Margaret Herrfeldt, RD
Margaret Herrfeldt, RD is a Registered Dietitian in Fort Collins, CO, registered under NPI 1003181546.
Getting there
Here is what surrounds this office in Fort Collins, based on OpenStreetMap data collected Sep 6, 2026. Parking is available about 827 ft away. The nearest transit stop is 0.21 mi away, served by Lemay & Elizabeth. If you arrive early, there is a coffee shop 0.42 mi away.
Getting here and what is nearby
Transit Lemay & Poudre Valley Hospital 409 ft ~2 min
Transit Lemay & Poudre Valley Hospital 477 ft ~2 min
Parking 499 ft ~2 min
Parking Poudre Valley Hospital Parking Garage 673 ft ~3 min
1027 South Lemay Avenue, Fort Collins 80524
Restaurant Wing Shack 815 ft ~4 min
1011 South Lemay Avenue, Fort Collins 80524
Mo-Su 11:00-22:00
Parking 827 ft ~4 min
Convenience Loaf 'N Jug 1,012 ft ~4 min
940 South Lemay Avenue, Fort Collins 80524
Gas station Loaf 'N Jug 1,004 ft ~4 min
Transit Lemay & Elizabeth 0.21 mi ~5 min
Restaurant Culver's 0.24 mi ~5 min
918 South Lemay Avenue, Fort Collins 80524
10:30-22:00
Restaurant Pizza Hut 0.26 mi ~6 min
Convenience 7-Eleven 0.36 mi ~8 min
Gas station 7-Eleven 0.38 mi ~8 min
Grocery Safeway 0.41 mi ~9 min
731 South Lemay Avenue, Fort Collins 80524
Mo-Su 06:00-23:00
Coffee Berry Blendz 0.42 mi ~9 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 722926 | CO | Registered Dietitian primary |
This provider holds licence 722926 issued in CO. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Dietitian, Registered covers
A Registered Dietitian (RD)/Registered Dietitian Nutritionist (RDN) is an individual uniquely trained in the science of nutrition and practice of dietetics to design and provide medical nutrition therapy (MNT) and other evidence-based applications of the Nutrition Care Process (NCP) that exemplify the profession's systematic approach to providing high quality nutrition care. Registered dietitians provide MNT for the purpose of disease prevention or management, or to treat or rehabilitate an illness, injury, or condition, with the use of specific, indicated physical and cognitive nutrition care services comprised of one or more of the following aspects of the NCP: nutrition assessment/reassessment, nutrition diagnosis, nutrition intervention (e.g., nutrition counseling, therapeutic diet ordering, and nutrition education) and nutrition monitoring and evaluation. NUCC Health Care Provider Taxonomy, code 133V00000X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003181546 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 16, 2012 |
| Last updated | Mar 16, 2012 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | RD |
| Practice address |
1024 S LEMAY AVE Fort Collins, CO 80524 (970) 495-8205 Fax (970) 495-7644 |
| Mailing address |
2695 ROCKY MOUNTAIN AVE SUITE 150 Loveland, CO 80538 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 1 | 8 | 1 | 5 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 8 | 2 | 5 | 8 |
Sum = 54 · next multiple of 10 = 60 · check digit = 6 · actual last digit = 6
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.