Dr. Nathan Russell Ayer, MD, MPH
- Medicare services, 2024
- 1,979
- Medicare patients, 2024
- 514
- Part D claims, 2024
- 10,251
- Hospital affiliations
- 5
- Medical group
- 1
- Practice address
- 2695 Rocky Mountain Ave, Loveland, CO 80538
- Practice phone
- Call (970) 624-4420
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
UCHealth Medical Group
Loveland, Colorado
Find Dr. Ayer's professional email, personal email and mobile number
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Dr. Nathan Russell Ayer is an internist in Loveland, Colorado
Dr. Ayer practices at UCHealth Medical Group in Loveland, Colorado.
Dr. Ayer's NPI, 1457361172, was assigned on August 8, 2006. Dr. Ayer graduated from University of Rochester School of Medicine and Dentistry in 2001. Dr. Ayer holds Colorado license DR.0054301.
- NPI
- 1457361172NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3072593847
- NPI enumeration date
- August 8, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (970) 624-4420
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Nathan Russell Ayer practices at UCHealth Medical Group in Loveland, Colorado
Dr. Ayer's primary practice is UCHealth Medical Group, at 2695 Rocky Mountain Ave, Loveland, CO 80538 in Larimer County. The practice phone is (970) 624-4420.
- UCHealth Medical Group2695 Rocky Mountain Ave, Loveland, CO 80538 · Larimer CountyPhone(970) 624-4420
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Nathan Russell Ayer is affiliated with 9 sites of care and 1 medical group
Dr. Ayer's primary practice is UCHealth Medical Group in Loveland, Colorado. Dr. Ayer is also affiliated with UCHealth Medical Center of the Rockies. The medical group on file is UCHealth Medical Group. Dmand AI also links Dr. Ayer to 4 more hospitals and 3 home health agencies, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Nathan Russell Ayer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ayer practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UCHealth Medical Group | Available with a free account |
| +8 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Nathan Russell Ayer is one of 1,668 internists in Colorado
Internal medicine is Dr. Ayer's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Ayer's licenses on file in 2 states: Colorado and Vermont.
Specialties and state licenses
- Internal medicine, ColoradoPrimary
- Vermont license
Internists near Dr. Ayer
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Nathan Russell Ayer billed Medicare for 1,979 services in 2024
CMS data shows 1,979 Medicare services from Dr. Ayer across 13 procedure codes in 2024, for 514 Medicare patients. Medicare paid $101,094 for them. Every service was in an office.
Dr. Ayer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,0612024: 1,1135%
- Other services
- 2023: 5212024: 520No change
- Tests and treatments
- 2023: 2002024: 33467%
- Lab and pathology
- 2023: 02024: 12
Dr. Ayer compared with the Colorado median for internists, 2024
- Dr. Ayer
- Colorado median
- Medicare services
- 1,979vs 3775.2 times
- Medicare patients
- 514vs 1862.8 times
- Part D claims
- 9,463vs 31829.8 times
Medians across 1,630 internists in Colorado with Dmand AI profiles that report each measure.
Dr. Ayer's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ayer and other internists in Colorado.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Nathan Russell Ayer treated 514 Medicare patients in 2024, average age 76
CMS counts 514 Medicare patients who saw Dr. Ayer in 2024. The largest group is 65 to 74, with 227 patients. 75% of them have high cholesterol, and 66% have high blood pressure. 3% are also on Medicaid. Their average risk score is 1.09, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Ayer's median patient age at 76, with 45% women.
Dr. Ayer's Medicare patients by age, 2024
Dr. Ayer's Medicare patients by sex, 2024
- Women24247%
- Men27253%
Chronic conditions among Dr. Ayer's Medicare patients, 2024
- High cholesterol75%
- High blood pressure66%
- Arthritis45%
- Ischemic heart disease29%
- Mood disorders25%
- Depression24%
- Chronic kidney disease20%
- Diabetes20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ayer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women45%
- Men55%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Nathan Russell Ayer wrote 10,251 Medicare Part D claims in 2024
In 2024, Dr. Ayer wrote 10,251 Medicare Part D claims for 781 patients. 89% of them were for generic drugs. CMS names the drug for 9,463 of them, across 127 drugs with 11 or more claims each, at $762,504 in total drug cost. In 2023, CMS named 8,919 claims across 122 drugs.
Dr. Ayer's Part D claims by kind of drug, 2024
- Generic9,138 claims89%
- Brand-name1,069 claims10%
- Other44 claims0%
Dr. Ayer's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Ayer's Part D claims, 2024
- Opioids3%307 of 10,251 claims
- Antibiotics1%143 of 10,251 claims
- Antipsychotics, patients 65 and over1%114 of 10,251 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 8,9192024: 9,4636%
Drugs named by CMS: 127 in 2024, 122 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Nathan Russell Ayer offers telehealth to Medicare patients
Dr. Ayer accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Ayer as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Nathan Russell Ayer graduated from University of Rochester School of Medicine and Dentistry
Dr. Ayer graduated from University of Rochester School of Medicine and Dentistry in 2001.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Nathan Russell Ayer's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Nathan Russell Ayer
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Nathan Russell Ayer's NPI number?
Dr. Nathan Russell Ayer's NPI number is 1457361172. It was assigned on August 8, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Nathan Russell Ayer?
Dr. Nathan Russell Ayer is an internist in Loveland, Colorado. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Nathan Russell Ayer practice?
Dr. Ayer practices at 2695 Rocky Mountain Ave, Loveland, CO 80538. Dr. Ayer's primary practice is UCHealth Medical Group in Loveland, Colorado. Dmand AI also links Dr. Ayer to 4 hospitals and 3 home health agencies.
What is Dr. Nathan Russell Ayer's office phone number?
The practice phone on file for Dr. Ayer is (970) 624-4420.
What is Dr. Nathan Russell Ayer's medical license number?
Dr. Ayer holds Colorado license DR.0054301, one of the licenses on file in 2 states.
Which states has Dr. Nathan Russell Ayer been licensed in?
Dmand AI has state licenses on file for Dr. Ayer in Colorado and Vermont.
Which hospitals is Dr. Nathan Russell Ayer affiliated with?
Dr. Ayer is affiliated with UCHealth Medical Center of the Rockies. Dmand AI links Dr. Ayer to 4 more hospitals.
What medical group is Dr. Nathan Russell Ayer part of?
Dr. Ayer is linked to UCHealth Medical Group.
Does Dr. Nathan Russell Ayer accept Medicare?
Yes. CMS data shows Dr. Ayer billed Medicare for 1,979 services in 2024, and Dr. Ayer accepts Medicare assignment.
Does Dr. Nathan Russell Ayer offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Ayer as offering telehealth services.
Show 5 more questionsShow fewer questions
How many Medicare patients does Dr. Nathan Russell Ayer see?
CMS counts 514 Medicare patients who saw Dr. Ayer in 2024, with an average age of 76.
What services does Dr. Nathan Russell Ayer bill to Medicare?
In 2024, Dr. Ayer's most billed Medicare services were office visit, established patient (99214), medicare service (G0439) and office visit, established patient (99213).
Where did Dr. Nathan Russell Ayer go to medical school?
Dr. Ayer graduated from University of Rochester School of Medicine and Dentistry in 2001.
What drugs does Dr. Nathan Russell Ayer prescribe most?
In 2024 Medicare Part D data, Dr. Ayer's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Rosuvastatin Calcium.
How long has Dr. Nathan Russell Ayer been practicing?
Dr. Ayer graduated from medical school in 2001, 25 years ago.
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