Mark Thomas Ash, DDS
- Part D claims, 2024
- 108
- Hospital affiliations
- 1
- Industry payments
- $134
- Medical group
- 1
- State licenses
- 2
- Practice address
- 3617 W Arrowhead Rd, Duluth, MN 55811
- Practice phone
- Call (218) 722-8377
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Northern Oral & Maxillofacial Surgeons, PA
Duluth, Minnesota
Find Mark Ash'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.
Mark Thomas Ash is an oral and maxillofacial surgery (dentist) in Duluth, Minnesota
Mark Ash practices at Northern Oral & Maxillofacial Surgeons, PA in Duluth, Minnesota.
Mark Ash's NPI, 1164045738, was assigned on May 18, 2020. Mark Ash graduated from University of Michigan School of Dentistry in 2020. Mark Ash holds Minnesota license D14360.
- NPI
- 1164045738NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1951727981
- NPI enumeration date
- May 18, 2020
- NPI status
- Active
- Practice phone
- (218) 722-8377
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Mark Thomas Ash practices at Northern Oral & Maxillofacial Surgeons, PA in Duluth, Minnesota
Mark Ash's primary practice is Northern Oral & Maxillofacial Surgeons, PA, at 3617 W Arrowhead Rd, Duluth, MN 55811 in Saint Louis County. The practice phone is (218) 722-8377.
- Northern Oral & Maxillofacial Surgeons, PA3617 W Arrowhead Rd, Duluth, MN 55811 · Saint Louis CountyPhone(218) 722-8377
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Mark Thomas Ash is affiliated with 3 sites of care and 1 medical group
Mark Ash's primary practice is Northern Oral & Maxillofacial Surgeons, PA in Duluth, Minnesota. Mark Ash is also affiliated with Essentia Health-St. Mary's Medical Center. Dmand AI also links Mark Ash to 1 more group practice or clinic and 1 medical group, 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 Mark Thomas Ash's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mark Ash practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northern Oral & Maxillofacial Surgeons, PA | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Mark Thomas Ash is one of 123 orals and maxillofacial surgery (dentist)s in Minnesota
Oral and maxillofacial surgery is Mark Ash's primary specialty in the NPI Registry, under taxonomy code 1223S0112X. Dmand AI has Mark Ash's licenses on file in 2 states: Minnesota and Wisconsin.
Specialties and state licenses
- Oral and maxillofacial surgery (dentist), MinnesotaPrimary
- Wisconsin license
Orals and maxillofacial surgery (dentist)s near Mark Ash
Counts of orals and maxillofacial surgery (dentist)s 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
Mark Thomas Ash's patients have a median age of 23
Across all payers, Dmand AI patient panel data puts Mark Ash's median patient age at 23, with 51% women.
Mark Ash's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 23
Patient panel by sex, all payers
- Women51%
- Men50%
Source: Dmand AI Patient Panel Data
Mark Thomas Ash wrote 108 Medicare Part D claims in 2024
In 2024, Mark Ash wrote 108 Medicare Part D claims for 42 patients. 96% of them were for generic drugs.
Mark Ash's Part D claims by kind of drug, 2024
- Generic104 claims96%
- Brand-name and other4 claims4%
Drug classes CMS tracks in Mark Ash's Part D claims, 2024
- Opioids19%20 of 108 claims
- Antibiotics22%24 of 108 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
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Mark Thomas Ash received $134 in industry payments in 2025
CMS Open Payments shows 1 general payment to Mark Ash from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Stryker Corporation paid the most, $134.
Companies that paid Mark Ash the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Mark Thomas Ash graduated from University of Michigan School of Dentistry
Mark Ash graduated from University of Michigan School of Dentistry in 2020.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Mark Thomas Ash'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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | 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 Mark Thomas Ash
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Mark Thomas Ash's NPI number?
Mark Thomas Ash's NPI number is 1164045738. It was assigned on May 18, 2020, and it is active in the NPI Registry.
What does Mark Thomas Ash specialize in?
Mark Thomas Ash is an oral and maxillofacial surgery (dentist) in Duluth, Minnesota. The primary specialty in the NPI Registry is Oral and Maxillofacial Surgery (Dentist) (taxonomy code 1223S0112X).
Where does Mark Thomas Ash practice?
Mark Ash practices at 3617 W Arrowhead Rd, Duluth, MN 55811. Mark Ash's primary practice is Northern Oral & Maxillofacial Surgeons, PA in Duluth, Minnesota. Dmand AI also links Mark Ash to 1 group practice or clinic and 1 medical group.
What is Mark Thomas Ash's office phone number?
The practice phone on file for Mark Ash is (218) 722-8377.
What is Mark Thomas Ash's medical license number?
Mark Ash holds Minnesota license D14360, one of the licenses on file in 2 states.
Which states has Mark Thomas Ash been licensed in?
Dmand AI has state licenses on file for Mark Ash in Minnesota and Wisconsin.
Which hospitals is Mark Thomas Ash affiliated with?
Mark Ash is affiliated with Essentia Health-St. Mary's Medical Center.
Where did Mark Thomas Ash go to medical school?
Mark Ash graduated from University of Michigan School of Dentistry in 2020.
Has Mark Thomas Ash received payments from drug or device companies?
CMS Open Payments shows $134 in general payments to Mark Ash from 1 company from 2025 to 2025. The largest total came from Stryker Corporation.
How long has Mark Thomas Ash been practicing?
Mark Ash graduated from medical school in 2020, 6 years ago.
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