Dr. Ryan Christian Guillory, DO
- Medicare services, 2024
- 741
- Medicare patients, 2024
- 293
- Part D claims, 2024
- 698
- MIPS score, 2024
- 77
- Hospital affiliations
- 4
- Practice address
- 401 North Ewing Street, Lancaster, OH 43130
- Practice phone
- Call (740) 687-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Ryan Christian Guillory is an internist in Lancaster, Ohio
Dr. Guillory practices at Fairfield Medical Center in Lancaster, Ohio, part of Adena Occupational Health.
Dr. Guillory's NPI, 1083153423, was assigned on February 17, 2017. Dr. Guillory graduated from William Carey University College of Osteopathic Medicine in 2017. Dr. Guillory holds Ohio license 34.014146.
- NPI
- 1083153423NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5092084087
- NPI enumeration date
- February 17, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (740) 687-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ryan Christian Guillory practices at Fairfield Medical Center in Lancaster, Ohio
Dr. Guillory's primary practice is Fairfield Medical Center, at 401 North Ewing Street, Lancaster, OH 43130 in Fairfield County. The practice phone is (740) 687-8000.
- Fairfield Medical Center401 North Ewing Street, Lancaster, OH 43130 · Fairfield CountyPhone(740) 687-8000
Source: Dmand AI Affiliation Data
Dr. Ryan Christian Guillory is affiliated with 4 sites of care and 3 medical groups
Dr. Guillory's primary practice is Fairfield Medical Center in Lancaster, Ohio, part of Adena Occupational Health. Dr. Guillory is also affiliated with Genesis Hospital. The medical group on file is Fairfield Healthcare Professionals. Dmand AI also links Dr. Guillory to 2 more hospitals and 2 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 Dr. Ryan Christian Guillory's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Guillory practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Fairfield Medical Center | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ryan Christian Guillory is one of 4,708 internists in Ohio
Internal medicine is Dr. Guillory's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Guillory is licensed in Ohio.
Specialties and state licenses
- Internal medicine, OhioPrimary
Internists near Dr. Guillory
Counts of internists 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 Christian Guillory billed Medicare for 741 services in 2024
CMS data shows 741 Medicare services from Dr. Guillory across 8 procedure codes in 2024, for 293 Medicare patients. Medicare paid $61,949 for them.
Dr. Guillory's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 7512024: 7283%
- Other services
- 2023: 02024: 13
Where Dr. Guillory's Medicare services took place, 2024
- In an office598%
- In a facility68292%
Dr. Guillory compared with the Ohio median for internists, 2024
- Dr. Guillory
- Ohio median
- Medicare services
- 741vs 48752% above
- Medicare patients
- 293vs 19253% above
- Part D claims
- 403vs 29437% above
Medians across 4,703 internists in Ohio with Dmand AI profiles that report each measure.
Dr. Guillory's most billed Medicare procedure codes, 2024
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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Guillory and other internists in Ohio.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ryan Christian Guillory treated 293 Medicare patients in 2024, average age 73
CMS counts 293 Medicare patients who saw Dr. Guillory in 2024. The largest group is 65 to 74, with 85 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 35% are also on Medicaid. Their average risk score is 2.23, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Guillory's median patient age at 72, with 53% women.
Dr. Guillory's Medicare patients by age, 2024
Dr. Guillory's Medicare patients by sex, 2024
- Women14449%
- Men14951%
Chronic conditions among Dr. Guillory's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis54%
- Ischemic heart disease51%
- Diabetes47%
- Chronic kidney disease46%
- Depression44%
- Mood disorders44%
Share of Medicare patients with each condition. A patient can have several.
Dr. Guillory's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women53%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ryan Christian Guillory wrote 698 Medicare Part D claims in 2024
In 2024, Dr. Guillory wrote 698 Medicare Part D claims for 260 patients. 89% of them were for generic drugs. CMS names the drug for 403 of them, across 23 drugs with 11 or more claims each, at $10,700 in total drug cost. In 2023, CMS named 388 claims across 19 drugs.
