Mark J. Buettner, PA-C
- Medicare patients, 2024
- 621
- Part D claims, 2024
- 1,808
- Hospital affiliations
- 3
- Industry payments
- $193
- Medical groups
- 4
- Practice address
- 730 West Market Street, Lima, OH 45801
- Practice phone
- Call (419) 227-3361
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Mark Buettner'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 J. Buettner is a physician assistant in Lima, Ohio
Mark Buettner practices at Mercy Health - St. Rita's Medical Center in Lima, Ohio, part of Bon Secours Mercy Health.
Mark Buettner's NPI, 1821087826, was assigned on October 21, 2005. Mark Buettner holds Ohio license 50.001182.
- NPI
- 1821087826NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6709869811
- NPI enumeration date
- October 21, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (419) 227-3361
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Mark J. Buettner practices at Mercy Health - St. Rita's Medical Center in Lima, Ohio
Mark Buettner's primary practice is Mercy Health - St. Rita's Medical Center, at 730 West Market Street, Lima, OH 45801 in Allen County. The practice phone is (419) 227-3361.
- Mercy Health - St. Rita's Medical Center730 West Market Street, Lima, OH 45801 · Allen CountyPhone(419) 227-3361
Source: Dmand AI Affiliation Data
Mark J. Buettner is affiliated with 3 sites of care and 4 medical groups
Mark Buettner's primary practice is Mercy Health - St. Rita's Medical Center in Lima, Ohio, part of Bon Secours Mercy Health. Mark Buettner is also affiliated with Kindred Hospital Lima. The medical group on file is Mercy Health Physicians. Dmand AI also links Mark Buettner to 1 more hospital and 3 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Mark J. Buettner's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mark Buettner practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mercy Health - St. Rita's Medical Center | Available with a free account |
| +2 more sites and 3 medical groups | 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 Bon Secours Mercy Health and 6.2K+ hospitals, with verified contacts in the same login.
Mark J. Buettner is one of 4,524 physician assistants in Ohio
Physician assistant is Mark Buettner's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Mark Buettner is licensed in Ohio.
Specialties and state licenses
- Physician assistant, OhioPrimary
Physician assistants near Mark Buettner
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
Mark J. Buettner treated 621 Medicare patients in 2024, average age 76
CMS counts 621 Medicare patients who saw Mark Buettner in 2024. The largest group is 75 to 84, with 259 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 9% are also on Medicaid. Their average risk score is 1.54, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Mark Buettner's median patient age at 74, with 45% women.
Mark Buettner's Medicare patients by age, 2024
Mark Buettner's Medicare patients by sex, 2024
- Women29748%
- Men32452%
Chronic conditions among Mark Buettner's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease73%
- Arthritis56%
- Heart failure53%
- Atrial fibrillation48%
- Diabetes48%
- Chronic kidney disease41%
Share of Medicare patients with each condition. A patient can have several.
Mark Buettner's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women45%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Mark J. Buettner wrote 1,808 Medicare Part D claims in 2024
In 2024, Mark Buettner wrote 1,808 Medicare Part D claims for 642 patients. 83% of them were for generic drugs.
Mark Buettner's Part D claims by kind of drug, 2024
- Generic1,507 claims83%
- Brand-name301 claims17%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Mark J. Buettner takes part in Medicare
Mark Buettner 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
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Mark J. Buettner received $193 in industry payments in 2025
CMS Open Payments shows 9 general payments to Mark Buettner from 4 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) paid the most, $98.
Companies that paid Mark Buettner the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Mark J. Buettner'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) |
| Industry payments | Open Payments (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 Mark J. Buettner
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 J. Buettner's NPI number?
Mark J. Buettner's NPI number is 1821087826. It was assigned on October 21, 2005, and it is active in the NPI Registry.
What does Mark J. Buettner specialize in?
Mark J. Buettner is a physician assistant in Lima, Ohio. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Mark J. Buettner practice?
Mark Buettner practices at 730 West Market Street, Lima, OH 45801. Mark Buettner's primary practice is Mercy Health - St. Rita's Medical Center in Lima, Ohio, part of Bon Secours Mercy Health. Dmand AI also links Mark Buettner to 1 hospital and 3 medical groups.
What is Mark J. Buettner's office phone number?
The practice phone on file for Mark Buettner is (419) 227-3361.
What is Mark J. Buettner's medical license number?
Mark Buettner holds Ohio license 50.001182.
Which hospitals is Mark J. Buettner affiliated with?
Mark Buettner practices at Mercy Health - St. Rita's Medical Center in Lima, Ohio. Mark Buettner is also affiliated with Kindred Hospital Lima. Dmand AI links Mark Buettner to 1 more hospital.
What medical group is Mark J. Buettner part of?
Mark Buettner is linked to Mercy Health Physicians. Dmand AI links Mark Buettner to 3 more medical groups.
Does Mark J. Buettner accept Medicare?
Yes. CMS lists Mark Buettner as accepting Medicare assignment.
How many Medicare patients does Mark J. Buettner see?
CMS counts 621 Medicare patients who saw Mark Buettner in 2024, with an average age of 76.
Has Mark J. Buettner received payments from drug or device companies?
CMS Open Payments shows $193 in general payments to Mark Buettner from 4 companies from 2025 to 2025. The largest total came from ZOLL Services LLC (A/K/A ZOLL LifeCor Corp).
How long has Mark J. Buettner been practicing?
Mark Buettner graduated from medical school in 2009, 17 years ago.
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