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Geriatric Medicine

Anne M. Giesen, DO

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

Summary

Dr. Anne M. Giesen, DO is a geriatrician at 2919 Valmont Rd, Suite 204, Boulder, CO 80301. Phone: (720) 249-4456. Accepts Medicare assignment. In 2024, Anne M. Giesen had 136 Original Medicare patients and 530 services. NPI 1851408926. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Geriatrician (Medicare lists Geriatric Medicine)
  • Address: 2919 Valmont Rd, Suite 204, Boulder, CO 80301 · Directions (1 more location)
  • Phone: (720) 249‑4456
  • Medicare: Accepts Medicare assignment
  • Hospitals: AdventHealth Avista, Boulder Community Health, Longs Peak Hospital
  • Group practice: Wisdom Health PC
  • Medical school: University Of New England, College Of Osteo Medicine · graduated 1996 (30 years since medical school)
  • Gender (as listed): Female
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Anne M. Giesen, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Anne M. Giesen accept Medicare assignment?
Yes. Medicare's clinician data says Anne M. Giesen accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Anne M. Giesen see?
In 2024, CMS data shows 136 Original Medicare patients and 530 services for Anne M. Giesen. This counts Original Medicare only and measures volume, not quality.
What is Anne M. Giesen's NPI number?
1851408926. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Anne M. Giesen, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients136
Services billed to Medicare530
Different services or procedures26
Participating Medicare providerYes
Average age of these patients81

Most frequent services

  1. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)156 services
  2. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)117 services
  3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)66 services
  4. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)26 services
  5. Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and (G0180)17 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High cholesterol75%
  • High blood pressure59%
  • Arthritis47%
  • Depression32%
  • Anxiety31%
  • Ischemic heart disease30%

Hospitals where Anne M. Giesen works

Medicare's Facility Affiliation Data lists Anne M. Giesen at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • AdventHealth AvistaLouisville, CO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 060103
  • Boulder Community HealthBoulder, CO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 060027
  • Longs Peak HospitalLongmont, CO · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 060128

Practice locations

Addresses where Anne M. Giesen is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Anne M. Giesen as a member of this group (CMS data updated October 2, 2026).

  • Wisdom Health PC11 clinicians in the group

Specialties

Find other Geriatric Medicine doctors in Colorado →

Other geriatricians in Colorado

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

All geriatricians in Colorado →

Other clinicians in Wisdom Health PC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialDO
Medical schoolUniversity Of New England, College Of Osteo Medicine
Graduation year1996 (30 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1851408926
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 October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians