Mary Katherine Elfrey, DO
Cardiovascular Disease Physician · Baltimore, MD
Mary Katherine Elfrey, DO is a cardiovascular disease physician with a practice address in Baltimore, Maryland, and NPI 1760645519, issued on Jul 2, 2008. Check the license (Maryland H0078507, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Mary Katherine Elfrey
- Credential
- DO
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- H0078507 MD
Self-reported in NPPES; status is on the state search - Practice location
- 3407 Wilkens Ave Ste 300, Baltimore, MD 21229
- Phone
- (410) 644-5111
- Enumerated
- Jul 2, 2008
- Record last updated
- Apr 25, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (410) 644-2715
- Medicare enrollment
- Enrolled (PECOS I20141120002377); accepts Medicare assignment
- Medical or professional school
- New York College Of Osteo Medicine Of New York Institute Of Technology, 2008
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 613 in Maryland → Look up another NPI →
Also registered at 3407 Wilkens Ave Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Muhammad Amer, MD, MHSClinical Cardiac Electrophysiology Physician1972549814
- Aishah Aslam, DOCardiovascular Disease Physician1518305671
- Julia Berlin, CRNPFamily Nurse Practitioner1548712748
- Manjari Regmi, MDCardiovascular Disease Physician1235623687
- Hakim Uqdah, D.O, PHARMD,Cardiovascular Disease Physician1750697892
- Michelle Verceles, CRNPAcute Care Nurse Practitioner1255507000
Verify Mary Katherine Elfrey in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license H0078507Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
13% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
2,693 Medicare Part D claims for 519 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.
Most prescribed
- Metoprolol Succinate299 claims
- Atorvastatin Calcium218 claims
- Losartan Potassium215 claims
- Eliquis206 claims
- Amlodipine Besylate159 claims
- Rosuvastatin Calcium137 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: $1,040.62
50 payments; by number, the most common kind was food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 16,686 providers of this specialty with any payment received $3,819.56 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
- St Paul Place Specialists, Inc.Baltimore, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Katherine Elfrey among 613 cardiovascular disease physician records in Maryland
Mary Katherine Elfrey, DO is one of 613 cardiovascular disease physician records with a practice address in Maryland. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 73% of them.
- NPI issued2008 · 73% of these records are older, 23% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2008 · median 1997 among the 389 with a school on file
- Record last updated2018 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in Maryland
There are 613 cardiovascular disease physician records in Maryland.
All 613 in Maryland → Every provider in Baltimore → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Aishah Aslam, DOBaltimore, MD 212291518305671
- Jeffrey Cole, M.D.Baltimore, MD 212291548263908
- Jesse DoranBaltimore, MD 212291538587704
- Carlos Ince, M.D.Baltimore, MD 212291356344667
- Frederick Kuhn, M.D.Baltimore, MD 212291245233535
- Stephen Plantholt, M.D.Baltimore, MD 212291265426274
- Richard PomerantzBaltimore, MD 212291699717470
- Manjari Regmi, MDBaltimore, MD 212291235623687
Common questions
What is Mary Katherine Elfrey, DO's NPI number?
Mary Katherine Elfrey, DO's National Provider Identifier (NPI) is 1760645519, issued on Jul 2, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Mary Katherine Elfrey, DO located?
The NPPES record lists a practice address at 3407 Wilkens Ave Ste 300, Baltimore, MD, 21229. Phone: (410) 644-5111. Providers update this record themselves, so call before visiting.
How can I verify Mary Katherine Elfrey, DO's license?
NPPES lists Maryland license number H0078507, 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 Mary Katherine Elfrey, DO prescribe under Medicare Part D?
In 2024, Mary Katherine Elfrey, DO had 2,693 Medicare Part D claims for 519 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. 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.