Dr. Guillory's Part D claims by kind of drug, 2024
- Generic624 claims89%
- Brand-name and other74 claims11%
Dr. Guillory'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. Guillory's Part D claims, 2024
- Opioids7%46 of 698 claims
- Antibiotics19%133 of 698 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: 3882024: 4034%
Drugs named by CMS: 23 in 2024, 19 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
Dr. Ryan Christian Guillory scored 77 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 77 out of 100 for Dr. Guillory for performance year 2024, reported as part of a group. Dr. Guillory accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Guillory's MIPS scores, performance year 2024
- 77of 100Final score
- 43.4of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 77of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Ryan Christian Guillory received $230 in industry payments from 2018 to 2025
CMS Open Payments shows 14 general payments to Dr. Guillory from 11 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $45.
General payments to Dr. Guillory by program year, 2018 to 2025
Companies that paid Dr. Guillory the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ryan Christian Guillory graduated from William Carey University College of Osteopathic Medicine
Dr. Guillory graduated from William Carey University College of Osteopathic Medicine in 2017.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Ryan Christian Guillory'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 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (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. Ryan Christian Guillory
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 Christian Guillory's NPI number?
Dr. Ryan Christian Guillory's NPI number is 1083153423. It was assigned on February 17, 2017, and it is active in the NPI Registry.
What kind of doctor is Dr. Ryan Christian Guillory?
Dr. Ryan Christian Guillory is an internist in Lancaster, Ohio. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Ryan Christian Guillory practice?
Dr. Guillory practices at 401 North Ewing Street, Lancaster, OH 43130. Dr. Guillory's primary practice is Fairfield Medical Center in Lancaster, Ohio, part of Adena Occupational Health. Dmand AI also links Dr. Guillory to 2 hospitals and 2 medical groups.
What is Dr. Ryan Christian Guillory's office phone number?
The practice phone on file for Dr. Guillory is (740) 687-8000.
What is Dr. Ryan Christian Guillory's medical license number?
Dr. Guillory holds Ohio license 34.014146.
Which hospitals is Dr. Ryan Christian Guillory affiliated with?
Dr. Guillory practices at Fairfield Medical Center in Lancaster, Ohio. Dr. Guillory is also affiliated with Genesis Hospital. Dmand AI links Dr. Guillory to 2 more hospitals.
What medical group is Dr. Ryan Christian Guillory part of?
Dr. Guillory is linked to Fairfield Healthcare Professionals. Dmand AI links Dr. Guillory to 2 more medical groups.
Does Dr. Ryan Christian Guillory accept Medicare?
Yes. CMS data shows Dr. Guillory billed Medicare for 741 services in 2024, and Dr. Guillory accepts Medicare assignment.
What is Dr. Ryan Christian Guillory's MIPS score?
Dr. Guillory's MIPS final score for performance year 2024 is 77 out of 100, reported as part of a group.
How many Medicare patients does Dr. Ryan Christian Guillory see?
CMS counts 293 Medicare patients who saw Dr. Guillory in 2024, with an average age of 73.
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What services does Dr. Ryan Christian Guillory bill to Medicare?
In 2024, Dr. Guillory's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99233) and hospital inpatient care (99239).
Where did Dr. Ryan Christian Guillory go to medical school?
Dr. Guillory graduated from William Carey University College of Osteopathic Medicine in 2017.
What drugs does Dr. Ryan Christian Guillory prescribe most?
In 2024 Medicare Part D data, Dr. Guillory's most prescribed drugs by claims were Metoprolol Succinate, Pantoprazole Sodium and Furosemide.
Has Dr. Ryan Christian Guillory received payments from drug or device companies?
CMS Open Payments shows $230 in general payments to Dr. Guillory from 11 companies from 2018 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Ryan Christian Guillory been practicing?
Dr. Guillory graduated from medical school in 2017, 9 years ago.
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