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Family Practice

Herbert D. Fahrenholtz, MD

Works at hospitals in Greeley, CO · Colorado

Summary

Dr. Herbert D. Fahrenholtz, MD is a family doctor at 1600 23rd Ave, Greeley, CO 80634. Phone: (970) 810-2424. Accepts Medicare assignment. NPI 1811986169. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026.

  • Specialty: Family doctor (Medicare lists Family Practice)
  • Address: 1600 23rd Ave, Greeley, CO 80634 · Directions
  • Phone: (970) 810‑2424
  • Medicare: Accepts Medicare assignment
  • Hospital: Banner North Colorado Medical Center
  • Group practice: North Colorado Family Medicine
  • Medical school: University Of Kansas School Of Med (kc/wich/sal) · graduated 1972 (54 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Herbert D. Fahrenholtz, 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 Herbert D. Fahrenholtz accept Medicare assignment?
Yes. Medicare's clinician data says Herbert D. Fahrenholtz 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.
What is Herbert D. Fahrenholtz's NPI number?
1811986169. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Herbert D. Fahrenholtz works

Medicare's Facility Affiliation Data lists Herbert D. Fahrenholtz 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.

Practice locations

Addresses where Herbert D. Fahrenholtz is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Herbert D. Fahrenholtz as a member of this group (CMS data updated October 2, 2026).

  • North Colorado Family Medicine19 clinicians in the group

Specialties

Find other Family Practice doctors in Colorado →

Other family doctors in Greeley

Clinicians with the same Medicare primary specialty in Greeley, CO — not a recommendation.

All family doctors in Greeley →

Other clinicians in North Colorado Family Medicine

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

Clinician information

CredentialMD
Medical schoolUniversity Of Kansas School Of Med (kc/wich/sal)
Graduation year1972 (54 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1811986169
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. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  5. Medicare Care Compare — official Medicare tool to look up clinicians