Dr. John Thomas Ryan, MD

  • Westerville, OH
  • Family medicine physician
NPI1720037880PAC ID3375543663
Medicare services, 2024
2,108
Medicare patients, 2024
181
Part D claims, 2024
8,177
Publications
13
Hospital affiliations
4
Practice address
655 Africa Rd, Westerville, OH 43082
Practice phone
Call (614) 326-2672
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Central Ohio Primary Care Physicians

Westerville, Ohio

See all 12 affiliations

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Dr. John Thomas Ryan is a family medicine physician in Westerville, Ohio

Dr. Ryan practices at Central Ohio Primary Care Physicians in Westerville, Ohio.

Dr. Ryan's NPI, 1720037880, was assigned on May 8, 2006. Dr. Ryan graduated from Ohio State University College of Medicine in 1998. Dr. Ryan holds Ohio license 35.079529.

NPI and contact details
Medicare PAC ID
3375543663
NPI enumeration date
May 8, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(614) 326-2672
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
54
Medical school graduation
1998

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. John Thomas Ryan practices at Central Ohio Primary Care Physicians in Westerville, Ohio

Dr. Ryan's primary practice is Central Ohio Primary Care Physicians, at 655 Africa Rd, Westerville, OH 43082 in Delaware County. The practice phone is (614) 326-2672.

  • Central Ohio Primary Care Physicians
    655 Africa Rd, Westerville, OH 43082 · Delaware CountyPhone(614) 326-2672

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dr. John Thomas Ryan is affiliated with 9 sites of care and 3 medical groups

Dr. Ryan's primary practice is Central Ohio Primary Care Physicians in Westerville, Ohio. Dr. Ryan is also affiliated with Ohio State University Hospital. The medical group on file is Central Ohio Primary Care. Dmand AI also links Dr. Ryan to 3 more hospitals, 2 group practices and clinics, 2 medical groups, 1 home health agency and 1 therapy and rehab clinic, each named with a free account.

See all 12 affiliations for Dr. Ryan

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Dr. John Thomas Ryan's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ryan practices, 8 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Central Ohio Primary Care PhysiciansAvailable with a free account
+8 more sites and 2 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. John Thomas Ryan is one of 4,955 family medicine physicians in Ohio

Family medicine is Dr. Ryan's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Ryan is licensed in Ohio.

Specialties and state licenses

  • Family medicine, OhioPrimaryLicense 35.079529 · taxonomy 207Q00000X

Family medicine physicians near Dr. Ryan

Counts of family medicine physicians 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. John Thomas Ryan billed Medicare for 2,108 services in 2024

CMS data shows 2,108 Medicare services from Dr. Ryan across 31 procedure codes in 2024, for 181 Medicare patients. Medicare paid $87,866 for them. Every service was in an office.

Medicare services, 20242,108
Medicare patients181
Paid by Medicare$87,866
Procedure codes31

Dr. Ryan's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Lab and pathology
2023: 8592024: 861No change
Office and hospital visits
2023: 5112024: 513No change
Surgery
2023: 2732024: 2691%
Other services
2023: 2132024: 25821%
Tests and treatments
2023: 1072024: 19279%
Imaging
2023: 262024: 1542%

Dr. Ryan compared with the Ohio median for family medicine physicians, 2024

  • Dr. Ryan
  • Ohio median
Medicare services
2,108vs 4015.3 times
Medicare patients
181vs 15120% above
Part D claims
7,615vs 1,3235.8 times

Medians across 5,096 family medicine physicians in Ohio with Dmand AI profiles that report each measure.

Dr. Ryan'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.

See all procedures by Dr. Ryan

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. John Thomas Ryan treated 181 Medicare patients in 2024, average age 76

CMS counts 181 Medicare patients who saw Dr. Ryan in 2024. The largest group is 65 to 74, with 87 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.20, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Ryan's median patient age at 70, with 48% women.

Medicare patients, 2024181
Average age76
Average risk score1.20

Dr. Ryan's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Ryan's Medicare patients by sex, 2024

  • Women8245%
  • Men9955%

Chronic conditions among Dr. Ryan's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis38%
  4. Diabetes30%
  5. Chronic kidney disease28%
  6. Osteoporosis28%
  7. Ischemic heart disease24%
  8. Depression22%

Share of Medicare patients with each condition. A patient can have several.

Dr. Ryan'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

  • Women48%
  • Men51%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. John Thomas Ryan wrote 8,177 Medicare Part D claims in 2024

In 2024, Dr. Ryan wrote 8,177 Medicare Part D claims for 525 patients. 85% of them were for generic drugs. CMS names the drug for 7,615 of them, across 127 drugs with 11 or more claims each, at $906,740 in total drug cost. In 2023, CMS named 6,827 claims across 123 drugs.

Part D claims, 20248,177
Drugs named by CMS127
Total drug cost$906,740
Part D patients525

Dr. Ryan's Part D claims by kind of drug, 2024

  • Generic6,940 claims85%
  • Brand-name1,206 claims15%
  • Other31 claims0%

Dr. Ryan'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. Ryan's Part D claims, 2024

  • Opioids1%82 of 8,177 claims
  • Antibiotics2%188 of 8,177 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: 6,8272024: 7,61512%

Drugs named by CMS: 127 in 2024, 123 in 2023.

