, DONPI 18911894781 hospital2 groupsContacts
Anna F. Cosyleon, MDNPI 1659401404-1 groupContacts
John M. Fedack, MDNPI 1598809394-1 groupContacts
Andy M. FineNPI 1245261965-1 groupContacts
Kelsey M. Flint, MDNPI 13667418295 hospitals2 groupsContacts
Karl Gordon Patti, MDNPI 12254907825 hospitals1 groupContacts
Gerard Livaudais Guillory, MDNPI 1235166315-1 groupContacts
Nancy Wilcox Hooyman, MDNPI 1952356339--Contacts
Jagar A. Jasem, MD, MPHNPI 19729269882 hospitals1 groupContacts
Kendall L. Lubeck, MDNPI 1427041920-1 groupContacts
Edward Anthony Malcolm, DONPI 16294168622 hospitals2 groupsContacts
Cristen J. Mazzella, MDNPI 1790715332-1 groupContacts
Braden K. Mogler, MDNPI 11547480693 hospitals7 groupsContacts
Joshua J. Moore, DONPI 12357948845 hospitals4 groupsContacts
Jennifer A. O'Brien, MDNPI 12353547961 hospital1 groupContacts
Brian P. O'SullivanNPI 18019266621 hospital1 groupContacts
Nicholas Osborn Palmeri, MDNPI 15183526324 hospitals1 groupContacts
Melissa L. PerezNPI 1225172000--Contacts
Innessa T. Porter, MDNPI 1649492513-1 groupContacts
Lauren Angela Katkish Shaw, MDNPI 10435537537 hospitals10 groupsContacts
Heidi Weiss Tessler, MDNPI 13068222911 hospital2 groupsContacts
Robert Keith Vonrueden, MDNPI 1720299290-1 groupContacts
Angela M. Walcher, MDNPI 14372967121 hospital1 groupContacts
Diane Choi Yang, MD, MPHNPI 13060722021 hospital-Contacts
Nima Yazdani, MDNPI 10130636013 hospitals1 groupContacts
David Yu, MDNPI 1114182003-1 groupContacts

The list shows the 30 internists with a public profile. The other 25 are counted in the total and searchable with a free account.

Sources: NPPES NPI Registry (CMS) and Dmand AI Affiliation Data

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Find Littleton internists by the EHR they use

Dmand AI has the EHR for 36 of 55 Littleton internists, at their hospital and their practice. Filter by Epic, Oracle Health, MEDITECH, athenahealth and more, then reach them with validated work emails and mobile numbers.

Colorado Permanente Medical Group has the most internists in Littleton, with 5

Critical Care and Pulmonary Consultants (CCPC) is second with 3, and New West Physicians third with 3. Counts are internists with a Colorado address linked to each group.

Sources: Dmand AI Affiliation Data and Dmand AI Org Hierarchy Data

AdventHealth Littleton has the most affiliated internists in Littleton, with 10

UCHealth Highlands Ranch Hospital is second with 6, and AdventHealth Porter third with 5. Littleton internists are affiliated with 10 hospitals in all.

Top 10 of 10 Littleton hospitals with an affiliated internistAll 3 Littleton hospitals

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Each public profile names one place an internist practices. A free account shows all of them, with the employer, the EHR and validated contacts.

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Source: Dmand AI Affiliation Data

Group practices and clinics are the most common site of care for Littleton internists, with 20

17 also practice at hospitals, and 4 at breast imaging centers. An internist can practice at several kinds of site, so the shares overlap.

Littleton internists by site of care

  1. Medical group practices20
  2. Hospitals17
  3. Breast imaging centers4
  4. Therapy and rehab centers4
  5. Urgent care centers4

Sources: Dmand AI Affiliation Data and Dmand AI Practice Data

35% of Littleton internists finished medical school 30 or more years ago

8 of the 23 Littleton internists with a graduation year on file. 2 graduated in the last 10 years, fewer than graduated 40 or more years ago.

Physicians by years since medical school

  1. Under 10 years ago2
  2. 10 to 19 years ago9
  3. 20 to 29 years ago4
  4. 30 to 39 years ago5
  5. 40 or more years ago3

Source: Dmand AI Professional Profile Data

Every Littleton internist profile shows current hospitals and groups, Medicare activity and NPI details

  • Primary practiceThe main place they practice, with its type and cityOn every profile
  • Every site of careEach hospital, clinic and group where they practice nowWith a free account
  • EmployerThe organization they work for, when one is on fileWith a free account
  • Medicare servicesServices and procedure codes billed to Medicare, from CMSOn every profile
  • Medicare Part D prescribingClaims and drug costs from Part D, from CMSOn every profile
  • Industry paymentsPayments from drug and device makers, from CMS Open PaymentsOn every profile
  • Publications and clinical trialsResearch papers and trials linked to the NPI, when on fileOn every profile
  • Licenses and graduation yearState license numbers and medical school graduation yearOn every profile
  • NPI detailsNPI, enumeration date, primary taxonomy and practice addressOn every profile
  • Work email and mobile numberFound on request through healthcare waterfall enrichment, then validatedWith a free account
  • EHR in useThe EHR at each site where they practiceWith a free account
  • Colleagues at each siteThe clinicians they work with at each hospital and groupWith a free account

Free account: 30 days free, self-serve, no credit card.

Sources: NPPES NPI Registry (CMS), Medicare Physician & Other Practitioners (CMS), Open Payments (CMS) and Dmand AI Affiliation Data

Sources for the Littleton internist directory

Sources for the data on this page
Data on this pageSource
HCPs, types and specialtiesNPPES NPI Registry (CMS) and Dmand AI Professional Profile Data
Sites of care, hospitals and medical groupsDmand AI Affiliation Data
Medical school graduation yearDmand AI Professional Profile Data

Data last refreshed October 2026Report an inaccuracyRemove my information

Internists are HCPs whose primary specialty is internal medicine (taxonomy code 207R00000X), with an active NPI and a Littleton practice address.

FAQ

Frequently asked questions about internists in Littleton

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

How many internists are in Littleton?

55 internists have an active NPI, a Littleton practice address and internal medicine (taxonomy code 207R00000X) as their primary specialty. 29 of them are linked to a hospital or medical group.

Which Littleton medical groups have the most internists?

Colorado Permanente Medical Group, with 5, followed by Critical Care and Pulmonary Consultants (CCPC) with 3 and New West Physicians with 3.

Which Littleton hospitals have the most internists?

AdventHealth Littleton, with 10 affiliated internists, followed by UCHealth Highlands Ranch Hospital with 6 and AdventHealth Porter with 5.

What share of Littleton internists practice at a hospital?

17 of the 29 Littleton internists with a mapped site of care, or 59%, have a current hospital affiliation.

What is the taxonomy code for internal medicine?

207R00000X is the NPPES taxonomy code for internal medicine. Sub-specialties with their own code are counted on their own lists.

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Search 55 Littleton internists by hospital, medical group and the EHR they use, with validated work emails and mobile numbers.

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