Elizabeth K. Clayton, D.O.
Hospitalist Physician · Baltimore, MD
Elizabeth K. Clayton, D.O. is a hospitalist physician with a practice address in Baltimore, Maryland, and NPI 1194167734, issued on Jul 24, 2013. Check the license (Maryland H89049, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Elizabeth K. Clayton
- Credential
- D.O.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- H89049 MD
Self-reported in NPPES; status is on the state search - Practice location
- 22 S Greene St, Baltimore, MD 21201
- Phone
- (410) 328-2882
- Enumerated
- Jul 24, 2013
- Record last updated
- Jul 1, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (410) 328-2977
- Medicare enrollment
- Enrolled (PECOS I20170814000484); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 2013
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 397 in Maryland → Look up another NPI →
Also registered at 22 S Greene St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Elizabeth K. Clayton in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license H89049Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
17% more Medicare Part D claims than the average hospitalist physician in 2024
610 Medicare Part D claims for 134 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Atorvastatin Calcium30 claims
- Levothyroxine Sodium29 claims
- Trazodone Hcl27 claims
- Hydrochlorothiazide23 claims
- Entresto20 claims
- Quetiapine Fumarate20 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: $22.91
1 payment: food and beverage; the largest payer was Mirati Therapeutics, Inc. The 7,324 providers of this specialty with any payment received $494.84 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 one group practice
- Christiana Care Health Services IncNewark, DE
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Elizabeth K. Clayton among 397 hospitalist physician records in Maryland
Elizabeth K. Clayton, D.O. is one of 397 hospitalist physician records with a practice address in Maryland. 91% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 54% of them.
- NPI issued2013 · 54% of these records are older, 42% newer
- In a Medicare fileYes · 91% of these records are
- In the CMS Doctors and Clinicians fileYes · 83% of these records are
- Graduated2013 · median 2010 among the 330 with a school on file
- Record last updated2020 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in Maryland
There are 397 hospitalist physician records in Maryland.
All 397 in Maryland → Every provider in Baltimore → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- George Baffoe-Bonnie, M.D.Baltimore, MD 212011780642090
- Lei Jia Chen, MDBaltimore, MD 212011144422049
- Kimberly Clark, PA-CBaltimore, MD 212011144368226
- Philip Dittmar, MDBaltimore, MD 212011932243342
- Kathryn Eshelman, M.D.Baltimore, MD 212011558375147
- Mangla Gulati, M.D.Baltimore, MD 212011740259274
- Cheryl Hepp, MDBaltimore, MD 212011023152444
- Saverio Mirarchi, M.D.Baltimore, MD 212011639124365
Common questions
What is Elizabeth K. Clayton, D.O.'s NPI number?
Elizabeth K. Clayton, D.O.'s National Provider Identifier (NPI) is 1194167734, issued on Jul 24, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Elizabeth K. Clayton, D.O. located?
The NPPES record lists a practice address at 22 S Greene St, Baltimore, MD, 21201. Phone: (410) 328-2882. Providers update this record themselves, so call before visiting.
How can I verify Elizabeth K. Clayton, D.O.'s license?
NPPES lists Maryland license number H89049, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Elizabeth K. Clayton, D.O. prescribe under Medicare Part D?
In 2024, Elizabeth K. Clayton, D.O. had 610 Medicare Part D claims for 134 beneficiaries; the average among hospitalist physician prescribers was 521. 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.