Willard Nathan Applefeld, M.D.
Critical Care Medicine (Internal Medicine) Physician · Baltimore, MD
Willard Nathan Applefeld, M.D. is a critical care medicine (internal medicine) physician with a practice address in Baltimore, Maryland, and NPI 1992190045, issued on Apr 4, 2015. Check the license (Maryland D0088336, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Willard Nathan Applefeld
- Credential
- M.D.
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License number
- D0088336 MD
Self-reported in NPPES; status is on the state search - Practice location
- 1800 Orleans St, Baltimore, MD 21287
- Phone
- (410) 955-7911
- Enumerated
- Apr 4, 2015
- Record last updated
- Apr 27, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (410) 955-0374
- Medicare enrollment
- Enrolled (PECOS I20240923002901); accepts Medicare assignment
- Medical or professional school
- University Of Maryland School Of Medicine, 2015
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 212 in Maryland → Look up another NPI →
Also registered at 1800 Orleans St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kara AbarcarEmergency Medicine Physician1285195123
- Catherine Abbot, CRNPStudent in an Organized Health Care Education/Training Program1942093810
- Ahamed Akmal Abdul Rahman Lebbe, MDStudent in an Organized Health Care Education/Training Program1255208427
- Arielle AbovichStudent in an Organized Health Care Education/Training Program1972122703
- Luis Acosta, MDStudent in an Organized Health Care Education/Training Program1922859537
- Nihmotallahi Adebayo, MDStudent in an Organized Health Care Education/Training Program1033058334
Verify Willard Nathan Applefeld in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0088336Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% fewer Medicare Part D claims than the average critical care medicine (internal medicine) physician in 2024
182 Medicare Part D claims for 49 beneficiaries, against an average of 696 among the 2,873 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims.
Most prescribed
- Ezetimibe20 claims
- Spironolactone16 claims
- Jardiance14 claims
- Atorvastatin Calcium12 claims
- Carvedilol12 claims
- Rosuvastatin Calcium11 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: $424.61
5 payments; by number, the most common kind was food and beverage; the largest payer was Abbott Laboratories. The 2,708 providers of this specialty with any payment received $2,958.68 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
- Duke Health Integrated Practice IncMorrisville, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Willard Nathan Applefeld among 212 critical care medicine (internal medicine) physician records in Maryland
Willard Nathan Applefeld, M.D. is one of 212 critical care medicine (internal medicine) physician records with a practice address in Maryland. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 75% of them.
- NPI issued2015 · 75% of these records are older, 19% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 79% of these records are
- Graduated2015 · median 2005 among the 168 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 207RC0200X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in Maryland
There are 212 critical care medicine (internal medicine) physician records in Maryland.
All 212 in Maryland → Every provider in Baltimore → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Jordan AssadiBaltimore, MD 212871912332008
- Divyansh Bajaj, MDBaltimore, MD 212871770005399
- John Brems, MDBaltimore, MD 212871376040519
- Kori Calhoun, DNPBaltimore, MD 212871104703875
- Mary Elizabeth Card, MDBaltimore, MD 212871487034906
- Steven Keller, MD, PHDBaltimore, MD 212871720279847
- Umar Khan, MDBaltimore, MD 212871487688271
- Neal Klauer, MDBaltimore, MD 212871386173516
Common questions
What is Willard Nathan Applefeld, M.D.'s NPI number?
Willard Nathan Applefeld, M.D.'s National Provider Identifier (NPI) is 1992190045, issued on Apr 4, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Willard Nathan Applefeld, M.D. located?
The NPPES record lists a practice address at 1800 Orleans St, Baltimore, MD, 21287. Phone: (410) 955-7911. Providers update this record themselves, so call before visiting.
How can I verify Willard Nathan Applefeld, M.D.'s license?
NPPES lists Maryland license number D0088336, 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 Willard Nathan Applefeld, M.D. prescribe under Medicare Part D?
In 2024, Willard Nathan Applefeld, M.D. had 182 Medicare Part D claims for 49 beneficiaries; the average among critical care medicine (internal medicine) physician prescribers was 696. 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.