Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Rheumatology

Lori L. Maran, MD

Works at hospitals in Louisville, CO · Boulder, CO · Longmont, CO · Colorado

Summary

Lori L. Maran, MD (Rheumatology) is listed by Medicare at 3 hospitals in Louisville, CO, Boulder, CO and Longmont, CO. NPI 1740373687. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Lori L. Maran, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

RheumatologyPrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
25Years since medical school (graduated 2001)
Hahnemann University College Of MedicineMedical school
FemaleGender (as listed)
Boulder Medical Center, PCGroup practice

Quick answers

Which hospitals does Lori L. Maran work at?
Medicare's official clinician data lists Lori L. Maran at 3 hospitals: AdventHealth Avista, Boulder Community Health and Longs Peak Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Lori L. Maran see patients?
Medicare's clinician data lists 1 practice location in Boulder, CO. Call before your visit to confirm the address.
What is Lori L. Maran's specialty?
Medicare lists Rheumatology as the primary specialty, and also Internal Medicine.
Does Lori L. Maran accept Medicare assignment?
Yes. Medicare's clinician data says Lori L. Maran accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
Does Lori L. Maran offer telehealth?
Medicare's clinician data says Lori L. Maran offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Lori L. Maran?
(303) 440-3000, as listed in official Medicare / NPI Registry data.
What is Lori L. Maran's NPI number?
1740373687. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Lori L. Maran works

Medicare's Facility Affiliation Data lists Lori L. Maran at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Lori L. Maran is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Lori L. Maran as a member of this group (CMS data updated 2026-10-02).

  • Boulder Medical Center, PC86 clinicians in the group

Specialties

Find other Rheumatology doctors in Colorado →

Other rheumatologists in Colorado

Clinicians with the same Medicare primary specialty in Colorado — not a recommendation.

All rheumatologists in Colorado →

Clinician information

CredentialMD
Medical schoolHahnemann University College Of Medicine
Graduation year2001
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1740373687
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians