DepressionEducation, Medical, GraduateHealth Promotion
Dr. Ryan Christopher Mast, DO
NPI1376714675
- Part D claims, 2024
- 20
- Publications
- 2
- Industry payments
- $41
- Affiliated sites
- 1
- Medical groups
- 4
- Practice address
- 6300 North Main Street, Dayton, OH 45415
- Practice phone
- Call (937) 275-1500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mahajan Therapeutics - Dayton Mental Health
Outpatient Mental Health Clinic · Dayton, Ohio
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Dr. Ryan Christopher Mast is a psychiatrist in Dayton, Ohio
Dr. Mast practices at Mahajan Therapeutics - Dayton Mental Health in Dayton, Ohio.
Dr. Mast's NPI, 1376714675, was assigned on March 14, 2008. Dr. Mast graduated from Ohio University, College of Osteopathic Medicine in 2007. Dr. Mast holds Ohio license 154535.
NPI and contact details
- NPI
- 1376714675NPI Registry (opens in a new tab)
- NPI enumeration date
- March 14, 2008
- NPI status
- Active
- Practice phone
- (937) 275-1500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Ryan Christopher Mast practices at Mahajan Therapeutics - Dayton Mental Health in Dayton, Ohio
Dr. Mast's primary practice is Mahajan Therapeutics - Dayton Mental Health, at 6300 North Main Street, Dayton, OH 45415. The practice phone is (937) 275-1500.
- Mahajan Therapeutics - Dayton Mental Health6300 North Main Street, Dayton, OH 45415Phone(937) 275-1500
Source: Dmand AI Affiliation Data
Dr. Ryan Christopher Mast is affiliated with 1 site of care and 4 medical groups
Dr. Mast's primary practice is Mahajan Therapeutics - Dayton Mental Health in Dayton, Ohio. The medical group on file is Mahajan Therapeutics. Dmand AI also links Dr. Mast to 3 more medical groups, each named with a free account. Dr. Mast's employer is on file too: a behavioral health center.
Mahajan Therapeutics - Dayton Mental HealthPrimary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ryan Christopher Mast's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mast practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mahajan Therapeutics - Dayton Mental Health | Available with a free account |
| +3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ryan Christopher Mast is one of 1,227 psychiatrists in Ohio
Psychiatry is Dr. Mast's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Mast is licensed in Ohio.
Specialties and state licenses
- Psychiatry, OhioPrimary
Psychiatrists near Dr. Mast
Counts of psychiatrists 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. Ryan Christopher Mast's patients have a median age of 13
Across all payers, Dmand AI patient panel data puts Dr. Mast's median patient age at 13, with 100% women.
Dr. Mast's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 13
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Ryan Christopher Mast wrote 20 Medicare Part D claims in 2024
In 2024, Dr. Mast wrote 20 Medicare Part D claims. 100% of them were for generic drugs. They cover 3 drugs, with $584 in total drug cost. In 2022, CMS named 490 claims across 20 drugs.
Part D claims, 202420
Drugs named by CMS3
Total drug cost$584
Dr. Mast's most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 4902023: 5888%
Drugs named by CMS: 3 in 2023, 20 in 2022.
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. Ryan Christopher Mast has 2 publications on record
Dmand AI links 2 papers to Dr. Mast, published from 2017 to 2019. The most frequent topics are Health Services Accessibility, Ohio and Psychiatry. Dr. Mast's most frequent co-authors are Cathleen Anne Cerny-Suelzer, MD, Allison Elaine Cowan, MD and Julie Patrice Gentile, MD.
Papers2
Years published2017 to 2019
Topics Dr. Mast writes about most
- Health Services Accessibility
- Ohio
- Psychiatry
Dr. Mast's most frequent co-authors
- Cathleen Anne Cerny-Suelzer, MD1 shared paper
- Allison Elaine Cowan, MD1 shared paper
- Julie Patrice Gentile, MD1 shared paper
Recent publications by Dr. Mast
Ambulatory CareCost-Benefit AnalysisHealth Services Accessibility
See who Dr. Mast researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Mast works with, so you can find a warm path to the right psychiatrists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ryan Christopher Mast received $41 in industry payments from 2020 to 2023
CMS Open Payments shows 2 general payments to Dr. Mast from 2 drug and device companies from 2020 to 2023. Food and beverage make up the largest share, 100% of the total. Otsuka America Pharmaceutical, Inc. paid the most, $22.
General payments to Dr. Mast by program year, 2020 to 2023
Companies that paid Dr. Mast the most, 2020 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ryan Christopher Mast graduated from Ohio University, College of Osteopathic Medicine
Dr. Mast graduated from Ohio University, College of Osteopathic Medicine in 2007.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Ryan Christopher Mast'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 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Ryan Christopher Mast
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. Ryan Christopher Mast's NPI number?
Dr. Ryan Christopher Mast's NPI number is 1376714675. It was assigned on March 14, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Ryan Christopher Mast?
Dr. Ryan Christopher Mast is a psychiatrist in Dayton, Ohio. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Ryan Christopher Mast practice?
Dr. Mast practices at 6300 North Main Street, Dayton, OH 45415. Dr. Mast's primary practice is Mahajan Therapeutics - Dayton Mental Health in Dayton, Ohio. Dmand AI also links Dr. Mast to 3 medical groups.
What is Dr. Ryan Christopher Mast's office phone number?
The practice phone on file for Dr. Mast is (937) 275-1500.
What is Dr. Ryan Christopher Mast's medical license number?
Dr. Mast holds Ohio license 154535.
What medical group is Dr. Ryan Christopher Mast part of?
Dr. Mast is linked to Mahajan Therapeutics. Dmand AI links Dr. Mast to 3 more medical groups.
Where did Dr. Ryan Christopher Mast go to medical school?
Dr. Mast graduated from Ohio University, College of Osteopathic Medicine in 2007.
What drugs does Dr. Ryan Christopher Mast prescribe most?
In 2023 Medicare Part D data, Dr. Mast's most prescribed drugs by claims were Quetiapine Fumarate, Clonidine HCl and Fluoxetine HCl.
Has Dr. Ryan Christopher Mast received payments from drug or device companies?
CMS Open Payments shows $41 in general payments to Dr. Mast from 2 companies from 2020 to 2023. The largest total came from Otsuka America Pharmaceutical, Inc.
How long has Dr. Ryan Christopher Mast been practicing?
Dr. Mast graduated from medical school in 2007, 19 years ago.
Does Dr. Ryan Christopher Mast do research?
Dmand AI links 2 publications to Dr. Mast, published from 2017 to 2019.
Who does Dr. Ryan Christopher Mast publish with?
Dr. Mast's most frequent co-authors are Cathleen Anne Cerny-Suelzer, MD (1 shared paper), Allison Elaine Cowan, MD (1 shared paper) and Julie Patrice Gentile, MD (1 shared paper).
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