See all prescribing by Dr. Ryan

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. John Thomas Ryan offers telehealth to Medicare patients

Dr. Ryan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Ryan as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Removal or shaving of skin growth: 1 to 10 procedures (CMS shows small counts as a range)

Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)

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Dr. John Thomas Ryan has 13 publications on record

Dmand AI links 13 papers to Dr. Ryan, published from 2011 to 2024. 2012 was the busiest year, with 3. The most frequent topics are Radiography, Thoracic, Observer Variation and Clinical Competence. Dr. Ryan has published most often in Br J Radiol. Dr. Ryan's most frequent co-authors are Colleen M. Costelloe, MD, Nancy E. Fitzgerald, MD and Lindsay M. Liles.

Papers13
Years published2011 to 2024

Dr. Ryan's papers by year, 2011 to 2024

Topics Dr. Ryan writes about most

  • Radiography, Thoracic
  • Observer Variation
  • Clinical Competence
  • Lung Neoplasms
  • Phantoms, Imaging
  • Radiation Dosage
  • Radiographic Image Enhancement
  • Radiotherapy Dosage

Dr. Ryan's most frequent co-authors

Recent publications by Dr. Ryan

See all 13 publications and co-authors

See who Dr. Ryan researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Ryan works with, so you can find a warm path to the right family medicine physicians.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. John Thomas Ryan received $156 in industry payments from 2016 to 2024

CMS Open Payments shows 2 general payments to Dr. Ryan from 2 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 100% of the total. Stryker Corporation paid the most, $134.

General payments to Dr. Ryan by program year, 2016 to 2024

Companies that paid Dr. Ryan the most, 2016 to 2024

Share is of all general payments to this clinician.

See all payments to Dr. Ryan

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. John Thomas Ryan graduated from Ohio State University College of Medicine

Dr. Ryan graduated from Ohio State University College of Medicine in 1998.

  1. Medical schoolOhio State University College of Medicine

Source: Dmand AI Professional Profile Data

Sources for Dr. John Thomas Ryan's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. John Thomas Ryan

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. John Thomas Ryan's NPI number?

Dr. John Thomas Ryan's NPI number is 1720037880. It was assigned on May 8, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. John Thomas Ryan?

Dr. John Thomas Ryan is a family medicine physician in Westerville, Ohio. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).

Where does Dr. John Thomas Ryan practice?

Dr. Ryan practices at 655 Africa Rd, Westerville, OH 43082. Dr. Ryan's primary practice is Central Ohio Primary Care Physicians in Westerville, Ohio. Dmand AI also links Dr. Ryan to 3 hospitals, 2 group practices and clinics, 2 medical groups, 1 home health agency and 1 therapy and rehab clinic.

What is Dr. John Thomas Ryan's office phone number?

The practice phone on file for Dr. Ryan is (614) 326-2672.

What is Dr. John Thomas Ryan's medical license number?

Dr. Ryan holds Ohio license 35.079529.

Which hospitals is Dr. John Thomas Ryan affiliated with?

Dr. Ryan is affiliated with Ohio State University Hospital. Dmand AI links Dr. Ryan to 3 more hospitals.

What medical group is Dr. John Thomas Ryan part of?

Dr. Ryan is linked to Central Ohio Primary Care. Dmand AI links Dr. Ryan to 2 more medical groups.

Does Dr. John Thomas Ryan accept Medicare?

Yes. CMS data shows Dr. Ryan billed Medicare for 2,108 services in 2024, and Dr. Ryan accepts Medicare assignment.

Does Dr. John Thomas Ryan offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Ryan as offering telehealth services.

How many Medicare patients does Dr. John Thomas Ryan see?

CMS counts 181 Medicare patients who saw Dr. Ryan in 2024, with an average age of 76.

Show 7 more questionsShow fewer questions

What services does Dr. John Thomas Ryan bill to Medicare?

In 2024, Dr. Ryan's most billed Medicare services were office visit, established patient (99214), surgery: heart and blood vessels (36415) and lab and pathology test (80053).

Where did Dr. John Thomas Ryan go to medical school?

Dr. Ryan graduated from Ohio State University College of Medicine in 1998.

What drugs does Dr. John Thomas Ryan prescribe most?

In 2024 Medicare Part D data, Dr. Ryan's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Lisinopril.

Has Dr. John Thomas Ryan received payments from drug or device companies?

CMS Open Payments shows $156 in general payments to Dr. Ryan from 2 companies from 2016 to 2024. The largest total came from Stryker Corporation.

How long has Dr. John Thomas Ryan been practicing?

Dr. Ryan graduated from medical school in 1998, 28 years ago.

Does Dr. John Thomas Ryan do research?

Dmand AI links 13 publications to Dr. Ryan, published from 2011 to 2024.

Who does Dr. John Thomas Ryan publish with?

Dr. Ryan's most frequent co-authors are Colleen M. Costelloe, MD (1 shared paper), Nancy E. Fitzgerald, MD (1 shared paper) and Lindsay M. Liles (1 shared paper).

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