Nels N. Dahlgren, MD

Medicare activity in 2024

Official CMS public-use data for Nels N. Dahlgren, 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.

Most frequent services

1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)59 services
2. New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)35 services
3. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)31 services
4. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)26 services
5. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)24 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 blood pressure75%
• High cholesterol75%
• Arthritis75%
• Anxiety37%
• Depression36%
• Diabetes30%

Hospitals where Nels N. Dahlgren works

Medicare's Facility Affiliation Data lists Nels N. Dahlgren 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.

• Carlsbad Medical CenterCarlsbad, NM · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 320063

Practice locations

Addresses where Nels N. Dahlgren is enrolled with Medicare (CMS data updated October 2, 2026).

• 2430 W Pierce StCarlsbad, NM 88220 (575) 887‑4100

Group practices

Medicare enrollment lists Nels N. Dahlgren as a member of this group (CMS data updated October 2, 2026).

• Carlsbad Anesthesia Services LLC10 clinicians in the group

Specialties

• Anesthesiologyprimary
• Addiction Medicinealso
• Pain Managementalso

Find other Anesthesiology doctors in New Mexico →

Other anesthesiologists in Carlsbad

Clinicians with the same Medicare primary specialty in Carlsbad, NM — not a recommendation.

• Katrina F. Riboni, MD
• Alexander V. Shydohub, MD
• Aaron I. Cohn, MD
• Steven T. Knauer, MD
• Kathleen Macdonald, MD

All anesthesiologists in Carlsbad →

Other clinicians in Carlsbad Anesthesia Services LLC

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

• Katrina F. Riboni, MD
• Alfonso Jimenez Haro, CNA
• Daniel H. Cooper, MD
• Aaron I. Cohn, MD
• Michelle K. Hawkinson, CNA
• Steven T. Knauer, MD

Clinician information

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