DR. WILLARD NATHAN APPLEFELD M.D.
NPI 1992190045
Internal Medicine - Critical Care Medicine in Baltimore, MD
About Dr. Willard Nathan Applefeld M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLARD NATHAN APPLEFELD M.D. (NPI 1992190045) is an individual critical care medicine provider in Baltimore, Maryland, licensed in Maryland (D0088336) and active in the NPI registry since April 2015. He is enrolled in Medicare PECOS, is affiliated with Duke University Hospital, and is a graduate of University Of Maryland School Of Medicine (2015).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Willard Nathan Applefeld M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Willard Applefeld reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Hagerstown, MD 21742
- Reassigned Medicare billing, Maryland enrollment
- 30 clinicians in this Medicare group
Durham, NC 27704
- Reassigned Medicare billing, North Carolina enrollment
- 3,671 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Duke University Hospital
Acute Care Hospitals · Durham, NCDuke Regional Hospital
Acute Care Hospitals · Durham, NCPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21287 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BALTIMORE, MD 21287
BALTIMORE, MD 21287
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Willard Applefeld's NPI number?
The NPI number for Willard Applefeld is 1992190045. It was assigned to this individual provider in the NPPES registry on April 4, 2015.
Where is Willard Applefeld located?
Willard Applefeld practices at 1800 Orleans St The Johns Hopkins Hospital, Baltimore, MD 21287. The listed phone number is (410) 955-7911.
What is Willard Applefeld's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is Willard Applefeld enrolled in Medicare?
Yes. Willard Applefeld is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Willard Applefeld's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Willard Applefeld reassigns Medicare benefits to 2 organizations: Anacostia Medical Associates (Hagerstown, MD) and Duke Health Integrated Practice, Inc (Durham, NC). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Willard Applefeld's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Willard Applefeld accept?
Health plans from Ambetter Health, Ambetter from Absolute Total Care, Ambetter of North Carolina, Ambetter of Tennessee and Cigna Healthcare list Willard Applefeld as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Willard Applefeld affiliated with any hospitals?
According to CMS data, Willard Applefeld is affiliated with Duke University Hospital and Duke Regional Hospital.
When was this NPI record last updated?
The NPPES record for Willard Applefeld was last updated on April 27, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Willard Nathan Applefeld, M.D. · NPI 1992190045
Critical Care Medicine physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since April 4, 2015.
## Identity
- **NPI:** 1992190045 (Entity type: Individual)
- **Enumerated:** April 4, 2015
- **Primary specialty:** Internal Medicine - Critical Care Medicine · taxonomy 207RC0200X
- **State license:** D0088336 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 1800 ORLEANS ST, THE JOHNS HOPKINS HOSPITAL, Baltimore, MD 21287-0010
- **Phone:** (410) 955-7911 · **Fax:** (410) 955-0374
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Anacostia Medical Associates (NPI 1376973362, Hagerstown, MD); Duke Health Integrated Practice, Inc (NPI 1518725936, Durham, NC) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Maryland School Of Medicine, class of 2015
## Record status
- **NPPES last updated:** April 27, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1992190045) · Data from the CMS NPPES public registry.