Katherine Keegan Johnson, M.D.
Family Medicine Physician · Montgomery, OH
Katherine Keegan Johnson, M.D. is a family medicine physician with a practice address in Montgomery, Ohio, and NPI 1144648874, issued on Mar 31, 2014. Check the license (Ohio 35.128428, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Katherine Keegan Johnson
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 35.128428 OH
Self-reported in NPPES; status is on the state search - Practice location
- 11140 Montgomery RD Ste 2500, Montgomery, OH 45249
- Phone
- (513) 561-7809
- Enumerated
- Mar 31, 2014
- Record last updated
- Oct 30, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (513) 272-4121
- Medicare enrollment
- Enrolled (PECOS I20170816002779); accepts Medicare assignment
- Medical or professional school
- University Of Cincinnati College Of Medicine, 2014
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 5,606 in Ohio → Look up another NPI →
Also registered at 11140 Montgomery RD Ste 2500
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jennifer Fenwick, APRNFamily Nurse Practitioner1679124820
- Brennan Lawall, MDFamily Medicine Physician1801230982
- Margaret Moon, M.D.Family Medicine Physician1649622366
- Jennifer Woodward, DOFamily Medicine Physician1225266844
Verify Katherine Keegan Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35.128428Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
11% fewer Medicare Part D claims than the average family medicine physician in 2024
3,169 Medicare Part D claims for 321 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Atorvastatin Calcium326 claims
- Levothyroxine Sodium159 claims
- Lisinopril147 claims
- Amlodipine Besylate144 claims
- Omeprazole114 claims
- Losartan Potassium100 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $14.28
1 payment: food and beverage; the largest payer was Pulmonx Corporation. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Oxford Physical Therapy And RehabilitationMason, OH
- The Christ Hospital Medical Associates, LLCCincinnati, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Keegan Johnson among 5,606 family medicine physician records in Ohio
Katherine Keegan Johnson, M.D. is one of 5,606 family medicine physician records with a practice address in Ohio. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 74% of them.
- NPI issued2014 · 74% of these records are older, 24% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2014 · median 2005 among the 3,510 with a school on file
- Record last updated2020 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
7 family medicine physician records list a practice address in Montgomery
They are 7 of the 457 NPPES records with a practice address in Montgomery, and 5,606 family medicine physician records in Ohio.
All 5,606 in Ohio → Every provider in Montgomery → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Jay Bernstein, MDCincinnati, OH 452491093791212
- Mauricio Caceres, M.D.Cincinnati, OH 452491538151642
- Thomas Grimm, M.D.Cincinnati, OH 452491659363687
- Sarah Kindt, DOCincinnati, OH 452491992909980
- Brennan Lawall, MDMontgomery, OH 452491801230982
- Andrea Melton, M.D.Montgomery, OH 452491306164553
- Jeffrey Merling, M.D.Cincinnati, OH 452491366434391
- Douglas Moody, M.D.Cincinnati, OH 452491427040450
Common questions
What is Katherine Keegan Johnson, M.D.'s NPI number?
Katherine Keegan Johnson, M.D.'s National Provider Identifier (NPI) is 1144648874, issued on Mar 31, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Keegan Johnson, M.D. located?
The NPPES record lists a practice address at 11140 Montgomery RD Ste 2500, Montgomery, OH, 45249. Phone: (513) 561-7809. Providers update this record themselves, so call before visiting.
How can I verify Katherine Keegan Johnson, M.D.'s license?
NPPES lists Ohio license number 35.128428, as entered by the provider. Search the State Medical Board of Ohio at https://elicense.ohio.gov/oh_verifylicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Katherine Keegan Johnson, M.D. prescribe under Medicare Part D?
In 2024, Katherine Keegan Johnson, M.D. had 3,169 Medicare Part D claims for 321 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.