Dr. Nathaniel S. Chappelle, MD
- Medicare services, 2021
- 32
- Part D claims, 2024
- 218
- Hospital affiliations
- 1
- Industry payments
- $69
- Medical groups
- 6
- Practice address
- 1024 S Lemay Ave, Fort Collins, CO 80524
- Practice phone
- Call (215) 456-6611
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Jefferson Einstein Hospital
Fort Collins, Colorado
Find Dr. Chappelle's professional email, personal email and mobile number
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Dr. Nathaniel S. Chappelle is a family medicine physician in Fort Collins, Colorado
Dr. Chappelle practices at Jefferson Einstein Hospital in Fort Collins, Colorado.
Dr. Chappelle's NPI, 1194160077, was assigned on May 6, 2013. Dr. Chappelle graduated from University of Colorado School of Medicine, Denver in 2013. Dr. Chappelle holds Colorado license 0059705.
- NPI
- 1194160077NPI Registry (opens in a new tab)
- NPI enumeration date
- May 6, 2013
- NPI status
- Active
- Practice phone
- (215) 456-6611
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Nathaniel S. Chappelle practices at Jefferson Einstein Hospital in Fort Collins, Colorado
Dr. Chappelle's primary practice is Jefferson Einstein Hospital, at 1024 S Lemay Ave, Fort Collins, CO 80524 in Larimer County. The practice phone is (215) 456-6611.
- Jefferson Einstein Hospital1024 S Lemay Ave, Fort Collins, CO 80524 · Larimer CountyPhone(215) 456-6611
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Nathaniel S. Chappelle is affiliated with 3 sites of care and 6 medical groups
Dr. Chappelle's primary practice is Jefferson Einstein Hospital in Fort Collins, Colorado. Dr. Chappelle is also affiliated with Haxtun Health. The medical group on file is Pathways Hospice & Palliative Care. Dmand AI also links Dr. Chappelle to 5 more medical groups and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Nathaniel S. Chappelle's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chappelle practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Jefferson Einstein Hospital | Available with a free account |
| +2 more sites and 5 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Nathaniel S. Chappelle is one of 2,952 family medicine physicians in Colorado
Family medicine is Dr. Chappelle's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Chappelle is licensed in Colorado.
Specialties and state licenses
- Family medicine, ColoradoPrimary
Family medicine physicians near Dr. Chappelle
Counts of family medicine physicians 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. Nathaniel S. Chappelle billed Medicare for 32 services in 2021
CMS data shows 32 Medicare services from Dr. Chappelle across 1 procedure code in 2021. Medicare paid $1,726 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Chappelle's Medicare services by type, 2017 to 2021
- 2017
- 2021
- Office and hospital visits
- 2017: 192021: 3268%
Dr. Chappelle compared with the Colorado median for family medicine physicians, 2021
- Dr. Chappelle
- Colorado median
- Medicare services
- 32vs 27288% below
- Part D claims
- 41vs 68094% below
Medians across 2,975 family medicine physicians in Colorado with Dmand AI profiles that report each measure.
Dr. Chappelle's most billed Medicare procedure codes, 2021
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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Nathaniel S. Chappelle's patients have a median age of 84
Across all payers, Dmand AI patient panel data puts Dr. Chappelle's median patient age at 84, with 54% women.
Dr. Chappelle's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 84
Patient panel by sex, all payers
- Women54%
- Men46%
Source: Dmand AI Patient Panel Data
Dr. Nathaniel S. Chappelle wrote 218 Medicare Part D claims in 2024
In 2024, Dr. Chappelle wrote 218 Medicare Part D claims for 89 patients. 89% of them were for generic drugs. CMS names the drug for 41 of them, across 3 drugs with 11 or more claims each, at $722 in total drug cost. In 2023, CMS named 51 claims across 4 drugs.
Dr. Chappelle's Part D claims by kind of drug, 2024
- Generic193 claims89%
- Brand-name and other25 claims11%
Dr. Chappelle'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. Chappelle's Part D claims, 2024
- Opioids17%38 of 218 claims
- Antipsychotics, patients 65 and over6%13 of 218 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: 512024: 4120%
Drugs named by CMS: 3 in 2024, 4 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
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Dr. Nathaniel S. Chappelle received $69 in industry payments from 2016 to 2018
CMS Open Payments shows 6 general payments to Dr. Chappelle from 2 drug and device companies from 2016 to 2018. Food and beverage make up the largest share, 100% of the total. GlaxoSmithKline, LLC. paid the most, $59.
General payments to Dr. Chappelle by program year, 2016 to 2018
Companies that paid Dr. Chappelle the most, 2016 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Nathaniel S. Chappelle graduated from University of Colorado School of Medicine, Denver
Dr. Chappelle graduated from University of Colorado School of Medicine, Denver in 2013.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Nathaniel S. Chappelle'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 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 Data |
| 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) |
| Industry payments | Open Payments (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. Nathaniel S. Chappelle
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. Nathaniel S. Chappelle's NPI number?
Dr. Nathaniel S. Chappelle's NPI number is 1194160077. It was assigned on May 6, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. Nathaniel S. Chappelle?
Dr. Nathaniel S. Chappelle is a family medicine physician in Fort Collins, Colorado. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Nathaniel S. Chappelle practice?
Dr. Chappelle practices at 1024 S Lemay Ave, Fort Collins, CO 80524. Dr. Chappelle's primary practice is Jefferson Einstein Hospital in Fort Collins, Colorado. Dmand AI also links Dr. Chappelle to 5 medical groups and 1 group practice or clinic.
What is Dr. Nathaniel S. Chappelle's office phone number?
The practice phone on file for Dr. Chappelle is (215) 456-6611.
What is Dr. Nathaniel S. Chappelle's medical license number?
Dr. Chappelle holds Colorado license 0059705.
Which hospitals is Dr. Nathaniel S. Chappelle affiliated with?
Dr. Chappelle is affiliated with Haxtun Health.
What medical group is Dr. Nathaniel S. Chappelle part of?
Dr. Chappelle is linked to Pathways Hospice & Palliative Care. Dmand AI links Dr. Chappelle to 5 more medical groups.
Does Dr. Nathaniel S. Chappelle accept Medicare?
Yes. CMS data shows Dr. Chappelle billed Medicare for 32 services in 2021.
What services does Dr. Nathaniel S. Chappelle bill to Medicare?
In 2021, Dr. Chappelle's most billed Medicare services were nursing facility care (99308).
Where did Dr. Nathaniel S. Chappelle go to medical school?
Dr. Chappelle graduated from University of Colorado School of Medicine, Denver in 2013.
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What drugs does Dr. Nathaniel S. Chappelle prescribe most?
In 2024 Medicare Part D data, Dr. Chappelle's most prescribed drugs by claims were Morphine Sulfate, Levothyroxine Sodium and Lorazepam.
Has Dr. Nathaniel S. Chappelle received payments from drug or device companies?
CMS Open Payments shows $69 in general payments to Dr. Chappelle from 2 companies from 2016 to 2018. The largest total came from GlaxoSmithKline, LLC.
How long has Dr. Nathaniel S. Chappelle been practicing?
Dr. Chappelle graduated from medical school in 2013, 13 years ago.
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