William Lewis Marr IV, PA-C
- Medicare patients, 2024
- 213
- Part D claims, 2024
- 3,450
- Hospital affiliations
- 1
- Medical group
- 1
- State licenses
- 2
- Practice address
- 1010 Three Springs Blvd, Durango, CO 81301
- Practice phone
- Call (970) 247-4311
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find William Marr's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
William Lewis Marr IV is a physician assistant in Durango, Colorado
William Marr practices at CommonSpirit - Mercy Hospital in Durango, Colorado, part of CommonSpirit Health.
William Marr's NPI, 1992801179, was assigned on September 15, 2006. William Marr holds Colorado license PA.0008209.
- NPI
- 1992801179NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8325049646
- NPI enumeration date
- September 15, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (970) 247-4311
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
William Lewis Marr IV practices at CommonSpirit - Mercy Hospital in Durango, Colorado
William Marr's primary practice is CommonSpirit - Mercy Hospital, at 1010 Three Springs Blvd, Durango, CO 81301 in La Plata County. The practice phone is (970) 247-4311.
- CommonSpirit - Mercy Hospital1010 Three Springs Blvd, Durango, CO 81301 · La Plata CountyPhone(970) 247-4311
Source: Dmand AI Affiliation Data
William Lewis Marr IV is affiliated with 2 sites of care and 1 medical group
William Marr's primary practice is CommonSpirit - Mercy Hospital in Durango, Colorado, part of CommonSpirit Health. The medical group on file is CommonSpirit Primary Care Horse Gulch. Dmand AI also links William Marr to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at William Lewis Marr IV's practice
Dmand AI tracks the electronic health record (EHR) system at each site where William Marr practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| CommonSpirit - Mercy Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across CommonSpirit Health and 6.2K+ hospitals, with verified contacts in the same login.
William Lewis Marr IV is one of 1,042 physician assistants in Colorado
Medical is William Marr's primary specialty in the NPI Registry, under taxonomy code 363AM0700X. Dmand AI has William Marr's licenses on file in 2 states: Colorado and Texas.
Specialties and state licenses
- Medical physician assistant, ColoradoPrimary
- Physician assistant, Texas
Physician assistants near William Marr
Counts of physician assistants 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
William Lewis Marr IV treated 213 Medicare patients in 2024, average age 76
CMS counts 213 Medicare patients who saw William Marr in 2024. The largest group is 65 to 74, with 101 patients. 74% of them have high cholesterol, and 64% have high blood pressure. 5% are also on Medicaid. Their average risk score is 1.03, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts William Marr's median patient age at 70, with 45% women.
William Marr's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
William Marr's Medicare patients by sex, 2024
- Women10750%
- Men10650%
Chronic conditions among William Marr's Medicare patients, 2024
- High cholesterol74%
- High blood pressure64%
- Arthritis46%
- Chronic kidney disease30%
- Atrial fibrillation22%
- Ischemic heart disease22%
- Osteoporosis21%
- Mood disorders17%
Share of Medicare patients with each condition. A patient can have several.
William Marr's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women45%
- Men55%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
William Lewis Marr IV wrote 3,450 Medicare Part D claims in 2024
In 2024, William Marr wrote 3,450 Medicare Part D claims for 721 patients. 89% of them were for generic drugs.
William Marr's Part D claims by kind of drug, 2024
- Generic3,059 claims89%
- Brand-name366 claims11%
- Other25 claims1%
Drug classes CMS tracks in William Marr's Part D claims, 2024
- Opioids2%55 of 3,450 claims
- Antibiotics5%163 of 3,450 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How William Lewis Marr IV takes part in Medicare
William Marr accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
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Sources for William Lewis Marr IV'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| 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 (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) |
| 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 William Lewis Marr IV
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is William Lewis Marr IV's NPI number?
William Lewis Marr IV's NPI number is 1992801179. It was assigned on September 15, 2006, and it is active in the NPI Registry.
What does William Lewis Marr IV specialize in?
William Lewis Marr IV is a physician assistant in Durango, Colorado. The primary specialty in the NPI Registry is Medical Physician Assistant (taxonomy code 363AM0700X).
Where does William Lewis Marr IV practice?
William Marr practices at 1010 Three Springs Blvd, Durango, CO 81301. William Marr's primary practice is CommonSpirit - Mercy Hospital in Durango, Colorado, part of CommonSpirit Health. Dmand AI also links William Marr to 1 group practice or clinic.
What is William Lewis Marr IV's office phone number?
The practice phone on file for William Marr is (970) 247-4311.
What is William Lewis Marr IV's medical license number?
William Marr holds Colorado license PA.0008209, one of the licenses on file in 2 states.
Which states has William Lewis Marr IV been licensed in?
Dmand AI has state licenses on file for William Marr in Colorado and Texas.
Which hospitals is William Lewis Marr IV affiliated with?
William Marr practices at CommonSpirit - Mercy Hospital in Durango, Colorado.
What medical group is William Lewis Marr IV part of?
William Marr is linked to CommonSpirit Primary Care Horse Gulch.
Does William Lewis Marr IV accept Medicare?
Yes. CMS lists William Marr as accepting Medicare assignment.
How many Medicare patients does William Lewis Marr IV see?
CMS counts 213 Medicare patients who saw William Marr in 2024, with an average age of 76.
How long has William Lewis Marr IV been practicing?
William Marr graduated from medical school in 1996, 30 years ago.
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