HealthCareAtlasUSA

This site republishes official CMS/Medicare Care Compare data. It is not medical advice and does not recommend any specific hospital or treatment — for medical decisions, talk to a doctor.

Doctors / CO

NATHAN R AYER, MD

INTERNAL MEDICINE

Medical school: UNIVERSITY OF ROCHESTER SCHOOL OF MEDICINE AND DENTISTRY

Graduated: 2001

Offers telehealth

NPI: 1457361172

Practice Locations (6)

POUDRE VALLEY MEDICAL GROUP LLC

4404 BARRANCA LN, UNIT 101

CASTLE ROCK, CO 801047419

7207335260

POUDRE VALLEY MEDICAL GROUP LLC

11083 COLORADO BLVD

FIRESTONE, CO 805045873

3038338880

POUDRE VALLEY MEDICAL GROUP LLC

6767 29TH ST

GREELEY, CO 806345474

9702243636

POUDRE VALLEY MEDICAL GROUP LLC

1925 MOUNTAIN VIEW AVE

LONGMONT, CO 805013128

3037761234

POUDRE VALLEY MEDICAL GROUP LLC

221 E 29TH ST

LOVELAND, CO 805382746

POUDRE VALLEY MEDICAL GROUP LLC

1455 MAIN ST, SUITE 140

WINDSOR, CO 805505559

9706863950

Source: CMS National Downloadable File, September 2026.